100 U.S. NATIONAL MUSEUM BULLETIN 2 02 Vol. 2 



amined. In the various other species of the subgenus Negostegastes 

 Whitley, into which imparipennis fits (by virtue of its XII dorsal 

 spines, the outline of the dorsal fin, shape of body, and kind of teeth), 

 the number of gill rakers on the lower part of the first gill arch ranges 

 from 10 to 14. We do not believe this slight difi'erence is sufficient 

 to warrant placing imparipennis in a separate genus. 



ABUDEFDUF LACRYMATUS (Quoy and Gaimard) 



Plate 87,B 



Glyphisodon lacrymatus, Quoy and Gaimard, Voyage autour du monde . . . 

 sur . . . VUranie, et la Phzjsicienne, Zoologie, p. 388, pi. 62, fig. 7, 1825 (type 

 loealit.v, Guam). 



SPECIMENS STUDIED 



Bikini Atoll: 17 stations, 207 specimens, 15 to 78 mra. in standard length, 



Eniwetok Atoll: 1 station, 1 specimen, 62 mm. 



Rongelap Atoll: 7 stations, 171 specimens, 17 to 75 mm. 



Rongerik Atoll: 3 stations, 45 specimens, 23 to 76 mm. 



Likiep Atoll: Univ. Washington, 1 lot, 19 specimens, 48 to 68 mm. 



Description. — Dorsal fin raj^s XII, 16 or 17; anal rays 11,13 or 14; 

 pectoral tuts ii,18, scale rows from upper edge of gill opening to base 

 of middle caudal rays 26, with 3 from lateral line to base of dorsal 

 (not counting those of dorsal fin sheath), 10 from lateral line to origin 

 of anal; upper part of lateral line with 19 to 22 tubular scales; gill 

 rakers 9 or 10+1 + 11 to 14, totaling 21 to 23. 



Depth of body 1.8 to 1.9; head 2.8 to 3.3; both in standard length. 

 Snout 3.3 to 4.3; eye 2.6 to 3.5; least preorbital wddth 0.8 to 11.2; 

 length of upper jaw 3.4 to 3.9; postorbital part of head 2.5 to 2.7; 

 interorbital width 3.0 to 3.3; depth of caudal peduncle 1.9 to 2.0; 

 length of pectoral fin 0.9 to 1.1; of pelvics 0.8 to 1.0; of longest dorsal 

 spine (12th) 1.5 to 2.3; of upper caudal ray 0.7 to 0.8, of lower caudal 

 ray 0.9 to 1.0; all in length of head (tip of snout to hind margin 

 opercle). Depth of caudal peduncle in its length 1.0 to 1.1; angle of 

 snout profile with lengthwise axis of body 50 to 60 degrees, snout 

 profile convex. 



Teeth of jaws in single row long, slender, close set, compressed, 

 truncate, those of middle of jaws with shallow dent; bones of orbital 

 and opercle ail entire; preorbital naked, suborbital scaled; spines of 

 dorsal fin gradually increasing in height, with the last being longest; 

 angles of soft dorsal and anal pointed; caudal forked, low^er lobe 

 angular, shorter; upper lobe pointed, longer. 



Color in alcohol. — Lips, top of snout and interorbital area blackish, 

 body light brown, dark brown, or blackish with numerous small, 

 rounded, usually black-bordered white or bluish spots scattered over 

 posterior part of head, back, and upper sides (these spots sometimes 

 indistinct); scales usually Avith very dark narrow borders, center of 



