1885 -] PROCEEDINGS OF UNITED 8TATES NATIONAL MUSEUM. f)!)! 



The distance of the ventral from the suout is contained aboui^ 4^ 

 times in total length of body ; its length equals twice the diameter of 

 the eye. Its distance from the anal equals twice the diameter of the eye. 



Color, light-brown, with six or seven cross-bars of slightly darker 

 hue. Blind side light. 



Hemirhombus finibriatus, n. s. 



The length of the individual described, to origin of middle caudal rays, 

 is 213 millimeters. 

 Body elliptical; its height (102""") nearly half the body length. 

 Scales cycloid, about 70 in the longitudinal series, 25 or 2G in the 

 vertical series above the lateral line, 31 below. The lateral line is 

 slightly curved over the pectoral, the length of the arc of the curve 

 contained 3^ times in its straight portion. Vertical fins not scaly. 



Length of head (61""") about 3^ times in standard length. Length 

 of snout (11A'""0, 5i ti-iies in that of head. 



Mouth very large, with upper jaw strongly curved, lower jaw included. 

 The length of the maxillary (30""™) equals half the length of the head. 

 The lower jaw extends behind the vertical through the posterior margin 

 of the eyes; its length (30""") equal to that of postorbitcil part of the 

 Isead, and contained 6 times in the total length. Edge of mandible and 

 margin of suboperculum provided with a pointed flap of thin integu- 

 mentary tissue. Gill-rakers very short, tubercular; about 9 on the an- 

 terior arch below the angle. The upper eye is placed at a distance from 

 the dorsal profile equal to half its own diameter, which is a little more 

 than one-fifth the length of the head, and is equal to that of its mate. 

 Eyes in the same vertical and separated by an interspace equal to one- 

 fourth the orbital diameter. Interorbital ridge low. 



Nostrils on the line of the interorbital ridge; the anterior is equi- 

 distant from the tip of the suout and the margin of the upper eye; it is 

 in a very inconspicuous tube, provided with a slender filament about 

 one-third the length of the suout. The posterior nostril is separated 

 from the anterior one by a space equal to one-fifth the length of the 

 snout. 



Teeth uniserial in both jaws, some of the anterior ones in the upper 

 jaw being much larger than those following, while those in the lower 

 jaw are still larger than these. Some of the teeth in each jaw are de- 

 pressible. 



The dorsal fin begins on the snout, in advance of the nostrils; the 

 first ray longer than the second. The longest rays are behind the 

 middle of the fin, their length (20"^'") one-fourth the height of the body. 

 Eighty rays compose the fin. 



The anal fin begins under the axil of the pectoral. Its longest rays 

 behind its middle, their length (30""") greater than that of longest dor- 

 sal rays. It contains 60-01 rays. 



Caudal with middle rays produced, the length of the median rays 

 (45""") contained 4^ in total length. 



