274 DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



ginate, some of the lower rays being produced; tail diphycercal. Caudal elongate, distinct 

 or confluent with dorsal and anal. Stomach siphonal, and intestine elongate. 



KEY TO THE GENERA OF LIPARIDID^E. 



1. Ventral disk present _ Liparidin.e 



A. Caudal more or less distinct. Teeth tricuspid. PseudobrancMse. 



1. Vertebrae less than 40. A strong curved frontal ridge, convex in front, crossing inter- 



orbital space Liparis 



2. Vertebra) more than 45. Frontal regions broader, and without prominent transverse 



ridge [Carelipakis] 



B. Caudal indistinct, tenuous. Teeth simple (in adults). 



1. Skull higher than in Liparis; frontal ridge moderate Careproctus 



2. Ventral disk absent Amitrin.e 



A. Pseudobrauchia? present. 



1. Pectoral simple, with (six) lowest rays prolonged Amitra 



B. Pseudobranckia absent. 



1. Pectoral in two distinct lobes Pakaliparis 



2. Pectoral fringed posteriorly, and with (eight) lowest rays free, but not forming distinct 



lobe.. HlLGEXDORFIA 



LIPARIS, Artedi. 



Liparis, Artedi, Synonimia Piscium, 1788, p. 117.— Scopoli, Introductio, 1777.— Cuvier, Regne Animal, ed. 



i, 1817, p. 227.— Guxther, Cat. Fish. Brit. Mas., in, p. 158.— Jordan and Gilbert, Bull, xvi, U. S. Nat. 



Mus.,p. 738.— Garmax, Discoboli, 1892,45. 

 Xcoliparis, Steindachner, Ichth. Beitrage, in, 1875, 54 (type, L. mucosas). 



Body tadpole-shaped, subcylindrical anteriorly, compressed and tapering posteriorly, 

 enveloped in smooth skin, usually somewhat loose. Head short, broad; snout short, blunt; 

 mouth horizontal, with lower jaw included. Teeth numerous, in cardiform bands; usually 

 tricuspid on interinaxillaries and mandible, simple on pharyngeals. Dorsal and anal fins 

 with rays feeble, flexible, those anterior scarcely differentiated ; more or less confluent with 

 caudal. Pectorals broad, eniargiuatc, procurreut under throat, some of the lower rays 

 produced. Ventrals transformable into a well-developed disk on the breast, its front below 

 or behind the middle of the head, about midway between sucking-disk and anal fin. Pseu- 

 dobranchia; present. 



LIPARIS LINEATUS, (Lepeculn t ),Kr6yer. 



Cyclopterus liparis, LixN-EUS, Syst. Nat., ed. xn, 1766, i, 414. 



Liparis liparis, Cuviep, Rogue Animal, ed. I, 1817, ii, 227. — GCntiier, Chalk Rep., xxn, 1887, 67.— Garmax, 



Discoboli, 57. 

 Cyclopterus lineatus, Lepechin, Nov. Com. Petropok, xvm, 1773, 522, pi. v, figs. 2, 3. 

 Liparis lineatus, KrOyeb, Nat. Tidsskr., n, 1847, 284. — Jordan and Gilbert. Bull, xvi, U. S. Nat. Mus., 



742. — Collett, Norges Fiske, 1875, 65. 

 Liparis vulgaris, Fleming, Phil. Zobk, 1822, 387; British Auimals, 1828, 190.— GCntiier, Cat. Fish. Brit. 



Mus., in, 159. — Kroyer, Nat. Foren. Vid. Med., 1860-61, 243. — Collett, Norges Fiske, 1875, 65. — 



Goode and Bean, Bull. Essex Inst., xi, 1879, 11. 

 Liparis barbatus, Ekstrom, Vet. Akad. Handl., 1832, 168, pi. v. 

 Lijmris stellatus, Malm, For. Sk. Nat., 1865, 412. 

 Liparis Ekstromi, Malm, 1v<: eit. 



Body thick, covered with thin loose skin, its height two-sevenths of its length ; head 

 obtuse, with swollen nape, its length one-fourth that of the body ; snout broad, not depressed ; 

 lips thickish; posterior nostril tubular. Diameter of orbit one-seventh length of head. 

 Gill-openings vertical slits surpassing root of pectoral; no pseudobranchiaj. Tail truncate 

 at base of caudal. Dorsal and anal confluent with caudal. Ventral disk rather longer than 

 broad, half length of head, its margin with about 13 papillae. 



Radial formula: D. 33; A. 28. 



Color, yellowish, striped with dark brown or purplish; the color very variable. 



Giinther records the capture of a specimen, probably of this species, from the cruise of 



