2812 Bulletin ^7, United States National Museum. 



widely spaced, black specks ; a dark vertebral streak, more or less of it 

 often consisting of 2 narrow lines; tips of caudal lobes often blackish; 

 lins otherwise unmarked. This species ditfers from closely allied sjiecies 

 in the following characters: From Stolvphorus htcidus, in the much longer 

 head, more compressed body, well-defined lateral stripe, and smaller eye; 

 from S. comprct<sus, in the longer liead and wider lateral band ; from S.pan- 

 amensis and S.miindrolus, in the much more numerous gill rakers, and the 

 more anterior i)Ositiou of the dorsal relative to the anal, the origin of 

 the anal being under the middle of the dorsal, while in S. panamenais the 

 origins of the two lins lie in the same vertical. Length 2 to l-> inches. 

 Panama. Many specimens. (Gilbert A- I'iersou.) (rasi/vf?;;., a rake, from 

 the long gill rakers.) 

 Stolephoriis rastralis, Gilbert & Pieeson, Fishes of Panama, MS. 1898, Panama. 



782(b). STOLEPHORUS MUXDEOLUS, Gilbert & Pierson, new species. 



Head 4.15 (4 to 4.25) ; depth 3.77 (3.40 to 4.25) ; eye 3.44 in head (3.12 to 

 3.70). D. 13 or 14; A. 33 (33 to 35) ; scales 36 (35 to 39). Dorsal and ven- 

 tral contours about equally and gradiuilly rounded from the middle region 

 of body to the tip of suout and base of caudal fin. Snout short, high, 

 compressed, blunt at tip, its length 1.8 in eye. Eye very large. Maxil- 

 lary broad, tapering to a sharp point, which reaches margin of gill open- 

 ing. Gill rakers 17 to 22 -f 21 to 24 ; the longest 1.5 to 2 in eye. Anterior 

 insertion of dorsal fin varying from a point midway between base of 

 caudal and middle of eye, to a point midway between the caudal and tip 

 of snout. In 10 examples its insertion is before that of the anal. Anal 

 fin long, averaging 33 rays, its origin beneath the anterior third of the 

 dorsal; length of base shorter than in S. 2>(t>i(i>iic>isis, being 3.04 in length, 

 while in the latter its length is contained 2.5 in length. I'ectoral long, 

 reaching well beyond the insertion of the veutrals, equaling length of 

 head behiud front of pupil; a large axillary scale; veutrals scarcely 

 reaching vent. Uniform light olive, with silvery reflections; a faiut, 

 narrow, silvery-gray lateral stripe, sometimes scarcely distinguishable; 

 sides of head plain silvery; upper margin of orbital rim black; dorsal 

 region blackish; a faint, narrow dark line on each side of the light mid- 

 dorsal streak; caudal slightly dusky; fins otherwise unmarked. This 

 species is closelj' allied to Stolephonts panamensis and S. romprcs.sus, but 

 may be distinguished from the former by its longer head, larger eye, 

 greater dejjth, fewer scales along tlie lateral line, and its much shorter 

 anal base; also l)y the much fainter lateral silvery stripe. The eye is 

 contained 14 to 16 times in length, excluding the caudal, while in S. 

 panainetisin the length contains the eye 16 to 20 times. From S. compressus 

 it differs iu the relative length of the head and maxillary. In S. mundeohis 

 the maxillary is contained iu the head 1.27 times (1.19 to 1.37); iu covi- 

 pressus 1.48 times (1.30 to 1.81). In miindeolus the head is contained 4.15 

 times in tJie length ; in compressus 4.44 times. Length 4 to 61 inches. 

 Panama; many specimens. (Gilbert.) {miindeolus, somewhat shining, 

 from mundus, neat or clean.) 

 iStolep)wnis mundeolun, Gilbert & Pieeson, Fislies of Panama, MS. 1898, Panama. 



