2144 Bidletin //, United States National Mitseum. 



Paraliparis ropei, Goode & Bean, Oceanic Ichthyology, 279, fig. 253, 1896, Gulf Stream, at 

 Albatross Station 2232, in 39° 12' 17" N., 72° 9' 30" W., in 520 fathoms, (Type, No. 

 35637.) 



2477. PARALIPARIS DACTTLOSUS, Gilbert. 



Head 5; depth 6^. D. about 56; A. about 46. Shape of head much the 

 same as in F.nlochir, the suout broadly rounder, slightly, if at all, over- 

 lapping the horizontal mouth, and the cheeks vertical. Occiput and nape 

 not conspicuously swollen. Lower jaw included; maxillary reaching 

 vertical behind middle of pupil, 2§ in head. Eye large, 3 in head; Ijony 

 interorbital space 5; snout ii. Gill opening a narrow slit extending to 

 opposite third or fourth pectoral ray, its length equaliug diameter of 

 pupil. Teeth acute, in narrow bands in each jaw, each baud made up 

 of oblique rows. Opercle produced iuto a pointed lobe, which is sepa- 

 rated from upper pectoral ray by a distance equaliug diameter of pupil. 

 Dorsal beginning slightly behind upper base of pectorals; pectorals 

 inserted lower than in P. nlocMr, the upper ray on a level with or below 

 margin of pupil; as iu P. ulochir, the 2 lobes joined by a series of about 

 8 more -widely spaced rays, none of the rays is free; anterior ends of the 

 fius meeting under throat at a point vertically below the pupil; pec- 

 toral rays 30, of which about 10 constitute the lower lobe; upper X'ays 

 extending beyond front of anal, but the lower lobe apparently much 

 shorter. Vent anterior in position, its distance from pectoral syuiphysis 

 i its distance from front of anal. Each of the types has lost the epider- 

 mis. In this condition the head and body are light or slightly dusky, 

 except the eyes, opercles, gill membranes, and abdomen, which are black; 

 gill cavity and mouth black; probably black everywhere in life. Very 

 close to P. ulochir, but with the upper insertion of pectoral much lower, 

 opposite the lower margin of pupil, and the head and body much more 

 slender and elongate. Length about 3^ inches. Oif Santa Cruz, Cali- 

 fornia, in deep water, (daciylosus, docHrvXo?, fingered.) 



Paraliparis dactylosus, Gilbert, Rapt. U. S. Fish Comm. 1893 (1896), 469, pi. 34, fig. 2, off 

 Santa Cruz, California, at Albatross Station 3112, in 296 fathoms. 



Subgenus HILGENDORFIA,* Goode & Bean. 

 2478. PARALIPARIS IJLO(!HIR, Gilbert. 



Head about 5 in length, equaling the depth. D. about 65; A. about 60. 

 Snout broad and short, very slightly projecting beyond the mouth, the 



*The subgenus Hilgendorfia, Goode & Bean, is thus defined: " Liparids with large, 

 high, compressed head, whose bones are exceedingly thin, cavernous jaws, even in front. 

 Vertical fins represented by broad median folds, confluent at the posterior end of the body, 

 where the caudal is represented by 2 or 3 exceedingly fine, slender, terminal filaments. 

 Pectoral very large, broad based, with membranes fringed posteriorly and having several 

 of the lower rays free, though not forming a distinct jiortiou of the fin. No ventral disk. 

 Vent far advanced, opposite hind margin of orbit. Gill opening as in Arnitra. The type 

 described by Giinther is only 60 mm. in length, and he remarks concerning it that it is 

 uncertain whether it represents a form in which embryonic characters are persistent, or 

 merely an early stage of development. Its peculiarities seem sufiicient to warrant its 

 being'set apart for further study before it is merged with Paraliparis. It is named for 

 Dr. Franz Hilgendorf, of the Ivoyal Zoological Museum, Berlin." (Oceanic Ichthyology, 

 280, 1896.) 



