DISCUSSION OF SPECIES AND THEIR DISTRIBUTION. 275 



the Porcupine, in ISO fathoms, north of Shetland. The form to which he refers is doubtless 

 that known to American students as L. lineata. 



This species was often taken by the Fish Commission vessels off the south coasl of New 

 England, in 30 to 60 fathoms, parasitic in the shell of a large scallop, Pecten tenuicostatus, 

 iu company often with a crab of the genus Pinnotheres, closely related to the '• oyster crab." 



CAREPROCTUS, Kroyer'. 



Careprortii.i, Kroyer, Naturh. Tidsakr., I, 257, 1862 (type, Liparis Reinhardti, Kroyer). — Garman, Discoboli, 

 1892, 72. 



Liparidoids with body elongate, covered with thin lax skin, translucent. Mouth oblique, 

 with projecting lower jaw. Teeth simple, hooked (tricuspid in young). Ventral disk small, 

 under head, the vent a little behind ventral disk, but far iu front of anal fin. 



Garinan shows that the head of Gareproctus is higher posteriorly than in Liparis; the 

 body deeper in front of the dorsal fin; the caudal region longer, slenderer, more tapering; 

 the dorsal and anal having more rays, and more completely joined with caudal; the ventral 

 disk reduced in size ; and the suborbital process less developed. 



CAREPROCTUS GELATINOSUS, (Pallas), Kroyer. 



Oyolopterw gelatinosus, Pallas, Spicilegia Zoologica, vn, 1769, 19, pi. in, tig. 1. 



Liparis gelatinosus, Cuvier, Regno Animal, ed. 1, 1817, n, 227. — Gunther, Cat. Fish. Brit. Mus., in, 163; 



Challenger Report, xxn, 1887, 57. — Reinhardt, Oversigt, etc., 1844, lxxvii. 

 Careprocttis gelatinosus, Kroyer, loc. cit. — Jordan and Gilbert, Bull, xvi, U. S. Nat. Mus., 740. — Garman, 



Discoboli, 76. 

 Liparis Reinhardti, Kroyer, Naturh. Tidsskr., i, 252. 

 Careproctus Eeinhardti, Kroyer, Naturh. Tidsskr., I, 1862, 252.— Collett, Norsk. Nordh. Exp., Fiske, 57, pi. 



ii, ligs. 15, 16. 



Ventral disk very small, supported by a bilamellate cartilage descending from the 

 throat; vertical fins continuous. Body oblong, compressed, semitransparent, soft, and gelat- 

 inous; head thick, flat above; cleft of mouth nearly vertical, as in TJranoscopus; a series 

 of pores along upper lip; jaws, palate, and pharynx rough with teeth; skeleton very weak. 



Radial formula: D. 50; A. about 45; C. 6; P. 30. C;eca 48. Vertebne 64. 



Rose-colored with vertical fins violet; gill cavity black. (Giinther.) 



An Arctic circumpolar species, first described from the* North Pacific (Bering Strait), 

 afterwards found on the Greenland coast, and recently discovered by the North Atlantic 

 Expedition about Jan Mayen and Bear Island, and off Arendal, at depths varying between 

 263 and 638 fathoms; also found in the Kara Sea. 



Gareproctus spectrum, Bean, from Alaska (Proc. U. S. Nat. Mus.. xin, 40), is an allied 

 form. 



CAREPROCTUS RANULA, Goode and Bean. (Figures 251 and 251 A, B.) 



Liparis ranula, Goode and Bean, Proc. U. S. Nat. Mus., n, 1879, 46.— Jordan and Gilbert, Bull, xvi, U. S. 

 Nat. Mus.. 712. 



A species with body thick, subcylindrical anteriorly, rapidly tapering to the tail, cov- 

 ered with a thick lax integument; its greatest height (.25) equals the length of the head 

 and is one-fourth of the total length of the body without caudal. 



Head somewhat tumescent at the nape; its height (over the ventral disk and eyes) con- 

 tained something over six times iu the length of the body; its greatest width (.18) very 

 Brightly greater and equaling twice the width of the ventral disk. Snout broad, with promi- 

 nent vertical profile; its length about one-fourth that of the head. Cleft of the mouth hori- 

 zontal, not extending to perpendicular from the anterior margin of the orbit. Lips covered 

 with thick lax skin, the upper jaw extending beyond the lower. 



Length of the upper jaw about one-third of length of head; that of mandible slightly 

 greater than length of ventral disk. Bach jaw armed with a band of villilbrm teeth: tongue 

 thick, obtuse. Eye is lateral, not interfering with the upper profile of the head; its diame- 



