194 Annals of the Carnegie ]\Iuseum. 



but the border of the caudal is white. In life the color is senna-brown 

 or dull opaque yellow, v.'ith the darker markings brown. One speci- 

 men had the spinous dorsal a very bright carmine, the color continued 

 down on the back to the middle of the side. Another had the base of 

 the spinous dorsal and the entire body below it a bright ochre-yellow. 

 Many of the specimens are thickly covered with a thick growth 

 of hydroids. 



43. Pallasina aix Starks. 



A few specimens were collected. Though this species should pos- 

 sibly stand as Pallasina barbata it seems better to consider it as distinct 

 until better evidence to the contrary is presented than I am able to 

 furnish with the material at hand.' It has a larger eye than in any of 

 the available specimens from Alaska. This is particularly so in 

 the single large example (five inches long) in which the eye is five- 

 hundredths of the length, while in specimens of equal size from Alaska 

 it is three and one-half hundredths. The length of the mandibular 

 barbel is not variable in Puget Sound examples. As has been pointed 

 ■out before, specimens with either two or three preventral median 

 plates occur both among the typical Pallasina barbata and Pallasina 

 aix, but among the latter two is the usual number, and three the 

 exception, while among the others two is the exception. In the cotypes 

 of Pallasina aix and the specimens of the present collection from Puget 

 Sound sixty-four have two plates, six have three plates, and two have 

 one plate. 



44. Xeneretmus latifrons (Gilbert). 



Specimens differing in no essential way from the description of 

 the type, or from specimens collected from off Monterey by the 

 "Albatross," were taken rather abundantly in the dredge at a depth 

 of about forty fathoms. 



45. Xeneretmus infraspinatus Gilbert. 



A couple of dozen specimens of both sexes of this species were taken 

 by the dredge in deep water in company with X. alaskauiis, which 

 exceeded it in abundance about three to one. The largest of these 

 is about four and one-half inches in length. 



This species is much more robust than X. pcntacanthiis, as was 

 pointed out in the original description (Proc. Gal. Acad. Sci., Ser. 

 Ill, Vol. Ill, p. 262). The width of the head is from 5.75 to 6.5 in 

 the entire length to the base of the caudal, while in X. peMtacanthus 



