2050 Bulletin ^7, United States National 3Iusenm. 



atines (Steindaehner apparently saw none on palatines). A single bar- 

 bel of varial)le length (sometimes twice ag long as, sometimes less than 

 diameter of orbit) at tip of lower ,jaw. Gill membranes united behind, 

 free from istbmns. First dorsal with 12 pairs of plates between it and 

 the occiput; anal long, beginning under middle of first dorsal; caudal 

 about 3 times as long as wide at base; pectorals long, 51 to 54 in 

 body, width at their base about 4 in their length; veutrals about 3 

 in pectorals and 4 in head in female, 2 in pectorals and 2| in head 

 in male. Color reddisli or grayish brown with innumerable minute 

 black spots; ventral surface pale, from front of anal to caudal pro- 

 gressively darker with minute black spots; a dark liand extends along 

 the side of snout, across orbit and preopercle, and along the side of body, 

 dying out posteriorly; anterior dorsal dusky, darker behind; second dor- 

 sal indefinitely cross-banded with short streaks of darker on rays ; caudal 

 dusky ; pectoral pale, indefinitely banded with short streaks of darker on 

 rays; veutrals pale in both sexes; anal pale. Vertebral column (of a 

 single specimen) with 15 abdominal and 30 caudal (including hypural) 

 vertebrjB. North Pacific, south to Japan and Oregon. The specimens 

 here described from Bristol Bay (Coll. J/ft«i/-oss) ; .Japan (Steindaehner); 

 Arctic Ocean near Bering Strait (W. .J. Fisher, Steindaehner) ; Bering Sea, 

 Bristol Bay* (Gilbert); (Tareinsky Bay (Barrett-Hamilton) ; Port Clar- 

 ence, Alaska (Scofield).t A variable species. Length of longest specimen 

 examined by us 5^ inches, {barhatus, provided with a barbel.) 



Siphagonus barbafue, Steindachner, Iclith. Beitriige, v, 140, taf. 5, Sitzb. der k. Acad, der 

 Wiss., Lxxiv, July, 1876; Jordan & Gilbert, Synopsis, 725, 1883; Jordan, Cat., '113 



2107. PALLASIXA AIX, Starts. 



Head from tip of snout, 4 in body; depth 3i in head. D. VIT, 7; A. 11; 

 P. 11 ; eye 5^ in head. Mouth rather oblique, the lower jaw much project- 



* Dr. Gilbert notes specimens from numerous stations in Bristol Bay in 4J to 70 fathoms. 

 The dark band on sides is often very stronnly marked; the barbel varies much in length. 

 D. VII to Till, 6 to 8; A. 9 to 12. 



tMr. Scoiicid gives the following note on 6 specimens taken at Port Clarence, Alaska, 

 aver:ii;iiig al)oiit d inches in length. We lia\o compared tlieni with specimens of P. bar- 

 bata t'vnn I'.risiol llav, Ahiska, ^ind tind oiii- siiccimens liav(> a nuich longer barbel and 

 sliglitly longer pectorals. In all otlier iioints they appear to be the .same. The barbel is 

 ^distaiice from tip of lower .jaw to e(l:;e ol uill membrane. The 2 dorsals vary in their 

 distance from each other. In 1 spei im. n the\ touch, in the others they varyin distance 

 the width of 1 or 2 plates. Following is tlie tin formula of the specimens. 'These speci- 

 mens show a sexual difierence. The leniales have shorter vcntrals and a lower smaller 

 first dorsal than the males. The first dorsal, too, is without color. The males have larger 

 ventral fins and a large darkly colored first dorsal : 



