104 MEMOIRS OF THE CARNEGIE MUSEUM 



number, the postero-anals six. The first two precaudals are in line with the 

 postero-anals, the third a little elevated, the fourth near the lateral line, above 

 and slightly in advance of the third. 



Three luminous scales in front of lower caudal lobe, two in front of the 

 upper; a single luminous scale in front of adipose fin. 



In addition to the larger photophores, the head and body are thickly set 

 with smaller luminous dots, which are surrounded with black pigment-rings and show 

 a more or less definite arrangement. A well-defined series of about fifteen 

 occur equally spaced along outer surface of mandible, and a similar series is on 

 the maxillary. On sides of head and body, there is one to each scale, arranged 

 under the tip of the exposed portion, as in L. jordani. A few extend out on 

 the base of the caudal fin. 



The general color is blackish brown. 



The type is deposited in the U. S. National Museum. 



List of Stations. 

 4969. 33° 23' 40" N., 135° 33' E. Intermediate 300 fathoms. 

 5058. Suruga Bay Intermediate 300 fathoms. 



5064. Suruga Bay Intermediate 300 fathoms. 



30. Lampanyctus jordani sp. nov. (Plate XIV.) 



Type 121 mm. long to base of caudal, from Nemuro, Hokkaido, Japan 

 (C. M. No. 4617), obtained in 1900 by Dr. Jordan. 



Most closely related of L. 7nacropterus Brauer, but the second and third 

 antero-anals equally elevated, well above the level of the remainder of the series. 

 A spot on the shoulder and one on the cheek. Four ventral photophores, none 

 of them distinctly elevated. Luminous scales confined to the caudal peduncle 

 and the front of the adipose fin. Dorsal fin shorter than the anal. 



Measurements in hundredths of length without caudal fin: Length of 

 head 27 (in cotypes 28); diameter of eye 6; length of snout 4.5; frontal width 

 opposite middle of orbit 8; length of maxillary 20; depth of body 23; depth of 

 caudal peduncle 12; distance from tip of snout to origin of dorsal 47; to base 

 of ventrals 44; to last dorsal ray 60; to first anal ray 59; to last anal ray 80; 

 to front of adipose dorsal 81; length of pectoral 23; of ventral 16. 



Dorsal rays 13 (including 2 rudiments); anal rays 18 (2 rudiments); pectoral 

 rays 15; ventral rays 9 (outer ray rudimentary). Scales of lateral line 40. 



Mandible strongly upcurved towards symphysis, protruding beyond the 



