Choanoflagellates from the subarctic North Pacific Ocean, with descriptions of two new species

1990 ◽  
Vol 68 (11) ◽  
pp. 2393-2402 ◽  
Author(s):  
Beatrice C. Booth
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
North Pacific ◽  
North Pacific Ocean ◽  
Euphotic Zone ◽  
Free Living ◽  
Closely Related Species ◽  
Subarctic North Pacific ◽  
Two New Species ◽  
Subarctic Pacific Ocean

Samples collected over a period of 10 years throughout the euphotic zone of the eastern subarctic Pacific Ocean were analyzed for choanoflagellates; of the 28 species observed, 6 were most abundant. Two new species (Parvicorbicula superpositus and Pleurasiga tricaudata) are described; four other taxa displayed major differences from the most closely related species. All species were found throughout the water column and all specimens were free-living; none were attached to other particles. No endemic species were found.

Two new species of Geodiidae (Porifera, Demospongiae, Astrophorina) from the Emperor Seamounts, North Pacific Ocean

Zootaxa ◽  
2019 ◽  
Vol 4671 (3) ◽  
pp. 381-395 ◽  
Author(s):  
HELMUT LEHNERT ◽  
ROBERT P. STONE
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
North Pacific ◽  
North Pacific Ocean ◽  
Sponge Species ◽  
Two New Species ◽  
Emperor Seamounts ◽  
First Descriptions

Two new species of Geodiidae from the Emperor Seamounts, North Pacific Ocean are described and compared to congeners. Erylus imperator n. sp. differs from all other species of Erylus from the region in having large oxyasters, present in only one other species from which it differs in several other characters. Furthermore these oxyasters most often display the tendency to reduce the number of rays to a degree that they appear as triods, microxeas or even microtylostyles, depending on the number of retained rays. The second new species, Geodia arma n. sp. is a Geodia without triaenes, a group formerly described under the genus Geodinella. We compared G. arma n. sp. with all congeners lacking triaenes and determined that it is the only known species with a cortex of up to 6 mm in thickness and also the only species with oxeas up to 6 mm in length Which range from thin and sinuous to thick and straight. To our knowledge these are the first descriptions of sponge species from the Emperor Seamount region. 

The genus Anonyx (Crustacea, Amphipoda) in the North Pacific Ocean: Anonyx validus group

1983 ◽  
Vol 61 (12) ◽  
pp. 2921-2931 ◽  
Author(s):  
D. H. Steele
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
North Pacific ◽  
Posterior Margin ◽  
North Pacific Ocean ◽  
Side Plate ◽  
The North ◽  
Two New Species ◽  
The North Pacific

Two new species, Anonyx dalli and A. shoemakeri, closely allied to Anonyx validus Gurjanova are described. This group of three species is unique within the genus Anonyx in having short, broad, and poorly armed second uropods and an angular lower posterior margin on the side plate of peraeopod 4. These species are medium sized and confined to the North Pacific Ocean.

Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean

Zootaxa ◽  
2013 ◽  
Vol 3646 (4) ◽  
pp. 386 ◽  
Author(s):  
AMANDA S. KAHN ◽  
JONATHAN B. GELLER ◽  
HENRY M. REISWIG ◽  
KENNETH JR. L. SMITH
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
North Pacific ◽  
North Pacific Ocean ◽  
Glass Sponge ◽  
Two New Species

Two new species of snailfishes of the genus Careproctus (Cottoidei: Liparidae) from the western North Pacific Ocean with a range extension of Careproctus brevipectoralis

Zootaxa ◽  
2021 ◽  
Vol 4951 (2) ◽  
pp. 361-371
Author(s):  
YOSHIAKI KAI ◽  
HIROMITSU ENDO ◽  
FUMIHITO TASHIRO ◽  
NAOHIDE NAKAYAMA
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
North Pacific Ocean ◽  
Congeneric Species ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
Intraspecific Variations ◽  
Two New Species ◽  
Fin Rays ◽  
Pectoral Fin Rays

Three snailfish species of Careproctus (Cottoidei: Liparidae), including two new species, are described from the deep Pacific Ocean off northern Honshu Island, Japan. Careproctus cyanogladius sp. nov., collected from the depths of 2,698–3,223 m, can be distinguished from congeneric species by having the following combination of characters: vertebrae 63; dorsal-fin rays 57–58; anal-fin rays 50; principal caudal rays 7; pectoral-fin rays 29–31; pectoral fin without a notch; uppermost pectoral-fin base below a horizontal through posterior margin of maxillary; pelvic disk oval; chin pores well separated; teeth simple; pyloric caeca 6–10; body pale blue or gray when fresh. The other new species, Careproctus orri sp. nov., collected from depths of 640–808 m, can be distinguished from congeneric species by having the following combination of characters: vertebrae 58–60; dorsal-fin rays 52–53; anal-fin rays 47–49; pectoral-fin rays 34–35; pectoral fin with a distinct notch; cephalic pores 2-6-7-2, chin pores single, unpaired; gill slit extending ventrally to 5th or 6th pectoral-fin ray; teeth strongly trilobed; peritoneum dark, stomach white. In addition, one specimen of Careproctus brevipectoralis Chernova, Thiel & Eidus, 2020 was newly collected from Japan, and is redescribed here in detail with comments on intraspecific variations. 

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