no. CYCLOPTERID.E — CYCLOPTERIJIITHYS. 745 



tbeir bases broad and procurrent; pyloiic copca nuiuoioiis; vertebra' 

 ]li + l(I, the skeleton feebly ossitied. Genera 2; species 4; iuliabitin;^' 

 the northern seas of both hemispheres. By means of the adhesive 

 ventral disk these fishes are enabled to attach themselves verj' firmly 

 to rocks or other objects. 



{DiNcoboli ; group Ciidopi(;riiia Giiutlicr, iii, 154-158.) 



«. Spinous dorsal wautiu<>;; skin smooth or nearly so Cycloptekichtiiys, 3%. 



aa. Spinous dorsal present, sometiuies disappearing with age; skin tuberculate. 



Cycloptkrus, 396. 



395.-CYCI.OPTERICIiTIIYS Steindachner. 



(Steiudachncr, lehth. Beitnige, x, 14, 1831: type Cycloptcriclifhi/s f/lahrr Steind. = 

 CjivJopftnts vcniricosns Pallas.) 



Body short and thick, rounded, covered with thick smooth skin, des- 

 titute of bony tubercles (or nearly so?); tail slender, compressed, the 

 body abruptly contracted to its base; head broad, obtuse; mouth ob- 

 lique, the lower jaw prominent; teeth rather small, sharj), in two rows 

 anteriorly; pseudobranchine large; gills 3^; suborbital connected by a 

 bony stay with the i^reopercle; gill-opening small, above the base of 

 the pectoral, which is broad and ]>rocurrent; ventral disk moderate, 

 fringed. Dorsal short and high, of soft rays only, opposite the short 

 anal, both well separated from the small caudal, {/.'jxhi-zspd!;, round- 

 linned; r/jj'^, fish.) 



1142. C VCntl'flCOSUS (Steindachner) .J. &, G. 



Brown, with numerous round dark spots. Head broader than long, 

 the greatest depth a little less than its length; eye small, round, 7 in 

 head, the maxillary extending to below its middle. Head 3; depth 2i. 

 D. 1); A. 7; P. 20; 0. 11. L. 12 inches. {Steindachner:) Okhotsk Sea, 

 northward. 



(Cjfcloplcruii ventricosuH Pallas, Spicilegia Zoiil. vii, 15, t. 2, about 1770: {Cotylixf) rcn- 

 tricoHHn Giiuther, iii, 498: Cijclopterichthyb (jlabtr Steind. Ichth. Beitriige, x, 14, 1881, 

 taf. viii.) 



iBf :j. c. sioiioi-i ';Paii!is) .1. & n. 



Color blackish. Body ovate, smooth ; a single series of osseous 

 tubercles along the middle of the back to the origin of the dorsal fin; 

 lower jaw longest; teeth small, une(|ual ; eyes small, high; gill-opening 

 reduced to a roun<l foramen. Dorsal tin commencing on the mi<ldle of 

 the back and extending to near the base of caudal; anal ending oppo- 

 site dorsal. Peter and Paul's Harbor, Bering's Sea. {Pallas.) 



(Ci/dopterus atcUeri Pallas, Zoogr. Poss.-Asiat. iii, 73, 1811: {Cotylia^) sIcUeri Giin- 

 ther, iii, 499.) 



