192 BULLETIN 201, UNITE© STATES NATIONAL MUSEUM 



In recording this species under the name N. nigra in 1921 1 called at- 

 tention to the differences in the fourth pleopod of the male in my pos- 

 session from that described by Nakazawa. It is now clear, as I sug- 

 gested at the time, that my specimens were immature. The present 

 specimens agree with Nakazawa's description. 



NEOMYSIS KADIAKENSIS Ortmann 



Figure 75 



Neomysis kadiakensis Ortmann, 1908, p. 8. — W. L. Schmitt, 1919, p. 7B, fig. 3e. — 

 Tattersall, 1932b, p. 324, figs. 45-50 ; 1933, p. 10. 



Occurrence. — West coast of North America: Half Moon Bay, 

 Calif., electric light, April 23, 1890, 1 adult male; San Pablo Bay, 

 Calif., Chinese shrimp nets, November 11, 1890, C. H. Townsend col- 

 lector, 1 female ; Monterey Bay, Calif., 30 fathoms, Nov. 12, 1930, G. E. 

 MacGinitie collector, 10 females, 15 males ; Albatross stations : 2883, 2 

 females; 2884, 1 male; 4272*, types, identified by Ortmann (1908) ; 

 4440, 2 adult females; 4441, 6 females, 3 males; 4756, 1 adult male. 

 During the survey of San Francisco Bay, 1912-13, the Albatross col- 

 lected at the following stations: H4998, 15+ specimens; H5101, 2 

 specimens; H5114, 1 specimen; H5115, 1 specimen; H5120, 9 speci- 

 mens; H5123, 1 specimen; H5128, 1 specimen; H5136, 12 specimens; 

 H5137, 50+ specimens; H5140, 35+ specimens; H5193, 15 specimens; 

 H5228, 8 specimens; H5242, 7 specimens; H5255, 25+ specimens; 

 H5264, 7 specimens; H5274, 2 specimens; H5275, 2 specimens; H5298, 

 35+ specimens; H5301, 5 specimens; H5302, 3 specimens; H5303, 2 

 specimens ; H5304, 1 specimen ; H5305, 17 specimens ; H5306, 15 speci- 

 mens ; H5307, 2 specimens ; H5312, 1 specimen ; H5313, 4 specimens ; 

 H5314, 6 specimens; H5316, 6 specimens; D5777A, 1 specimen; 

 D5778B, 3 specimens; D5797, 2 specimens; D5798, 12 specimens; 

 D5799, 7 specimens ; D5828, 8 + specimens ; D5830, 2 specimens. 



Distribution. — This species is found along the whole of the west 

 coast of America from Alaska to California in depths to 115 fathoms. 



Remarks. — This species has the following distinguishing charac- 

 ters: (1) The front margin of the carapace (fig. 75, d) is produced 

 into a wide subquadrangular plate, less than half as long as broad, 

 with rounded angles. (2) The eyes, including the stalk, about iy% 

 times as long as broad, cornea occupying two-fifths of the eye in dorsal 

 view. (3) The antennal scale (fig. 75, a) is 13 to 14 times as long as 

 broad. (4) The sixth joint of the endopod of the third to the eighth 

 thoracic limbs is divided into 10 to 12 subsidiary joints. (5) The 

 telson (fig. 75, b) is triangular in shape, about %y 2 times as long as 

 broad at the base, narrowingly regularly to a slender truncate apex, 

 which is about one-tenth of the width of the base; apex armed with 

 two pairs of spines, the outer pair twice the length of the inner pair ; 



