68o Records of Ihc Indian Museum. [Voi,. XXII, 



the lateral line and the ventrals is three and a half in G. arabica, 

 while it is four and a half in Playfair's form. 



(ii) In G. arabica the pectoral terminates about a half of its 

 own length from the root of the ventral, while in Playfair's ex- 

 amples it terminates " at about its own length before root of 

 ventral." 



(iii) The proportions in the two species do not agree. G. ara- 

 bica closely resembles G. stenorhynchus and G. gotyla from India in 

 the character of the snout, which in these three species possesses 

 a proboscis; but whereas in the two Indian species the proboscis 

 is single, in the Arabian species it is provided with two short 

 processes near its base, one on each side. The three species also 

 differ in proportions and number of fin-rays. 



Garra sp. 



■'1897. Discognatliiis sp. ? Nikolsky. Aim. Mas. Zool. Acmi. Pelen- 

 boiii-g II, p. 348. 

 igio. Discognatlins lamta. Jenkins, Rec. IiuL Miis. V. p. 124. 



In this fish the dorsal profile rises from the anterior end of 

 the snout to the origin of the dorsal fin, beyond which it slopes 

 down to the base of the caudal fin. The ventral profile 

 in front of the ventrals is straight and horizontal. The head and 

 body are depressed and the scales on the chest and the middle of 

 the abdomen are poorly developed. To the naked eye, indeed, 

 the surface appears to be absolutely devoid of scales. The length 

 of the head is contained 3 '6 in the length of the fish without the 

 caudal fin. The head is almost 1-4 times as long as broad. The 

 eye is almost in the middle of the head or somewhat in the poste- 

 rior half ; its diameter is contained 5 times in the length of the 

 head. It is dorso-lateral in position and is invisible from below. 

 The interorbital space is slightly less than the length of the snout 

 and almost equals the gape of the mouth ; it is twice the diameter 

 of the eye. The snout projects considerably beyond the mouth 

 which is provided with a fringed labial fold. The mental disc is 

 well developed. There are eight branched rays in the dorsal and 

 five in the anal. The origin of the dorsal is equidistant from the 

 end of the snout and the base of the caudal fin and is also con- 

 siderably in advance of that of the ventral. Tliere are two pairs 

 of short barbels. The maxillar}- barbels are shorter than the 

 diameter of the eye, while the rostral barbels are longer. There 

 are 33 scales along the lateral line and 8 rows between the bases 

 of the dorsal and the ventral fins. 



The air-bladder is slightly reduced, otherwise it is of the nor- 

 mal Cyprinid type. The following are its dimensions in a specimen 

 51-5 mm. in length without the caudal : — 



Length of posterior chamber ... . 9'S mm. 



,, ,, anterior ,, 5'-' ■■ 



Greatest diameter of posterior chamber 2 a ,, 



,, ., ,, anterior ,, ,V5 " 



