86 MEMOIRS OF THE CARNEGIE MUSEUM 



level with the second supra-anal, or a trifle above its level, and the third ventral, 

 the second supra-anal, and the first antero-anal in a nearly straight horizontal 

 hne. 



The anal photophores are 6 to 7 + 5 to 6 in the Japanese material, 6 + 6 

 and 7 + 5 being the prevailing combinations, 6 + 5 and 7 + 6 also occurring. 

 The number 8 was not found in the anterior group, though this occurred in 

 the type specimen. There are no traces of luminous areas around the eye, but 

 the minute pre-orbital photophore above the nostril is present in all specimens. 

 In this respect, the species agrees with D. nodurnus Poey (= lacerta Goode and 

 •Bean), but has no trace of the minute inferior photophore present in the latter 

 within the lower anterior rim of the orbit (Gilbert, Bull. Mus. Comp. ZooL, 

 XLVI, 1906, p. 257, PI. 1). 



List of Stations. 



4969. 33° 23' 40" N., 135° 33' 00" E. 587 fathoms. 



5058. Suruga Bay. Intermediate net, 300 fathoms. 



5063. Suruga Bay. ' Intermediate net, 300 fathoms. 



5064. Suruga Bay. Intermediate net, 300 fathoms. 



15. Diaphus nipponensis sp. nov. 



Type 21 mm. long, from Albatross Station 4920, south of Kagoshima 

 (30° 34' N., 129° 22' E.), open intermediate net at 300 fathoms. 



Very closely allied to D. geviellari (Cocco), differing in the lower position 

 of the photophores of the upper series, the straight supra-anals (not angulated), 

 and the position of the last antero-anal and first postero-anal, neither of which 

 is elevated. In certain of these respects the species agrees with Brauer's 

 figure of a specimen from Messina (Die Tiefsee Fische, 1908, p. 213, text- 

 figure 131), but the latter differs in so many respects from typical D. gemellari, 

 including contour of head, size of the dorsal fin, the position of the postero- 

 lateral with reference to the adjacent spots of the anal series, and the position 

 of the precaudals, that we are justified in doubting the identity of this specimen 

 with D. gemellari. 



Measurements in hundredths of length exclusive of caudal fin (16 mm.): 

 Length of head 35; axial length of snout 6; diameter of eye 7; length of maxil- 

 lary 27; greatest depth 28; least depth of caudal peduncle 13; distance from 

 tip of snout to front of dorsal 47; to insertion of ventrals 46; to front of anal 63. 



Dorsal rays 16; anal rays 14; pectoral rays 11 or 12; ventral rays 9. Scales 

 of lateral line 36. 



