DISCUSSION OF SPECIES AND THEIR DISTUlliUTION. 335 



paneled at its tij); its length (13 millimeters) more than ball' that of head. Length of man- 

 dible (15 millimeters) equal to greatest height of body. Jaws, vomer, and palatines witli 

 narrow bauds of villiform teeth, uone of which are enlarged. Gill-rakers, 15 on anterior 

 arch below the angle, 3 rudimentary ones above. 



The anterior pair'of nostrils are nearly on top of the snout, and somewhat nearer to 

 its tip than to the eye, separated by a very narrow space, and placed immediately in front 

 of the middle of the eye. Behind each posterior nostril is a strong spine projecting out- 

 ward and backward. Pores of the head arranged much as iu Baxsozetus. 



Scales minute. Lateral line not clearly to lie made out. Three rows of minute jtores 

 on each side dorsal, median, and ventral, beginning near the head and extemling well to- 

 ward the extremity of the tail. 



Dorsal origiu slightly behind vertical through pectoral base; its distance from the 

 snout (l-'o millimeters) nearly times in length of body. Its rays are moderately long, the 

 longest about as long as the suout (one-fourth of head), and very numerous. 



Anal origin iu vertical from twenty-second or twenty-third dorsal ray; its distance 

 from the snout (-11 millimeters) 3.', times in length of body. Its rays about as long as those 

 of the dorsal. 



Tectoral imperfect, its length in the type equals one-half that of the head. 



Ventral a bifid tilameut, placed close to tlie humeral symphysis, well in advance of the 

 pectoral; its length (15 millimeters) equal to height of body. Distance from origin of ven- 

 trals to veut (22 mdlimeters) uearly eipial to length of head, The ventral does not reach to 

 the vent by a distance equal to length of snout. 



Color, blackish brown. 



The tyi)e (No. 35025, U.S.N. M.) is 153 millimeters in length; it is from Albatrons 

 Station 223U, N. lat. 38° 27', W. Ion. 73° 02', at a depth of 1,108 fathoms. 



PENOPUS, Goode and Bean, n. g. 



Body sljout in front, tapering behind. Tail uot greatly exceeding the lengtli of the 

 rest of the fish. Head scaly, thick, its toj) surface Hat, with depressed and moderately 

 projecting snout. A pair of minute postnasal sjiines; a strong and much cm-ved spine on 

 the operculum ; several weak spines at the angle of the i)re.operculuni, and several at the 

 posterior angle of the suboperculum. Mouth moderately large, the lower jaw included. 



Several narrow slit-like pores along the margin of the preorbital and suborbital. 

 Two minute pores on the under surface of the mandible near its symphysis, and not far 

 behind them two long slit-like pores. 



The anterior nostril is iu a long slit, the posterior is larger, oblong in shape, and half 

 concealed by a fold of skiu. Eye small. The teeth appear only as minute asperities; the 

 intermaxillary band mucli wider in front than behind. Mandibulary band imrrow throngh- 

 out. Vomerine band very narrow V-shaped. Palatines in a long broad baud. Gill-open- 

 ings wide, deeply (deft iu front, narrowly joined to the isthmus. Brauchiostegals 8. No 

 pseudobranchia^ The giU-rakers arc long and slender; not numerous. Gill-lamina' moder- 

 ately long. A long slit behind the fourth gill. Scales very small. Lateral lines, three. 

 Caudal fin consisting of few rays, well dilierentiated from the dorsal and anal. Dorsal 

 beginning not far behind the head. Ventrals slightly iu advance of the pectorals and 

 composed of two rays, united by membrane, which forms a margin aroun<l them. 



Pectoral normal; several of its upper rays simple. The vent is not much in advance 

 of the middle of the total length. 



This genus agrees with roroyadm in nearly every respect except in the scarcity of spines 

 on the head and in the structure of the ventrals. roror/udus has the ventrals c()mi)osed of 

 two distinct rays which are separated throughout their entire length, but in Foiopus the 

 two rays are inclosed in a membrane which connects them and forms a margin around 

 them. In I'orofindus, also, the suboperculum has a smooth margin and the opercular spine 

 is weaker than iu reno2)us, and it is not curved. 



