218 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



element is procumbent and subcutaneous, and (2) a second spine, about 

 intermediate between the first and the dorsal fin; soft dorsal with about 

 4 rays ; and without pyloric cceca. 



ONEIRODES." 



Oueirodinae with oval form ; the skin naked; the vomer denligerous j 

 and the cephalic spine with a bulbous termination, surmounted by slen- 

 der filaments in several transverse rows. 



Oneirodes Eschrichtii. 



187i_Oneirodes Escbrichtii Liiiken, Overs. overDansk. Vidensk. Selsk. Forhamll., 1871, 

 pp. 57-74 ; res. fr., pp. 9-lrf, pi. 2. 



Oneirodes with the terminal element of the cephalic spine rather 

 longer than the proximal subcutaneous; the caudal shorter than the 

 distance between its base and the branchial apertures ; and the color 

 black except the terminal half of the spinal bulb, which is whitish. 



Deep sea off Greenland: known from a single specimen 205 millimetres 

 long. 



HIMANTOLOPHIN^. 



Ceratiids with the body and head compressed, with moderate oblique 

 cleft mouth, the mandibular articulation under the eyes; branch ice in 

 ^2^ pairs; branchial arches armed with dentigerous tubercles; spi- 

 nous dorsal represented only by a rostral spine, whose basal element is 

 procumbent and subcutaneous; and soft dorsal with about 5 — 9 rays. 



HIMANTOLOPHUS.t 



Himantolophines of an oblong oval form, a dorsal of about 9 rays, and 

 pectorals with about 12 rays each (?). 



Himantolophus Grcenlandicus. 



1837 — Himantolophus Groenlantiicns lieinhardt, Danske Vidensk. Selsk. Nat. eg Math. 

 Afh., 4. rijekke, b. 7, p. 74. 



Himantolophus with the height of the body equal to two-fifths of the 

 length, and the frontal ray provided with 11 tentacles (Ltitken). 



Habitat. — Sea off Greenland (known only from the remains of a speci- 

 men 23 inches long). 



CORYXOLOPIIUS.t 



Himantolophines of an abbreviated oval form, a dorsal of about 5 

 rays, and pectorals with about 17 rays each. 



'Oneirodes, 'ovEipu^rig, dream-like, in allusion to the small and almost covered eyes. 

 ] Himantolophus, Ifiag, uvTog, a thong, and 7io<pog, a tuft. 



t Corynolo2)ki(s. Kopvvr), t]q, " a stick with a knob at the end ", or club, and ?iO<j>og, a 

 tuft. 



