PKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 465 



2912G is 10.7 inclies long; 29127, llf inches; and 29128, 11^ inches. 

 In these examples the eye is fonr-fifths as long as the snout. There are 

 no traces of the i)seu(io stripes characteristic of the adult fish. 



The first of these was caught in 18 fathoms, nearly- fresh water. 



6. Gadus morrhua Linn. 



29124 (80) juv. Drew's Harbor, Brit. Col. July 27, 1881. 



29125 (114) juv. Kygani Straits, Alaska. Sept. 1, 1881. 



No. 29124 is 9.7 inches long ; No. 29125 measures 9 inches. There are 

 19 gill-rakers on the first branchial arch, the longest of them scarcely 

 more than one-third as long as the eye. The fish are entirely free from 

 external parasites. 



No. 29124 was taken in 12 fathoms. 



Delolepis, new genus, CryptacaniMdce. 



Body anguilliform, moderately compressed from the vent backward ; 

 provided with small, cycloid, imbricated scales. 



Vent nearly median ; a small anal papilla. 



Lateral line continuous, nearly straight, slightly above the middle of 

 the body in front of the vent, median from vent backward; it consists 

 of a series of open pores without prominent raised tubes. 



Head oblong, subquadrangular, shallow concave on the vertex, naked, 

 with the muciferous channels well developed. Snout short, obtuse. 

 Nostrils single, tubular, close behind the intermaxillars, in a horizontal 

 line with the middle of the eye. Eyes small, encroaching on the dorsal 

 outline, somewhat more prominent than in Cryptacanthodes, sei^arated 

 by a moderately wide interspace and surrounded by a series of shallow 

 pits. Mouth wide, oblique, terminal, the lower jaw projecting beyond 

 the upper. 



Lips fleshy. Intermaxillars slightly protractile, with two rows of 

 small conical teeth, re-enforced by a few larger ones at the symphysis 

 behind the inner row. Mandibular teeth uniserial, larger than the 

 intermaxillar, a few additional ones at the symphysis. Vomer and 

 X^alate armed with a few moderately large teeth. Tongue smooth, ad- 

 herent. A few shallow pits in the under surface of the mandible, con- 

 tinued in a series on the posterior border of the preoperculum. Oper- 

 culum unarmed. 



(xill-openings wide, the membranes attached to a narrow isthmus, ex- 

 tending backward beyond the pectoral base, and without a projecting 

 flap. Gills four, a wide slit behind the fourth; gill-rakers very short, 

 obtuse, in moderate number. Pseudobranchiae. 



Brauchiostegal rays, 6. 



Pectoral tins short, their bases almost vertically placed and entirely 

 below the middle of the body. 



Dorsal fin commencing over the upper angle of the gill-opening and 

 Proc. Nat. Mus. 81 30 Aug. 4, 1882, 



