1918.] N. Annandale: Fisli of the Inle Lake. 41 



Chaudhuria caudata, si>. iiov. 



(Plate I, fig. 1 ; pi. IV, fig. 1—10.) 

 B. V. D. 39-40. P. 6. A. 4i'-1.3. C. 7. 



The length of the head to the gill-opening is contained about 75- 

 times in the total length without the caudal fin, the greatest depth of 

 the body 14-16 times, the caudal fin about 22 times. The caudal region 

 is strongly compressed and tapers considerably ; the vent is situated 

 half way between the tip of the tail and that of the snout. The lateral 

 line is complete and extends along the midrils of the caudal peduncle. 

 The snout is considerably longer than the eye, which is of moderate size 

 and fairly prominent ; the lower jaw projects slightly beyond the upper. 

 The mouth barely reaches as far back as the level of the anterior border 

 of the eye. The pectorals are situated about half way up the body : 



Fig. 1. — Tail oi Chaudhuria caudata. From a specimen mounted whcle in Canada 

 balsam. 



The hypural bones are represented diigraramatically and the dorsal and ventral 

 elements of the vertebrae are omitted. 



their basics are concealed under the opercula. The branchiostegal rays 

 are long and curved. The internal branchial isthmus is broad. The 

 dorsal and anal are of almost equal length and depth. In the middle 

 of the caudal region they have each less than half the depth of the 

 body, but towards the caudal peduncle they become deeper than the 

 body. The caudal fin is markedly asymmetrical when fully expanded, 

 slightly rounded or subtruncate, and more strongly developed on the 

 ventral than on the dorsal side. 



The bones of the skull are extremely delicate and the jaws are 

 feeble. The teeth are arranged biserially in the posterior part of 

 both jaws and triserially near the tip ; in the latter region they are 

 slightly enlarged. 



There are about 70 vertebrae. 



The back and upper part of the sides of the head, body and caudal 

 region are dark purplish brown, somewhat mottled ; the whole ventral 

 surface and the lower part of the sides are yellowish white. The fins are 

 white with very fine and often interrupted dark lines running along 

 each side of each ray ; minute dark spots are often present at the base 

 of the rays. 



