DISCUSSION OF SPECIES AND THEIR DISTRlRrilON. 451 



The scales on the eyed side are regularly cycloid with the luicleus some distance from 

 the posterior inargia and with numerous radiating- stria-. The gill rakers are quite charac- 

 teristic. 



CYCLOPSETTA FIMBRIATA, Goode and Bean. (Fisuro .3GS.) 

 Hemirhoiiihufifimhriatiin, GoODE aud Bean, Proc. U. S. Nat. Mas., viii, ISHfi, r>;il. 



Body ellii)tical; its height (lOli millimeters) nearly half the body ienotb. 



Scales cycloid, about 70 in the longitudinal series, '2~i or 2t! in the vertical series above 

 the lateral line, 31 below. The lateral line is slightly curved ovei- the jjcctoral, the length 

 of the arc of tiie curve contained .'i.^ times in its straight portion. Vertical tins not scaly. 



Length of head (61 millimeters) about ;?i times in standard length. Length of snout 

 (llA millimeters) 5:^ times in tliat of head. 



Mouth very large, with upper Jaw strongly curved, lower Jaw inciiuled. The length of 

 the maxiUary (30 millimeters) equals half the length of the head. The lower jaw extends 

 behind the vertical through the ]iosterior margin of the eyes; its length (36 millimeters, 

 equal to that of postorbital part of the head, and contained (! tiuu's in the total length) 

 Edge of mandible and margin of snboperculum provided with a pointed flap of thin integu- 

 mentary tissue. Gill rakers very short, tubercular; about !) on the anterior arch below the 

 angle. The upper eye is placed at a distance from the dorsal ])rofile eiiual 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 equidistant from the tip 

 of the snout and the margin of the upjier eye; it is in a very inconspicuous tube, provided 

 with a slender filament about one-third the length of the snout. The posterior nostril is 

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



Teeth uuiserial in bothjaw.s, some of tiie anterior ones in the upper jaw being much 

 larger than those following, while those in tlie lower Jaw are still larger than these. Some 

 of the teeth in each Jaw are depressiblc. 



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 (26 millimeters) 

 one-fourth the height of the body. Eighty rays compose the fin. 



The anal fin begins under the axil of the jiectoral. Its longest rays behind its middle, 

 their length (30 millimeters) greater than that of longest dorsal rays. It contains 60-61 rays. 



Caudal with middle rays produced, the length of the median rays (45 millimeters) 

 contained 4i in total length. 



The greatest length of the pectorals (30 millimeters) is contained 5J times in total 

 length. 



The ventral of the colored side is on tlie ridge of the abdomen, on a line with its mate, 

 which is slightly removed from the median line. Its distance from snout (56 millimeters) a 

 little more than one-quarter the length of the body. Its length (23 millimeters) equal to 

 half the length of median caudal lays. The ventral of the blind side is continued by 

 a thin membrane to the vent, which is slip-htly distant from the edge of the abdomen, and 

 behind the origin of the anal. 



Color, grayish-brown; the dorsal and anal fins each with two roundish dark blotches 

 upon their posterior halves, wliich are slightly larger than the eye. A siuular dark blotch 

 upon the middle of the caudal, sometimes with smaller blotches irregularly placed near its 

 outer margin. 



Pectoral, with a very narrow dark band near its base; the whole of its outer half is 

 marked by a dark blotch, reticulated and mottled witli lighter; the intervening portion is 

 pearly-white, with dark specks upon the rays. Blind side cream colored. 



D. SO; A. 60-61; P. 10; Y. 6; C. 16. 



The type specimen (Cat. No. 37330, U. S. N. M., 213 millimctors long to origin of mid- 

 dle caudal rays), was taken bv the Allxitroxs from station 2403, in 280 42' 30" N. lat, 85o 



