THE LANTERN FISHES. 231 



overlapping, their insertion a little in advance of dorsal ; origin of anal under 

 last dorsal ray; adipose dorsal immediately. behind anal. 



Photophores: A minute antorbital photopliore between eye and nostril. 

 Pectorals as usual in this section in a nearly straight vertical line, the upper 

 immediately below the lateral line, the middle in front of base of fin im- 

 mediately above its middle, the lower nearly vertically below the second, not 

 on shoulder girdle, and not concealed by opercular margin ; the line which 

 joins the three passing a little in advance of the second pair of thoracics. 

 Thoracics 5, none of them elevated, the first four pairs forming gently di- 

 verging lines, the fifth abruptly diverging, in front of outer ventral rays ; 

 interval between first and second pairs longest, nearly equaling that separat- 

 ing second from fourth pairs ; third interspace shortest, the fourth less than 

 the second. Supra-ventral vertically over axil of ventral fin, midway 

 between base of ventral and lateral line. Ventrals 5, the anterior pair 

 nearer median line than are the inner ventral rays ; second and third pairs 

 more widely separated, opposite the outer half of ventral base ; fourth jJ'iii' 

 nearer median line, fifth pair again diverging. Supra-anals distinctly but 

 slightly angulated, the third pair on lateral line, vertically above first anal 

 ray, the second above or slightly behind the vent, the first farther forward, 

 in a line joining the second supra-anal and the fourth ventral ; space between 

 first and second supra-anals about half that between second and third. 

 Antero-anals 7, the first nearest the anal base, the second, third, and fourth 

 in a slightly diverging line, the fifth, sixth, and seventh in a more strongly 

 diverging curve which includes the postero-lateral ; the seventh more widely 

 spaced than the preceding photophores, but distinctly nearer the sixth than 

 the postero-lateral. Postero-lateral on the lateral line, under middle of 

 adipose fin, a little behind last anal ray. Postero-anals 5, widely separated 

 from the precaudals, the fifth nostero-anal equidistant between second 

 postero-anal and first precaudal. On one side there are apparently two scars 

 of photophores between the post-anal series and the first precaudal, indicating 

 that the two series are continuous. But these cannot be found in other 

 specimens of toivnsendi, nor on the other side of the specimen in question. 

 They may be scars of the minuter photophores which are generally distributed. 

 Precaudals i, the first three equally spaced, in a gentle curve, the first 



