420 THE MARQUIS OFTWEKDDALE ON BATR ACHOSTOiMUS. [May 15, 



The British species have been restricted to three (or perhaps 

 four), in none of which has the snout a soft conical prolongation. 



The C. oxyrhynchns belongs to the subdivision in which a soft 

 conical prolongation of the snout is present. 



Coregonus oxyrhynchus. 



The specimen I obtained is about 7 inches in length, and may be 

 briefly described as follows: — 



B. ix, D. 14, P. 15, V. 6, A. 15, L. 1. 80, L. tr. -^. 



Length of head 5, of caudal fin ^, height of body 6 in the total 

 length. Eyes, diameter 4| in the length of the head, 1^ diameter 

 from the end of snout, and \\ apart. Teeth absent from the jaws. 

 Fins, pectoral as long as the head excluding the snout. Scales, 7| 

 rows' between the lateral Hne and base of the ventral fin. 



As this fish is found along the coasts and entering the fresh 

 waters of Holland, Germany, and Denmark, it is remarkable that it 

 has not been recorded from" the east coast of England, as stragglers 

 are probably of no rare occurrence. 



2. Notes on the Species of the Genus Batrachostomus inha- 

 biting the Indian Region. By Arthur, Marquis of 



TWEEDDALE, F.R.S. 



[Eeceived May 15, 1877.] 

 (Plates XLV.-XLIX.) 



The rarity in our collections of examples representing the different 

 members of the genus Batrachostomus in all their various states of 

 plumage, the want of field-collectors' notes to elucidate the few that 

 do exist, the variability and intricacy of the markings by which they 

 are characterized, and consequent difficulty, more especially in the 

 males (?), of conveying by mere description, and even by coloured 

 drawings, an adequate conception of their distinctive external cha- 

 racters, have combined to retard our knowledge of the genus. 



The group was unknown to the older zoologists ; and Dr. Hors- 



