982 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvni. 



ence of iniportanee c'onsistiiit>" in the concealment of the spinous dor- 

 sal in Pxijclu-dJntes. A minor difference is found in the backward 

 extension of the vertical tins in (TlJhertidia^ the dorsal and anal being 

 separated from the caudal oidy l>y a notch, leaving- none of the caudal 

 peduncle free. Because of the condition of the type of G. Klgolutcx^ 

 this character could not be determined and is incorrectlv represented 

 in the figure of the type. In the larger specimen before us, the upper 

 profile of the anterior part of the head is less concave than is repre- 

 sented in the type drawing, the snout is more bluntly rounded, the 

 mouth is less oblique, and the maxillary scarcel}' extends beyond the 

 vertical from the middle of the eye. The shape of the head does not 

 ditier essentially from that of Psych rolutiS jtaradoxus;. In (TiJhertldla^ 

 however, the fold of the lower jaw is continuous across the sym- 

 physeal region, while in P.^ycJuvlutex it is broadly interrupted in the 

 middle line by a frenum. The spine described on the anterior end of 

 the preorbital and that on the upper part of the shoulder girdle are 

 not externally apparent in this larger example. The tin rays and pro- 

 portions are as follows: 



Dorsal VIII, 16; anal, 13; pectoral, 16. 



Total length millimeters. . 68 



Length to base of caudal do 56 



Length of head hundredths. . 39 



Greatest depth do 26 



Depth of caudal peduncle do 7 



Greatest width of head do 28 



Length of snout do 12 



Diameter of eye do 7 



Interocular width do 14 



Length of maxillary do 17 



8nout to first dorsal spine do 37 



Length of pectoral do 35 



Length of ventrals do 17 



Length of caudal _ do 23 



XENERETMUS INFRASPINATUS Gilbert. 



One specimen of this well-marked species, 98 mm. long, was dredged 

 by Professor Kincaid in East Sound, July, lOOi. The onl}- speci- 

 mens hitherto known were the type and cotype taken by the U. S. 

 Bureau of Fisheries steamer Alhaf ro-'^s off Cape Flattery at a depth of 

 77 fathoms." The specimen here listed agrees with the type in fin- 

 formuhe and measurements and in all the distinctive characters of the 

 species. The following corrections should be made in the original 

 description, and apply as well to the type as. to this specimen. The 

 least interorbital width equals three-fourths the diameter of the orbit. 

 The rostral plate contains six instead of live spines, as follows: three 

 short spines on its upper surface, directed upwards and backwards; one 



"Gilbert, Proc. Cal. Acad. Sci., M ser.. Ill, 1904, p. 262, pi. xxvji. 



