MUSEUM OF COMPAKATIVE ZOOLOGY. 215 



34. Poromitra capito, new species. 



The height of the body is two sevenths of its length to base of caudal rays ; 

 its width about one half its height. Scales as large as the pupil, with concen- 

 tric striee, about twenty-four iii the lateral line, and about ten in the transverse 



series. 



Head about two fifths of standard length, somewhat resembling in appear- 

 ance that of Alepocephalus Bairdii. The eye is large, circular, located nor- 

 mally. The length of the upper jaw is three sevenths that of the head ; that of 

 the lower jaw about one half. The end of the maxillary is nearly iii the per- 

 pendicular from the posterior limb of the pupil. The length of the snout is 

 about equal to the least diameter of the eye. The distance from the limb 

 of the preoperculum to the end of the opercular flap is equal to that from the 

 tip of the snout to the posterior margin of the orbit. Teeth as described in 

 generic diagnosis. Dorsal fin inserted midway between tip of snout and ori- 

 gin of middle caudal rays. The fin is mutilated and its outline cannot be 

 determined ; it is composed of seven or eight spines and six soft rays, and 

 the length of its base is nearly equal to the height of the body at its in- 

 sertion. 



The anal fin is inserted in the perpendicular from the base of the eighth 

 dorsal ray. It is composed of nine rays, and the length of its base is half that 

 of the dorsal base. 



The pectoral is inserted far below the axis of the body, and with a single 

 scale between its axil and the branchial opening. Its length is twice the dis- 

 tance of its insertion from the snout. 



The ventral is minute (apparently, and is inserted in advance of the pecto- 

 ral) ; it has apparently seven or eight rays. 



The caudal is mutilated, but apparently composed of fifteen rays. 



Radial formula : D. VII or VIII, 6 ; A. 9 ; V. 7 or 8 ; P. 12 ; C. 15. 



Two examples were secured, — one from an unknown locality. The list 

 follows. 



SYNODONTID^. 



BATHYSAURUS, GiJNTHER. 



Bathysaurus, GUnther, Ann. and Mag. Nat Hist., Aug. 1878, p. 181. 



35. Bathysaurus Agassizii, new species. 



Body elongate, subcylindrical, with depressed head and tapering tail, its 

 greatest height contained seven times in its standard length, and eight times in 



