8 PROCEEDINGS OF THE NATIONAL MUSEUM VOL.79 



dorsal fin. The only other species of the genus which this new 

 form resembles is D. rerio (Hamilton Buchanan), known from East- 

 ern India, in which there are on the side 4 metallic blue lines separated 

 by 3 silvery ones, together with 3 to 6 blue bands on the caudal fin 

 and 3 blue bands on the anal. 



The species is named in honor of Dr. A. F. G. Kerr, botanist of 

 the Siamese government, who collected the type and cotypes. 



DANIO PULCHER, new species 



Description. — Similar to D. alhol'meatus (Blyth) from Sumatra 

 and Burma, but the lateral line absent and the coloration markedly 

 different. The barbels are in two pairs and well developed, the dor- 

 sal and anal rays are in reduced number, and the scales are relatively 

 large. Depth of body contained 3.5 times in standard length, 4.5 in 

 total length ; head short, blunt, 4.2 in standard length, 5 in length to 

 fork of tail, 1.2 in depth of body; least depth of caudal peduncle less 

 than 0.5 head ; qjq situated low on side of head, 3 in head, longer than 

 snout and 0.75 interorbital space; mouth nearly vertical, lower jaw 

 slightly projecting, maxillary not reaching vertical from anterior 

 border of eye; rostral barbel 2 times eye, 0.5 maxillary barbel, ex- 

 tending beyond preopercle; maxillary barbel reaching far beyond 

 base of pectoral; lateral line entirely absent; scales in lateral series 

 34, in transverse series 9, around caudal peduncle 12. 



Fins: Dorsal rays ii,T; origin of fin well in advance of anal, 

 longest ray less than head; caudal deeply emarginate, much longer 

 than head; anal rays iii,15, longest ray somewhat less than head 

 without snout, and base scaly and about equal to head; ventrals ex- 

 tending to vent; pectorals long, equal to head and nearly reaching 

 ventrals. 



Color in life: General color of back and sides pale green, top 

 of head darker green ; belly and chin pale yellow, chest pale orange, 

 flank above anal fin and lower side of caudal peduncle pale blue; a 

 narrow indigo blue median dorsal stripe from head to front of 

 dorsal fin and from posterior end of dorsal to caudal fin; a narrow, 

 diffuse, dull orange band on back from head to caudal fin, separated 

 from a median blue stripe by a narrow space; a bright orange-red 

 lateral band from gill opening to base of caudal fin gradually be- 

 coming wider posteriorly; below this band a similar one of Ant- 

 werp blue; the orange-red band bordered above posteriorly by a 

 narrower band of Antwerp blue, and the blue band bordered below 

 posteriorly by a narrower band of orange-red ; iris pale, with spots of 

 crimson lake; dorsal fin pale green at base, a band of darker green 

 extending midway its length, the distal part of fin chrome yellow. 



