34 SILUHID.E. 



k,l,m. Half-grown. Chusan. From the Collection of the East India 



Company. — Types of S. nunctatus. 

 11. Adult. Formosa. From Mr. Swinhoe's Collection. 

 0. Half-grown. Moluccas ('?). 



Some of the specimens show a distinct interruption in the middle 

 of the band of vomerine teeth, whilst in others the bands are con- 

 fluent. In none of the specimens are the spots described by Cantor 

 visible, 



4. Silurus afghana. 

 D. 2. A. 70. P. 1/1.3. V. 10. 



The upper jaw is longer than the lower ; snout very obtuse, rounded, 

 with the cleft of the mouth extending to below the eye ; the width of 

 the head is three-quarters of its length. The maxillaiy barbels are 

 twice as long as the head, and thrice as long as those of the mandi- 

 bles. Eye small. The dorsal fin is quite rudimentary ; its distance 

 from the occiput is less than the length of the head. Anal and caudal 

 slightly continuous ; caudal rounded. Pectoral obtusely rounded, as 

 long as the head without snout ; its spine without distinct denticula- 

 tions, not quite half as long as the fin. Vomerine teeth in a very 

 narrow, uninterrupted, curved band. 



Afghanistan. 

 a. Five inches long. From Mr. Griffith's Collection. 



5. Silurus cocMnchinensis. 



Silurus cochinchineusis, Cuv, «^ Val. xiv. p. 352. 

 D. 4. A. 62. P. 1/11. V. 10. 



Maxillary barbels much longer, mandibulary rather shorter than 

 the head. Pectoral spine scarcely serrated ; pectoral fin shorter than 

 the head. Vomerine teeth forming a band, which is a little inter- 

 rupted in the middle. Anal and caudal close together, but separate. 

 The upper jaw is longer than the lower. 



Cochinchina. 

 a. Fine specimen, 4 inches long. 



Silurichthys berdmorei, Blyth, Journ. As. Soc. Beng. xxix. p. 156, 

 is probably identical with this species ; the anal is said to be con- 

 tinuous with the caudal, but distinctly defined. 



6. Silurus (?) malabaricus. 



Silurus malabaricus, Cuv. Sf- Val. xiv. p. 353. 



D. 4. A. 62. P. 1/13. V. 9. 

 Lower jaw prominent ; the anal terminates immediately before the 

 caudal. Pectoral spine strong and serrated ; pectoral fin rounded. 

 Vomerine teeth in two separate groups. {Val.) 

 Coast of Malabar. 



It is doubtful whether this species belongs to the genus SUmnis, 

 the short description given by Valenciennes having been taken from 

 specimens in a bad state of preservation. 



