218 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



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

 intermediate hetiireii the firat and the dorsal Jin; soft dorsal with about 

 4 rays 5 and without pyloric cceca. 



ONEIRODES." 



OneirodiniB with oval form ; tlie skin naked; the vomer dentigerous; 

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

 der filaments in several transverse rows. 



Oneirodes Eschrichtii. 



1871 — Oueirodes Eschrichtii Liitken, Overs. overDansk. Vitlensk. Selsk, Forhandl., 1871, 

 pp. 57-74 ; res. fr., pp. 9-18, pi. 2. 



Oneirodes with the terminal element of the cephalic spine ratber 

 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; branchiai iu 

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

 nous dorsal represented only hy 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 Groenlandicus. 



1837 — Ilimautolophns Groeulandicus Beinhardt, Danske Vidensk. Selsk. Nat. og Math. 

 Afh., 4. raekke, 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 (Liitken). 



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

 men 23 inches long). 



CORYNOLOPHUS.t 



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

 rays, and pectorals with about 17 rays each. 



*Ontirodcs, 'oveipudj^g, dream-like, in allusioa to the small and almost covered eyes. 

 i Himantolophus, l/xdg, avrog, a thons, and 7M<i>0Q, a tuft. 



X Corynolophiis, Kopvvr}, rjc, " a stick with a knob at the end ", or club, and Tiocpog, a 

 tuft. 



