248 Dr. A. Gunther on a 



of the dorsal fin is midway (or nearly so) between the end of 

 the snout and the root of the caudal ; its last ray is opposite to 

 the fourteenth of the anal fin. The second ray of the dorsal 

 and anal fins is a strong spine ; but sometimes the dorsal spine 

 terminates in a flexible top*. Pectoral extending nearly to 

 the ventral. There are five longitudinal series of scales 

 between the lateral line and ventral fin. Dorsal and anal fins 

 with two rows of white spots, which are on the rays them- 

 selves, and particularly distinct in males on the dark ground- 

 colour of the anal fin, which has also a white margin. 

 Four examples, up to 5 inches in length. 



40. AcanthorJwdeus atranalis, sp. n. 



D. 14-15. A. 12-13. L. lat. 35. L. transv. 5£/6. 



Barbels none. The height of the body is two fifths, or a 

 little less than two fifths, of the total length (without caudal), 

 the length of the head a little less than one fourth. Snout 

 shorter than the eye, the diameter of which is rather more than 

 one third of the length of the head, and somewhat less than 

 the width of the interorbital space. The origin of the dorsal 

 fin is midway between the snout and the root of the caudal ; its 

 last ray is opposite to the eighth of the anal fin. The second 

 ray of the dorsal and anal is a strong spine. Pectoral extend- 

 ing nearly to the base of the ventral. There are five and a 

 half longitudinal series of scales between the lateral line and 

 ventral fin. Dorsal and anal rays longitudinally edged with 

 black, these black streaks being interrupted by two whitish 

 bands crossing the rays. Males with a more or less extensive 

 deep-black broad margin of the anal fin. 



Numerous examples, males and females with the egg-tube, 

 upwards of 3 inches long. 



41. Achilognatkus barbatulus, sp. n. 



D. 13. A. 11. L. lat. 36. L. transv. 6/6. 



A pair of very short barbels. The height of the body is two 

 fifths of the total length (without caudal), the length of the 

 head a little less than one fourth. Snout a little shorter than 

 the eye, the diameter of which is one third of the length of the 

 head, and equal to the width of the interorbital space. The 

 origin of the dorsal fin is somewhat nearer to the root of the 

 caudal than to the end of the snout, a little behind the root of 

 the ventral ; its last ray is opposite to the ninth of the anal 

 fin ; its second ray is stiff in its basal half, but flexible in its 



* I have no doubt that the Accmthorhodeus-sipecies will be referred to 

 Achilognathus before long. 



