THE DISCOBOLI. 41 



Cyclopterichthys ventricosus. 



Cydopterus ventricosus Pallas, 1769, Spicil. Zool., fasc. 7, p. 16, pi. 2, fig. 1-3, — 1831, Zoogr. 

 Ross.-Asiat., III. 74; Bonnat., 1788, Ichthyol., p. 28, pi. 20, fig. 66; Ginel., 1789, Syst. Liun., I. 1476; 

 Walb., 1792, Art. Gen. Pise, 487; Donud., 1798, Beitr., III. 816; Geoigi, 1801, Geogr.-Phys. Nat. 

 Besohr. Russ. Reichs, VII. (od pt.) 1967; Sonn., 1803, Hist. Poiss., V. 203 ; Sbaw, 1804, Gen. Zool., 

 V. 394; Turt., 1806, Syst. Nat. Linn., L 905; Cuv., 1817, R. An., II. 227, — 1829, R. An., IL 346, — 

 1836, R. An., I. 573; Rich., 1836, F. B. Araer., III. 263 ; Val., 1840, Cuv., R. An., ed. ill., Poiss. 501. 



Lepadogaster ventricosus Bl. Sohn., 1801, Systema, p. 3. 



Limpus ventricosus Stor., 1846, Synops. N. Amer. Fishes, 482. 



Cotylis ventricosus Gthr., 1861, Cat., III. 498. 



Cyclopterichthys glaber St., 1881, Ichth. Beitr., X. 14, pi. 8. 



Cyclopterichthys ventricosus J. & G., 1882, Bull. 16 U. S. Mus., 745. 



D. 10 ; A. 8-9 ; P. 20 ; C. 10. (Pall., C. ventricosus.) 



D. 9 ; A. 7; P. 20; C. 11. (St., C. glaber.) 



Body stout, tliick, short, smooth, abruptly compressed behind the body 

 cavity. Caudal portion nearly two fifths of the total length. Head about 

 one third of the length without the caudal, broad, depressed but convex 

 on the crown, blunt and broadly rounded on the snout. Mouth wide, 

 anterior, opening slightly upward, corner under the middle of the eye. 

 Teeth small, hooked, simple, in two series in front, and but one toward 

 the sides. Pallas says of the dentition : " Maxillarum margines ossei, denti- 

 culis minutis, curvulis, obtusiusculis, inordinatis et inasqualibus, passim gemi- 

 natis asperi ; quorum in superiore maxilla interiores niajores." Eye lateral, 

 its diameter contained about seven times in the length of the head. Dorsal 

 short, behind the abdominal chamber, its upper extremity extending behind 

 a vertical from the base of the caudal, margin rounded. Anal smaller than 

 the dorsal and opposed to it, though originating a trifle farther back. 

 Caudal subtruncate, rounded. Vent almost directly in the middle of the 

 total length. Disk subcircular, with a broad cutaneous margin. 



Brownish, with numerous scattered, small, rounded spots of darker. 



The following is the account of the anatomy given by Pallas: — 



" Pleura intus aterriraa. Acetabulo subjacent musculi quatuor robustissimi, contrac- 

 tion! et dilatationi ejusdem servientes. 



" Renes statim ad caput oriuntur e duobus lobis posterius ad spinam in unum coaliti, et 

 spinfe longitudinaliter incumbentes. Ureteres e posteriore parte duo, quorum quilibet ad 

 peculiarem vesicam rendit. 



" Vesica iirinaria gemina, in quovis alvi latere una, sine exemplo amplissima ; utraque 

 postice producta coalescit in (Jloacam comnaunem seu collum ano iasertum, arctissime clause ; 

 qui presso abdomine urinam cum impetu emingit. 



" Reliqua fere ut in Cottis quibusdam." 



JJah. — Kamtchatka ; Sea of Ochotsk. 



