1G82 Bulletin 47, United States National l\Iiisemn. 



Fomacanthodes zonipectus, Gill, Proc. Ac. Nat. Sci. Phila. 1862, 244, San Salvador. 

 Pomacanthiis crescentalis, Jordan <fc Gilbert, Proc. U. S. Nat. Mus. 1881, 358, Mazatlan; 



young. (Type, No. 28139. Coll. Gilbert.) 

 Pomacanthvs zmtpectus, Jordan & Gilbert, Proc. U. S. Nat. Mus. 1882, 376 ; Eigenmann 



& Horning, I. c, 14, 1887. 



66i. HOLACANTHUS, Lacf'p(de. 



(Catalineta-s.) 



Holacanthus, Lac^pivDE, Hist. Nat. Poise., IV, 525, 1803 (tricolor). 

 Gvnicanthus, Swainson, Clasa'n Fishes, ii, 212, 1839 (lamarcMi). 

 Gentropyge, Kaup, Wiegmann's Archiv, xxvi, 1876, 138 (tibicen). 

 Acanthochcetodon, Bleeker, ArcMv Neerl. Sci. Nat., xii, 5, 1876 (lepidolepis) . 



Body oblong, rather robust, the back not greatly elevated nor com- 

 pressed; scales rather small, roughish, often mixed with smaller ones. 

 Vertical limb of the ])reopercle with small equal serrte ; a strong spine at 

 the angle of the preopercle, this usually grooved; interopercle short, 

 armed with 1 to 4 strong spines. Dorsnl fin with 12 to 15 strong spines, 

 which are usually graduated, increasing in height to the last ; soft dorsal 

 moderate, Avith 17 to 20 rays, usually not ending in streamers. Coloration 

 usually brilliant and well defined, the changes due to age less thau in 

 Pomaeanihus ; species numerous in all tropical seas, abounding about coral 

 reefs. {oXoz, whole; auaj^fJa, spine.) 



a. Caudal subtruncate, its angles not produced in filaments, its color yellow 



6. Scales in lateral hue 75 to 80 : a rather narrow curved transverse whitish band 

 behind base of pectorals, its width much less than length of pectoral. 



PASSER, 2097. 

 6b. Scales in lateral line about 60; body olive brown, with a very broad orange 

 area behind head, its width nearly equal to length of pectoral. 



clarionensis, 2098. 

 an. Caud.al lunate, its angles produced in filaments; preorbital with a blunt spine; 

 body mostly black, the head and tail yellow; scales rather larger, about 48. 



TRICOLOR, 2099. 



2097. HOLACANTHUS PASSKK, Valenciennes. 



Head 4; depth 2^. D. XIV, 17 or 18; A. Ill, 16 to 18; scales in lateral 

 lino 75 to 80. Scales subequal in size, the rows lengthwise and crosswise 

 quite distinct. Ascending liml) of preopercle armed only with small 

 serra'; spine at angle of preopercle about 2i; in head; preorbital with 2 

 or 3 blunt points. Color dark purplish brown, crossed below the seventh 

 sijiue by a whitish band attenuated and curved backward below; 4 nearly 

 equidistant, indistinct, vertical, bluish lines across body between the 

 white band and base of caudal; caudal margined with brown; dorsal 

 and anal with 2 indistinct lines parallel with the borders; posterior 

 margins also bluish; caudal [veutrals*], pectorals, and margin of anal 

 yellow; head girdled with 2 distinct bluish bands, 1 in front of eyes, 

 and 1 from front of dorsal and behind the eyes. (Gill.) West coast of 

 tropical America ; Cape San Lucas to the Galapagos Islands; rare. The 



* "Dorsal " yellow in Gill's description is probably a slip lor " ventrals.' 



