6 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 79 



19 in predorsal region; lateral line markedly decurved, running on 

 lower half of caudal peduncle, and separated by 4.5 or 5 rows of 

 scales from ventral base and by 8.5 or 9 rows from dorsal origin. 



Fins: Dorsal placed far backward, its origin opposite that of 

 anal and midway between anterior edge of pupil and tip of upper 

 caudal lobe, its longest rays equal to its base and to head less snout ; 

 dorsal rays ii,ll; caudal longer than head, deeply forked; anal 

 base as long as caudal, its margin slightly rounded, the longest rays 

 shorter than dorsal rays; rays ii,22; ventrals placed a little above 

 edge of abdomen, their first ray produced into a filament, more 

 than 0.5 pectorals and reaching anal aperture; pectorals very long, 

 more than 1.75 times length of head, their tip nearly reaching a line 

 from origins of dorsal and anal. 



Color: Upper parts light green, sides and lower parts silvery 

 white ; a round well-defined caerulean blue spot on top of head behind 

 eyes and about size of eyes; a similar-colored area on median line of 

 back extending from dorsal fin nearly half-way to head ; a blackish- 

 green spot about size of eye immediately behind head; dorsal and 

 anal hyaline, pectorals and ventrals dusky, caudal very pale blue. 



After preservation in formalin or alcohol there appeared a series 

 of 4 short vertical blackish stripes alongside before the dorsal fin 

 and on level with the eye, and the blue spots disappeared. 



Type. — A specimen 6.2 cm. long over all, from the Menam Chao 

 Phya below Nakon Sawan, Central Siam, January 5, 1925. Cat. 

 No. 90287, U.S.N.M. 



Paratypes. — Nine other specimens taken at the same time and place. 

 Two of these have been presented to the Zoological Museum in Am- 

 sterdam and one to the Indian Museum, Calcutta. One additional 

 specimen was taken from a fish chute in one of the streams flowing 

 out of Borapet Swamp, near Paknampo, Central Siam, November 

 20, 1923, and another in the Menam Chao Phya near Chainad, Cen- 

 tral Siam, in December, 1924. 



Remarks. — The color of the back of this fish harmonizes with the 

 water and makes the fish almost invisible from above, except for the 

 two brilliant caerulean spots on the top of the head and the median 

 line of the back before the dorsal fin. Fishes kept alive in a pail of 

 river water and viewed from above were quite inconspicuous except 

 for the blue spots. Exceptionally 7 to 9 dark vertical stripes appear 

 along the side in formol specimens. 



DANIO KERRI, new species 



Description. — ^Moderately elongate, the depth 3.3 in standard 

 length ; head equal to depth ; eye about equal to snout, 4 in head, 1.25 



