382 PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



iires about 2 millimeters. The second arch has about the same number, 

 while on the third there are but 6 or 7, very small, and present only in 

 The angles, while in the fourth there are about the same number, very 

 inconspicuous. 



The dorsal fin originates above the middle of the operculum, and at 

 a distance from the snont equal to twice the length of the snout. 



The anal fin is composed of about 100 spines and rays. Owing to 

 the mutilation of the si)ecimen it is impossible to determine how many 

 there are of each, but there are supposed to be about 28 rays normally 

 united by a membrane into a fin. 



The caudal is also imperfect, but the middle rays are seen to be about 

 half as long as the remnants of the external rays. The fin is supposed 

 to resemble in shape that of Lepidopus oaudatus. 



The pectoral originates under the tip of the opercular flap. Its out- 

 line is rounded above instead of emarginate, as in Lepidopus caudatus. 

 Its longest ray equals in length the postorbital part of the head. 



The ventrals originate at a distance from the snout equal to that of 

 the base of the pectorals from the same point. They are rudimentary 

 and represented by minute scutes, the length of which is 3J millimeters 

 in the specimen before us, and about equal to half the interorbital width. 



Branchiostegals 7; D. 154; A. 100; P. 12; V.I. 



Ciecal api)endages 8 in the specimen examined. Some, however, may 

 have been lost, the abdominal viscera having been partly digested by the 

 halil)ut, in the stomach of which it was found. 



Color: Uniform silvery, with traces of dark color upon head and tail. 



Measurements. 



Taken by Capt. Roderick Morrison (schooner Laura Nelson), from the stomach of a 



halibut. 



Current number of specimen, 29116. 



Locality, western edge of Grand Bank, 80 fathoms. 



Millimeters. 



Extreme length 896 = (35^ inches.) 



Length to origin of middle caudal rays 878 



Body : 



Greatest height 33 



Greatest width 13 



Height at ventrals , .- 33 



Height at anus 30 



Least height of tail 2 



Length of caudal peduncle 16 



Head : 



Greatest length 116 



Greatest width 20 



Width of interorbital area (on the bone) 6 



Length of snout 47 



Length of upi)er jaw 42 



Length of mandible 69 



Length of mandibulary tip 6 



Distanc(i from snout to orbit 47 



Diameter of eye 23 



