Jordan and Ever man H. Pishes of North America. 561 



840. LAMPADENA SPECCLIGERA, Goode & Beau. 



Head 4; depth 4-J-; eye very large, 3. D. 13; A. 14; V. 8; P. very 

 small; scales 4-35-5. Least depth of tail f height of body. Greatest 

 depth of head about of its length. Distance between posterior margin 

 of orbit and preoperculum edge about \ diameter of eye. Snout short, 

 conical, its length about \ diameter of eye. Cleft of mouth somewhat 

 oblique, the lower jaw included. Posterior tip of maxillary distant from 

 angle of preoperculnm a space almost equal to length of snout. Origin 

 of dorsal nearer tip of snout than root of caudal by a distance equal to 

 the length of its own base, and inserted nearly over root of ventral, over 

 eleventh scale of lateral line, its last ray over vent in advance of origin 

 of anal ; pectoral not reaching nearly to vertical from origin of ventral, 

 its length being equal to | that of upper jaw, and a little greater than 

 diameter of eye ; ventral not reaching to vent, its length equal to about 

 \ that of head. Scales smooth, those of the lateral line not larger than 

 the others, the tubes passing through them luminous. Eight scales 

 between the adipose fin and the margin of the pearl-colored dorsal patch ; 

 there are 35 scales in the lateral line, 4 above and 5 below it. The lumin- 

 ous spot, | as long as the -diameter of the eye, club-shaped, on the top of 

 the tail immediately in front of the base of the caudal ray. A similar 

 spot on the lower edge of the caudal peduncle, a little in advance of the 

 origin of the caudal rays, its posterior edge about in line with the center 

 of the dorsal patch, its length about the diameter of the eye ; a lumin- 

 ous gland above and below on caudal peduncle ; no postanal series of 

 superaual photophores, these being replaced by the subpeduncular 

 glands ; anterolateral 1 ; posterolaterals 2 ; precaudals in two groups, the 

 anterior and lower one of two photophores widely separated from the 

 posterior and single one, which is placed at the end of the lateral line ; 

 the single posterolateral is under the root of the soft dorsal, and con- 

 siderably behind the termination of the anal. Gill rakers 6 above and 

 13 or 14 below the angle, the longest about i as long as the diameter of 

 the eye. Color purplish brown ; very glossy, almost iridescent. One 

 specimen from 39 48' W., 70 36' N., at 551 fathoms. (Goode & Bean.) 

 (speculiyer, mirror-bearing.) 



Lampadena speculigera, GOODE & BEAN, Oceanic Ichthyology, 86, 1895, Gulf Stream. (Type, 

 No. 43797. Scb. Alice G. Wonson.) 



261. NANNOBRACHIUM, Gunther. 



Nannobrachium, GUNTHER, Deep-Sea Fishes, Challenger, 199, 1887, (nigrum). 

 Stenobrachius, EIGENMANN & EIGENMANN, Proc. Cal. Ac. Sci., in, 1890, 5, (leucopsarnm). 



This gemis is closely allied to Lampanyctus, from which it differs chiefly 

 in the small pectorals. Caudal peduncle with luminous blotches above 

 and below. Photophores small, arranged about as in Lampanyctus. 

 Scales of lateral line enlarged in all species, so far as known. Last ray 

 of dorsal more or less behind first of anal, (vdwoe, dwarf; fipax'iuv, arm.) 



a. Anal spots 12 to 14; anal rays 14 or 15; last ray of dorsal about over third anal ray. 



b. Gill rakers 5 + 13 to 15; caudal spots 3 or 4; snout bluntish; photophores moderate. 



P . N . A. 37 



