848 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



base of caudal ; membrane behind dorsal and anal extending nearly to 

 base of caudal. D. I, I, 4; A. 4; G. 8; P. 19. Greenland. 



(Kroyer. Naturh. Tidsskr. 1844, G39; Gunther, iii, 205.) 



470.— MA1VCAI.IAS Gill. 



(Gill, Proc. U. S. Nat. Mus. i, 227, 1878: type Ceratias nrmwscojms Murray. 



General cLaracters of Ceratias, but with the spinous dorsal reduced to 

 a rostral spine, and two fleshy claviform tubercles behind it. Pectoral 

 fins narrow, with about 10 slender rays. (Latin mancus, defective, " with 

 a quasi diminutive termination to correspond with Ceratias.''^) 



13®§. M. MraiaoscopEas (Murray) Gill. 



Uniform black. Anterior spine of first dorsal produced in a long- 

 filament, ending in a i^ear-shaped bulb, terminating in a semi-trans- 

 parent whitish spot, this spine originating on posterior j)art of head, 

 and reaching, when depressed, nearly to the tip of tail; far behind this 

 are tM^o short, fleshy tubercles, lying in a depression in front of second 

 dorsal. Teeth moderate, depressible. Skin everywhere with minute, 

 imbedded conical si)ines. Eyes very small, placed high on the middle 

 of th€ head. D. 1-3 or 4; A. 4; C. 8; P. 10. (Murray.) Deep seas; 

 taken at Madeira and off the coast of Southern ISTew England. 



(Ccrafias nranoscopus Murray, inWyville Thonipsou, The Atlantic, ii, 67, 1878; Gill, 

 1. c. 228; Goode, Proc. U. S. Nat. Mus. 1880, 469.) 



471.— ONSROOES Liitken. 



{Oneirodes Liitken, Overs. Kong. Dansk. Vidensk. Selsk. Forliandl. 1871, 56: type 

 Oncirodes eschrichtii Liitken.) 



Head and body compressed, oval, covered with smooth skin. Mouth 



moderate, almost horizontal; vomer with teeth. Gill arches unarmed; 



gills in 2J pairs. Spinous dorsal represented by a rostral spine, the 



basal element of which is procumbent and subcutaneous, and a second 



spine about midway between the rostral spine and the soft dorsal. 



Greenland. (o'ysj/jwJr^c, dream-like, in allusion to the small, almost 



covered, eyes.) 



1309. O. escliricBiti Liitken. 



Black; terminal half of the bulb of the cephalic spine whitish. 

 Cephalic spine with a bulbous termination, surmounted by slender 

 filaments, in several transverse rows. Caudal fin shorter than trunk, 

 without head. D. II-4. Deep sea, off Greenland. {GUI.) 



(Liitken, Dansk. Vidensk. Sclsk. Forh. 1871, 57; Gill, Proc. U. S. Nat. Mus. 1878, 

 218.) 



