ART. 7 



NEW SIAMESE FISHES SMITH 



11 



The nearly uniform rich velvety black of the body and most of the 

 fins is strikingly relieved by the bright orange color of the caudal 

 and pectoral fins, making this one of the most beautiful of the many 

 attractively colored cyprinoid fishes of Siam. Specimens preserved 

 in alcohol or formalin ultimately become brown, and there appears 

 on the side above the lateral line a short distance behind the head a 

 small round black spot that is scarcely visible in life; one or two 

 smaller spots sometimes appear beneath the other. 



CYCLOCHEIUCHTHYS TAPIENSIS, new specieB 



Description. — Back moderately elevated, the dorsal profile from 

 nape to dorsal fin gently curved; depth 3 in standard length; least 

 depth of caudal peduncle 2.5 in head; head about 3.5 in standard 



FiGORB 5. CTCLOCHBILICHTHYS TAPIENSIS 



length; eye large, about equal to snout, 3,2 in head, and about 1 

 in the slightly concave interorbital space; 2 pairs of barbels, the 

 rostral minute, the maxillary less than 0.5 diameter of eye; lines 

 of sensory pores on sides and top of head very prominent; scales 

 in longitudinal series 37, in transverse series 6-1-6.5, around nar- 

 rowest part of caudal peduncle 16, in predorsal region 12. 



Fins : Dorsal origin behind that of ventrals and midway between 

 tip of snout and base of caudal ; dorsal rays iv,8, the fourth simple 

 ray strongly denticulated on posterior border, its length equal to 

 head ; caudal deeply forked, the lobes pointed and as long as head ; 

 anal rays iii,5, the third simple ray osseous and as long as head less 

 snout; ventrals extending beyond vent but not reaching anal; pec- 



