550 Bulletiji ^7, United States Natiotial Museutn. 



71° 24' 30'^ W. longitude, at the depth of 1,043 fathoms. (Goode & Bean.) 

 (Named for Dr. Theodore Gill.) 



Cetomiiims gillii, Goode & Bean, Proc. U. S. Nat. Mus., 1894 (1895), 452, pi. 17, fig. 2; and in 

 Oceanic Ichthyology, G9, fig. 78, 1895, Gulf Stream. (Type, No. 35529. ColU AlbatroBS.) 



827. CETOMIMUS STOBERI, Goode & Bean. 



D. 19; A. 16. Head 3J; depth about 4 in total length; eye 18 in head 

 or 7 in snout, inserted nearer dorsal profile than to jaw, its position in 

 the vertical being twice as far from the line of the upper jaw as from the 

 dorsal line, and nearly in the Hue of the vertical erected from middle of 

 upper jaw to the right angles of its edge. Lower jaw strongly curved, 

 projecting far beyond upper. Origin of dorsal fin a little in advance of 

 that of anal, which is inserted at a distance from the vent equal to 3 or 4 

 times diameter of eye ; dorsal fin longer than anal, the termination of 

 the latter being under the fifth ray from the end of the dorsal ; they are 

 about equal in height, and the direction of the rays when erected is back- 

 ward and at an acute angle with the axis of the body ; the longest rays 

 about 2i in head; pectoral fin inserted very far down, the lower portion 

 of its peduncle almost on the abdominal line; the fin is lanceolate, and, 

 although mutilated, is believed to have been about i as long as the head ; 

 lateral line in a sinuous curve from a point above the upper angle of gill 

 opening to a point somewhat in advance of insertion of dorsal, and 

 thence in a straight line to base of caudal. A line of mucous pores on 

 either side of the median dorsal line in advance of dorsal. 



A single specimen of this species, 4J inches in length, was taken by 

 the Fish Commission steamer Albatross at station 2222, on September 

 6, 1884, at a depth of 1,535 fiithoms. (Goode & Bean.) (Named for David 

 Humphreys Storer, the accomplished author of the History of the Fishes 

 of Massachusetts.) 



Cetomimits storeri, Goode & Bean, Proc. U. S. Nat. Mus., 1894 (1895), 453, pi. 17, fig. 3; and in 

 Oceanic Ichthyology, 69, fig. 79, 1895, Gulf Stream. (Type, No. 35634. Coll. Albatross.) 



Family LXXV. MYCTOPHID^. 



(The Lantern Fishes.) 



Body oblong or moderately elongate, more or less compressed, covered 

 with scales, which are usually cycloid, but sometimes ctenoid. Mouth 

 wide, the entire margin of the upper jaw formed by tlie long and slender 

 premaxillaries, closely adherent to which are the slender maxillaries. 

 Teeth various, mostly villiform, and in bands in the jaws; also on the 

 pterygoids, palatines, and tongue; and on the vomer in adults. No bar- 

 bels. Gill membranes separate, free. Branchiostegals 8 to 10. Pseudo- 

 branchi.'c well developed. Gill rakers long and slender. Lateral line 

 usually present, the scales prominent and often enlarged. Cheeks and 

 opercles scaly. Adipose tin present; dorsal fin short, median, of soft 

 rays ; pectorals and ventrals present ; anal fin moderate ; caudal 

 forked. Air bladder small. Intestinal canal short. Luminous spots or 

 photophores more or less regularly placed along sides of body ; larger 

 luminous glands often present on the head or on the caudal peduncle. 



