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.* 



Oneirodinse with oval form ; the 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 — Oneirodes Eschrichtii Liiikcn. Overs, over Dansk. Vidensk. Selsk. Forhandl., 1871, 

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



niMANTOLOPHINiE. 



Ceratiids with the body and head compressed, with moderate oblique 

 cleft mouth, the mandibular articulation under the eyes; branchiae in 

 pairs; branchial arches armed with deutigerous 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. 



IIIMANTOLOPIIUS.t 



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

 pectorals with about 12 rays each(?). 



Himantolophus Groenlandicus. 



18u7 — Himautolophus Groenlandicus Eeinhardt, Danske Vidensk. Selsk. Nat. og Math. 

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



Ilimantolophus with the height of the body equal to two-fi-fths of the 

 lengtb, and the frontal ray provided witli 11 tentacles (Lutken). 



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. 



*Ontirodts, 'oveipufiric, dream-like, in allusion to the small and almost covered eyes. 



ilJiniantolophus, l/aag, uvrog, a tliou^, and 'AoQog, a tuft. 



X Corynolophw, Kopvvrj, rjg, " a stick with a knob at the end or club, and Xo(f>og, a 

 tuft. 



