API'KNDIX. 527 



Body very clonsati', its licigiit nearly eijual to its tliickness, and scarcely one seventeenth 

 of its length; length of head one-eighth length of the body. Head Hattened, enveloped 

 in mucous skin; snout rounded; its length one-third that of the head. Jloutli small, lips 

 thick, iringed: the ui)i)er jaw fastened far beyond the lower one, though the tliickness of 

 the integument does not allow us to determine the point where the maxillary terminates. 

 Teeth very nearly couical, pointing backward, in both jaw.s; teeth also upon the vomer and 

 palatines. A single nostril is distinguishable, tubular, and placed far forward on the 

 border of the lip, so that at tiist sight it might be mistaken for one of the mucous openings, 

 of which there are about six on the upper jaw, and four or five iu each branch of the lower 

 jaw. Eye superior, scarcely visible even in the fre.sh specimen, being hidden under the 

 skin; diameter scarcely one ninth of the length of the head and one-third thatof the nuizzle 

 e(iualing the width of the interorbital space. The branchial opening is very large, though 

 the brauchiostegal membrane does not adhere to the isthnuis but by a very slight attach- 

 ment. The skin of the head is naked. 



The vent is fouiul a little in advance of a ])oint which is two-.sevenths of the distance 

 from the tip of the snout to the tip of the tail. Scales, resembling pale spots, are very dis- 

 tinct on the posterior part of the body, and in the forward part of the body they may be 

 seen clearly on the ventral jjortion of the animal after it has been kept in alcohol. A lateral 

 line, scarcely distiuguishable, is anteriorly nearly iu the middle of the height, but poste- 

 riorly descends clo.se to the ventral line. 



Dorsals placed far back, commencing at the eud of the anterior fourth of the length ; the 

 origin of the anal still farther back. These tins are low, exactly similar, coalescing with 

 the caudal. Pectoral large, enveloped in a thick integument; its extremity does not reach 

 to the"vertical from the (uigiu of the dorsal. The ventrals are represented each by a single 

 ray apparently, although it is probable that, in reality, there are several united in the same 

 cutaneous envelope. 



Color, in fresh condition, white, slightly blni.sh; with the head, and the dorsal and 

 ventral lines close to the base of the corresponding iins, a clear blue indigo; abdomen, 

 dark: pectorals, veutrals, and the margin of the vertical tins, sepia brown; iris, bluish. 



Two sitecimeus were obtained by the French explorers iu the North Atlantic at station 

 133, in 3,975 meters. 



Li/coichchis porifcr, Gilbert (Proc. (J. S. N. M., xiii, 1890, 104). A single specimen, 12 

 inches long, was«obtained from Albatross station 3009, oft" the coast of southern California, 

 in 857 fathoms. 



Page 313: Before Lycodopsis insert: 



APRODON, Gilbert. 



Aprodon, Gilbert, Proc. I'. S. N. M., xiii. 1890, lOCi. 



Difleriug from lAjcodes only in dentition, the teeth beuig present in a single strong 

 series on. the iialatiues, but none on the vomer. The genus is thus intermediate between 

 Lycodes and Lycodopsis. 



Ee]ireseuted by a single species, A. Corteziana {loc. cit., 107), described from six speci- 

 mens obtained from Albatross stations 2925 and 2918, oft" the coast of southern California, 

 in 339 and 266 fathoms. 



Lycodopsis paxillm, Gilbert (Proc. \J. S. N. 51., xiii, 1890, 105). A single specimen was 

 taken from Albatross station 2980, oft" the coast of southern California, in 603 fathoms. 



Lycodopsis pacificus, Collett, was described from a specimen in the Berlin Museum, said 

 to have come. from Ja])an. There is no evidence that it was from deep water. 



After Lycodopsis iusert: 



BOTHROCARA, Bean. 

 liothrocaru, Bkan, Proc. U. 8. N. P,I., xiii, 1890, 3«. 



This genus resembles Maynea, but the vomer and palate are toothless. Weak teeth in 

 the jaws iu narrow bands. The lower jaw is barely included. Pscudobranchia^ l»resent. 

 Brauchiostegals, six. Gill-membranes narrowly attached to the isthmus. Large i)ores 



