746 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
306.— CYCL<OPTEKUS LiuuiEus. 
{Lumjms Cuvier.) 
(Artedi; Linuseus, Syst. Nat.: type Cyclopterus himpus L.) 
Spiuoiis dorsal present, sometimes disaitpeariug with age; skin thiclv, 
armed with series of bony tubercles; other characters of the genus 
included above, {v.byloz^ circular; r-tpby^ tin; from the circular ventral 
disk.) 
a. Dorsal spines not disappearing with age; gill-opening a small slit on level of eye; 
ventral disk large. {Eiimicrotremus'^ Gill.) 
1141. C. spiiioSHS Miiller. 
Color olivaceous, the skin between the plates thickly punctate. Body 
orbicular, cuboid anteriorly; base of spinous dorsal and body behind 
vent abruptly compressed; teeth in narrow bands; gill-openings on a 
level with eye, slightly narrower than orbit. S]>inous dorsal not hidden, 
covered with rough tubercles, similar to those on body, but smaller; 
width of ventral disk slightly less than its length, and somewhat less 
than length of head. Body covered with irregular roundish conical 
plates, varying much in size, some of the larger with a central point, 
turned backward; all the plates with small tubercles and slender llex- 
ible prickles; small i)lates along bases of all the fins; a series of (I large 
])lates extending backward from above eye to opposite the interval be- 
tween dorsals; a series of 5 on each side of middle of iuterocular space 
from snout to nai)e, these increasing much in size posteriorly; a series- 
of 3 along oi)ercular margin; along base of spinous dorsal, a series of 
4, not connected with that of interorbital space; a single large plate on 
each side of the interval between dorsals; two longitudinal series of 4 
large plates each, beginning above base of pectorals and behind gill- 
slits, terminating under the space between dorsals; the largest plate on 
body is immediately behind axil of pectoral ; a smaller one below^ it, and 
two others between it and origin of anal ; two series of smaller plates 
below eye; many small plates interposed between the series of large 
ones; very small idates on under side of head and middle of tail; no 
])lates between ventral disk and vent; none in axil of pectorals. Head 
3; depth nearly 2. D. VII-ll; A. 10; C. 10. Alaska to Iceland, south 
*Gill, Proc. Acad. Nat. Sci. Pliila. 1804, 190: type Cudoplerus spinosus Miill. 
{evpiHfjoi, very small; Tptjficx, aperture, from the small gill-opeuings.) 
