Bathypallenopsis stylirostris (Hedgpeth 1949)

Pallenopsis (Bathypallenopsis) stylirostris Hedgpeth

Pallenopsis stylirostre Hedgpeth, 1949:278–280, fig. 36a–e.

Pallenopsis (Bathypallenopsis) stylirostrum.—Stock, 1975:1032 [text].

Pallenopsis (Bathypallenopsis) stylirostris.—Nakamura and Child, 1991:40.

MATERIAL EXAMINED.—OREGON: Cr 6707, sta OTB 188-02c (1);cr 6710, sta OTB 208-02 (1).

WASHINGTON: Cr DWD, sta BMT-10 (8 with eggs, 1, 13, 3 juv).

DISTRIBUTION.—This species was only known from off Honshu Island, Japan, with the type specimens and one other lot taken in about 1000 to 1300 m. As in most of the known species of this report, the 27 specimens recorded herein are reported for the first time from the eastern North Pacific off the Oregon and Washington coasts. The depths at these three stations also extend the species to deeper waters in 1550 m off the Straits of Juan de Fuca and 1400–1600 and 2030 m off northern Oregon.

DIAGNOSIS.—A member of Stock's (1975) tydemani-group. Species has tapering or styliform proboscis giving easier recognition among other species with inflated proboscides. Ocular tubercle taller than its basal diameter and taller than tubercle of most other species. Abdomen short; propodus also fairly short with few sole spines; heel spines little larger than sole spines. Male cement gland tube slightly longer than half femoral diameter with tendency to point distally at low oblique angle (as shown in Hedgpeth, 1949, fig. 36e).

Pallenopsis (Bathypallenopsis) stylirostris Hedgpeth

Pallenopsis stylirostris Hedgpeth, 1949:278–280, fig. 36a–e.

Pallenopsis (Bathypallenopsis) stylirostris.—Stock, 1975a:1032 [text].

MATERIAL EXAMINED.—HONSHU: Sanriku-oki, E of Fudai, 39°59.0′N, 142°37.7′E, 1225–1249 m, KT85–11, sta SR16, 12 Aug 1985 (1 with eggs, 3, 1 juv).

DISTRIBUTION.—Hedgpeth found no evidence that this species is bathypelagic and none exists for the above specimens. The types were taken off southern Honshu in 1000 to 1300 meters. The above record greatly extends the known distribution for this species in Japan to northern Honshu, but it falls within the known depth range.