224 PLATANISTID^. 



12 inches ; the rostrum heing thus 5 inches longer in the former." — 

 Bhjth. 



" The Susu ascends very high up the rivers, if not quite to the foot 

 of the mountains. Hardwicke's drawing was ' made from a living 

 specimen 1000 miles above Calcutta.' Major Tyler has seen them 

 forty miles up the Jumna, and also at Rajghal Mundi in the Dehra 

 Dhoon. In the Indus and Sutlej near Ludiana, but these were 

 doubtless the species (Platanista Indi) proper to the Indus and its 

 tributaries. 



" The Gangetic Susu is common throughout the vaUey of Assam, in 

 the Brahmaputra and its tributaries. I have been assured that no 

 such animal exists in the Irawadi and other Burmese waters. It is 

 migratory, as it occurs towards the Gangetic outlet only in the cold 

 season, as remarked by Dr. Cantor ; but at what particular season it 

 is observed in the upper provinces I have been unable to ascertain." 

 — Blyth. 



" There are 28 or 29 teeth in each side of each jaw. They do not 

 alternate in a quite regular manner. The length and form of the 

 teeth vary much, though not by sudden transitions. The anterior 

 are of considerable length, as much as 9 lines, pointed, and so com- 

 pressed and curved that they have an anterior and posterior surface, 

 the anterior margin convex and the posterior concave ; towards the 

 middle of the jaw they gradually become shorter and cone-shaped, 

 so that the 19th lower and the 21st upper pair only project above 

 the gum like little knobs 1 line high with broad bases : in proportion 

 as they become shorter they recede from each other." — Reinhardt, 

 Ann. J- Mag. N. H. 1852, 174. 



"Anteriorly, the lower teeth are seen to embrace as it were the 

 upper jaw, leaving a deep furrow on the outer side of the opposed 

 gum. Midway in the jaws the apices of the teeth meet the corre- 

 sponding gum close to the outside of their own teeth," — See Illust. 

 Ind. Zool. t. 



Professor Reinhardt says, " the figure in the ' Indian Zoology ' is 

 most imsuccessfid," yet his translator fairly states that it is from 

 " a living specimen," while Eschricht only saw " a young specimen 

 that had been preserved in spirits !" — Ann. Sf Mag. N. H. 1852, 

 167 & note, 



2. Platanista Indi. The Indus Susu. 



Platanista Indi, Blyth, Rep. Asiat. Soc. 13 ; Journ. Asiat. Soc. Beng. 



xxviii. 493 ; Cat. Mas. Asiat. Soc. Beng. 92. 

 Platanista Gangetica, var. minor, Owen, Cat. Osteol. Mm. Coll. Surg. 

 449. no. 2481. 

 Inhab. Indus, Dr. David Wallich (Mus. CoU. Surg.), Sir Alexander 

 Burns, Major Tytler. 



'■ The skull from the Indus, presented by Sir A. Burns, is of a con- 

 spicuously new species. The maxillary crests are wanting in this 

 specimen. The skull is larger and much more robust than that of 

 P. Oangetica, with the same number of teeth, which are more than 

 tM'ice as short, being much ground down bv attiition. Length of the 



