110. CYCLOPTERIDyE - CYCLOPTERI-JIITHYS. 745 



their bases broad and procurrent; pyloric coeca numerous; vertebra? 

 12 + 10, the skeleton feebly ossified. Genera 2; species 4; inhabiting 

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

 ventral disk these fishes are enabled to attach themselves very firmly 

 to rocks or other objects. 



(Discoboli; group Cyclopterina Giinther, iii, 154-158.) 



a. Spinous dorsal wanting ; skin smooth or nearly so ....... CYCLOF-TERICHTHYS, 395. 



aa. Spiuons dorsal present, sometimes disappearing with age; skin tuberculate. 



CYCLOPTERUS, 396. 



395. CYCL.OPTERICHTHYS Steindachuer. 



(Steiudachuer, Ichth. Beitriige, x, 14, 1881: type Cyclopterichthys glabcr Steind. = 

 Cijclopterus ventricosus 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, sharp, in two rows 

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

 bony stay with the preopercle; gill-opening small, above the base of 

 the pectoral, which is broad and procurrent; ventral disk moderate, 

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

 anal, both well separated fiorn the small caudal, (xuxlo-rspot;, round- 

 fiuued; ^067, fish.) 



1142. C. veaata'BCOSUS (Steiudachncr) 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. 

 I), i); A. 7; P. 20; C. 11. L. 12 inches. (Steindaclmer :) Okhotsk Sea, 



northward. 



(Cyclopterus ventricosus Pallas, Spicilegia Zool. vii, 15, t. 2, about 1770: (CotyUxf) ren- 

 tricosiis Guuther, iii, 498: Cyclopterichthys glaber Steind. Ichth. Beitriige, x, 14, 1881, 

 taf. viii.) 



1143. C. stelleri (Pallas) J. & G. 



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, unequal; eyes small, high; gill-opening 

 reduced to a round foramen. Dorsal fin commencing on the middle 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.) 



(Cyclopterus stelleri Pallas, Zoogr. Ross.-Asiat. iii, 73. 1811: (Cotylis?) stelleri Gtin- 

 ther, iii, 499.) 



