106 DR. .J. E. T. AITCHISON ON THE ZOOLOGY OF 



Plate IX. 



Fig. 1. Stenodactylus lumsdenii, Blgr. 



Fig. 2. Agamura persica, A. Dum. Female. 



Fig. 2 a. „ „ „ ; chin, enlarged. 



Fig. 2 b. „ „ Male. 



Fig. 2 c. „ „ „ ; chin, enlarged. 



Fig. 3. Phrynocephalus maculatus, And. 



Fig. 4. Scapteira acutirostris, Blgr. 



Fig. 4 a. „ „ Side view of head, enlarged. 



Fig. 4 b. „ „ Upper 



Fig. 4 c. „ „ Lower view of posterior part of body, enlarged. 



Plate X. 



Agama isolepis, Blgr. Male, female, and young. 



Plate XI. 



Fig. 1. Lytorhynchus ridgewayi, Blgr. With enlarged views of head. 

 Fig. 2. Naia oxiana, Eichw. Side views of heads of four specimens. 



FISHES. 



By Dr. A. Gunther, F.R.S., 

 Keeper of the Zoological Department, British Museum. 



1. Ciurhina afghana, sp. n. (Plate XII. fig. C.) 



D. 13-14. A. 10. L. lat. 40. L. transv. 713-4. 



One pair of barbels only at the angle of the mouth, which are shorter than the eye. 

 Lower lip transverse, generally covered with a horny substance which forms a sharp 

 edge ; the snout is rather obtuse and rounded. Dorsal fin commencing in front of the 

 ventrals, its origin being equidistant between the end of the snout and the root of the 

 caudal fin, and opposite to the twelfth scale of the lateral line ; its longest single ray 

 is scarcely longer than the branched rays, but found to be distinctly serrated along its 

 basal portion after the investing skin has been removed. Anal fin narrow and high, 

 extending nearly to the caudal when laying backwards. Caudal fin deeply cleft. 

 There are three or four longitudinal series of scales between the lateral line and the 

 ventral fin, but sometimes the lowermost is not developed ; in fact the whole of the 

 abdominal surface, from the isthmus to the vent, is naked or covered with small 

 rudimentary scales only on the sides. The height of the body is contained from three 

 times and four fifths to four times and one third in the total length without caudal ; the 

 length of the head rather more than four times. Coloration uniform. 



