434 Annals of the Carnegie Museum. 



are in doubt as to the tenability of the name Thryssa and also as to 

 the validity of the genus itself as distinct from Eucrasicolus or An- 

 choviella. 



Bleeker retains the name Engraulis for the genus here spoken of as 

 Thryssa, but the original type of the European Engraulis {Engraulis 

 eucrasicolus Linnaeus) is a very different fish, with soft flesh and bones, 

 and an increased number of vertebrae. 



13. Anchoviella indica Hasselt. 

 Five specimens. 



14. Anchoviella malabarica (Bloch). 

 No. 8032a, C. M. Two specimens. 



15. Anchoviella mystax (Bloch). 



No. 8033a, C. M. Two specimens. 



16. Anchoviella hamiltoni (Gray). 



No. 8o34a-&, C. M. Three large specimens similar to those from 

 Manila. 



17. Anchoviella setirostris (Broussonet). 



No. 8o35a-c, C. M. Several specimens. 



This species is remarkable for the extraordinary extension of the 

 maxillaries, reaching about to the front of the anal fins. As Valen- 

 ciennes observed, this character is subject to many gradations in the 

 different species. In some, as A. (Thryssa) malaharica it is scarcely 

 longer than in typical Eucrasicolus, with which Thryssa is perhaps 

 to be merged, as already indicated, by Valenciennes. 



Family SILURID^. 



Genus Ompok Lacepede. 



The generic name Ompok Lacepede has priority over Callichrous 

 Hamilton-Buchanan. 



18. Ompok bimaculatus (Bloch). 



No. 80360-^, C. M. Two large specimens from the Mahaweli 

 River at Kandy, and several smaller ones from the stream at Colombo. 



Genus Clarias Gronow. 



19. Clarias magur (Hamilton-Buchanan). 



No. 8037a, C. M. Two specimens from the river at Colombo. 



