DISCUSSION OF SPECIES AND THEIR DISTRIBFTION. 61 



Between the lateral line and the origin of the dorsal are(i.i scales, the origin of the ventral 

 6. The greatest length of the head to the end of the tlexible flap of the opercuhini sliglitly 

 exceeds onefonrth of the body length, and is itself slightly more than 4 times tlie lengtli of 

 the snout. The longitudinal diameter of the orbit is 4 times that of the interorbitalspace 

 and enters 3 in length of head. The maxillary, broad and flattened posteriorly, is in length 

 one-tenth of the body, and extends back to perpendicnlar from the anterior margin of the 

 pupil. The articulation of the mandible is in advance of the posterior tip of the uuixillary 

 its length slightly greater, and it protrudes beyond the snout, when the mouth is open, a 

 distance greater than the width of the interorbital area. When the mouth is closed its tip 

 still projects noticeably. 



The dorsal fin is located almost midway between the snout and the adipose dorsal. Its 

 height is almost eiiual to that of the ventral. The adipose dorsal is over the middle of the 

 anal, its length half the diameter of the orbit. 



The distance of the anal from the snout is about three-fourths of the body length. Its 

 length of base is equal to the length of the snout; its height to that of the middle caudal 

 rays. The caudal is furcate. The ])ectoral is long, subfalcate, inserted close to the bran- 

 chial cleft, its tip extending to the fourteenth or fifteenth scale of the lateral line, its length 

 twice that of the mandible. 



The ventral is located two-fifths of the way from the snout to the base of tliecaiulal 

 and directly under the middle of the dorsal. 



Eadial formula: D. 11+1; A. 8; (J. 10; P. 17 or 18; V. i) or 10; L. lat. about 48. 



Color grayish mottled with brown, scales metallic, silvery. 



Specimens were obtained by the Fish Hairlc in five localities ranging in depth from 101 

 to 156 fathoms, and by the Albatross from eleven staticms at depths of from So to 1G7 

 fathoms, 



/7. cMhjheius is not identical with C. Af/asslzii, but is well separated by the smaller eye, 

 longer, more conical snout, lower, more terete body, and larger scales. It closely resembles 

 it, however, in general form. Dr. Giinther's diagnosis of C. Affassisii in the Challenger 

 volume more nearly api)lies to G. chali/beiiis, and his figure is a-p])arently of 6'. ehalyheim. 



C. productus, Giinther, was obtained oh' the Fiji Islands, at a depth of .'51.') fathoms. 



G. niffripinitis, Giinther, is known only from a single individual, taken by the Ghallenger 

 ofl:" Twofold Bay, at a depth of 120 fathoms. 



CHLOEOPHTHALMUS TRUCrLENTUS, Goode and Bean, u. s. (Figure 72.) 



Body subterete, sonn^wliat com])ressed, its height 5i in its lengtii, its width abcmt S. 

 The least height of the tail is contained about li;^ in the greatest height of the body at the 

 insertion of the doisal. Scales moderate, cycloid, arranged in regular transverse rows, 

 overlapping in such manner as to resemble oblifjue plates on the sides. The lateral line is 

 rather inconspicuous, containing between 40 and r>0 scales (on account of denuded condition 

 of body, an accurate enumeration can not be made). There are about (J scales t)etween 

 the lateral hue and the origin of the dorsal, and (J or 7 between it and the ventral. The 

 greatest length of the head from the tip of the projecting lower jaw is a little moi'e than 

 one-third of the length of tlie body, and is contained -h times in the length of the snout. 

 The lower jaw projects beyond the tip of the snout a distance equal to one-i'ourth the length 

 of the snout. The diameter of the orbit is nearly equal to that of the snout, and about one- 

 third the length of the head. The width of the interorbital space is contained twice in the 

 longitudinal diameter of the orbit. Tlie maxillary is broad and flattened jtosteriorly, is con- 

 tained about 8 times in the length of the body, and does not reach to the perpendicular from 

 the anterior margin of the orbit. The insertion of the dorsal is midway between tlie ti]) of the 

 snout and the adipose dorsal. Its height is greater than the lengtii of the ventral, wliicii is 

 equal to the greatest height of the body. The adipose dorsal is over the middle of the base of 

 the anal, its length two-fifths of the diameter of the orbit. 



The distance of the anal from the snout is about three-fourths of the body's length; the 



