1684 Bulletin ^7, United States National Musetim. 



2099. HOLACANTHUS TRICOLOR (Bloch). 

 (Rock Beauty; Catalineta; Vaqueta de dos Colores.) 



Head 3i; depth If. D. XIV, 19; A. Ill, 18; scales 3-48-25. First dorsal 

 spine li in Icngtli of the last, which is 2+ in head ; ascending limb of pre- 

 opercle armed only with small serrje, the largest not more than ,-,- the length 

 of the large spine at the angle ; angles of the caudal produced into tila- 

 ments ; preorbital with a distinct blunt spine ; scales nearly uniform in 

 size, the lengthwise and crosswise rows quite distinct. Color in life: 

 head, anterior part of trunk,, and caudal fin golden yellow; rest of body, 

 snout, and chin black; dorsal, anal, and opercle edged with scarlet; 

 orange on upper and lower ray of caudal; iris yellow, blue above and 

 below. West Indies, north to Bermiida, south to Bahia; common; not 

 known from the United States, (tricolor, three-colored — orange, yellow, 

 and black.) 



Catalineta, Pabra, Descr. Dif. Piez. Hist. Nat. Cuba, 12, pi. vn, fig. 2, 1787, Cuba. 



Ghcetodon tricolor, Bloch, Ichth., pi. 426, 1795. 



Holacanthv^ tricolor, LACfipfeDE, Hist. Xat. Poiss., iv, 525, 1803; Cuvieb &. Valenciennes, 



Hist. Nat. Poiss., vn, 162, 1831; GiJNTHEE, Cat., n, 49, I860; Poey, Memorias, n, 371, 



1861; Poey, Enumeratio, 61, 1875; JoEDAN & Rutteb, Proc. Ac. Nat. Sci. PMla. 1897, 



125. 

 Genicanthus tricolor, Swainson, Class. Tisbes, Amphibians, and Reptiles, ii, 212, 1839. 

 Pomacanthus tricolor, Jordan & Gilbert, Synopsis, 941, 1883 ; Eigenmann & Horning, I. c, 



15, 1887. 



662. ANGELICHTHYS, .Jordan & Evermaun. 



(ISABELITAS.) 

 Angelichthys, Jordan & Evermann, Check-List Fishes, 420, 1896 (ciUaris). 



This genus is separated from Holacanihus by the presence on the ascend- 

 ing limb of the preopercle of several stout graduated spines in addition to 

 the large grooved spine at the angle. The soft dorsal and anal are much 

 falcate and the preorbital is without spine; interopercle armed with 1 to 4 

 spines; scales rather large; body ovate, rather deep, and compres.sed. 

 The known species are among the largest of tbe Cha-todonts aud perhaps 

 the most gaily colored of all. Species all American. {dyyEXoi, angel; 

 iX^vi, fish.) 

 a. Spines on ascending limb of preopercle moderate, tbe longest less than J length of 

 the Large spine at the angle. 

 h. Nape with a blue ocellus; soft dorsal and anal edged witli dark blue; depth 1| 

 in length in adult. ciliaeis, 2100. 



hh. Nape without distinct ocellus; no dark-blue edgings to soft dorsal and iinal ; 

 body deep, the depth 13 in length in adult. isabelita, 2101. 



aa. Spines on ascending limb of preopercle very strong, the longest about J length of 

 the long spine at the angle; no ocellus at nape; no blue edging to soft dorsal 

 and anal ; depth If in length. lODOCUS, 2102. 



2100. AXGELICHTHTS CILIARIS (Linn.uus). 



(Angel-fish ; Isabelita.) 



HeadSi; depth 1|; eye 4^ in head; snout 2^. D. XIV, 21; A. Ill, 21. 



Body obloug, oval; anterior profile straight, steep, sharply convex in front 



of dorsal; anterior dorsal outline and ventral outline nearly parallel; 



