552 BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



5b. Scales in longitudinal series about 105 ; body rosy, with 7 or 8 dark cross 

 bands ; side of head with irregular rosy or pearly spots surrounded by 

 a narrow dark line; membranes of dorsal fins with a large elliptical 

 ocelli with mauve center surrounded by a narrow white ring and a 

 narrow dark margin ; second dorsal and anal fins blackish or dark 



purplish with a liglit edge; caudal fin white leptocephalus 



Id. Dorsal rays VI-I, 19 or 20 ; anal rays I, 19 or 20 ; scales in longitudinal series 

 over 100 ; caudal fin lanceolate ; body greenish, with 3 broad rose-colored 

 cross bands ; dorsal fins pale green, first red above, second yellow above ; 

 with blue and I'ed margins; caudal fin green with many alternating bands 

 of red and blue, its upper edge yellow ; anal fin green, with a double median 

 longitudinal baud of red and blue; ventx*als pale reddish violet; ijec- 

 torals pale rose g'ymnocephalus 



CRYPTOCENTRUS MAUDAE Fowler 



Cryptocefitrus maudac Fowler, 1937, p. 254, fig. 283 (Bangkok). 



A strikingly marked fish, known from a single specimen 14,8 cm. 

 long, from Bangkok. Besides dark cross bands most distinct on the 

 posterior half of the body, the dorsal rays are spotted, the caudal has 

 10 curved cross rows of dark spots, the anal has 8 to 10 bent black 

 bars, and the pectorals have 6 curved transverse dark bands. 



All the other local species have a lanceolate or a bluntly pointed 

 caudal fin. The presence in this species of a caudal fin with a rounded 

 posterior edge is at variance with the generic definition of Grypto- 

 centrus. 



CRYPTOCENTRUS WEHRLEl Fowler 



Cryptocentrus wehrlei Fowlee, 1987, p. 256, fig. 284 (Bangkok). 



This species is known from a specimen 9 cm. long taken at Bangkok. 

 It somewhat resembles C. leonis but differs in such characters as 

 squamation, shape of caudal peduncle, and coloration. The princi- 

 pal differential features are in the scales in longitudinal series (79 

 against about 125), scales in tranverse series (21 against 30), pre- 

 dorsal scales (22 against 35), depth of caudal peduncle (3.75 against 

 3 in head), and pale brown coloration of body with about 6 dark 

 brown cross blotches (against plain reddish brown body without any 

 markings). The series of dark, parallel oblique lines on the side of 

 the head behind the eye is common to both forms. 



CRYPTOCENTRUS CALLOPTERUS, new species 



Plate 9, b 



Description. — Elongate, body and head moderately compressed, 

 depth 5 to 5.25 in standard length, depth of caudal peduncle 1.5 in 

 its length and 2.4 in length of head; head blunt, its dorsal profile 

 regularly curved and similar to its ventral profile, 3.6 in standard 

 length ; snout gently decurved, shorter than eye and about 4.5 in 

 head ; eye reaching dorsal profile of head, 4 in head ; eyes very close 



