1. PLAIANISTA. 223 



are rather distant, the front rather longer than the others. In the 

 middle-age specimens, as that %ured by Home (Phil. Trans. 1818, 

 t. 19, t. 20), the roots of the teeth are compressed and hoUow ; but 

 in the more aged animal they are much lengthened, soUd, strong, 

 divided into irregular tubercles and sometimes even into large tuber- 

 culated lobes. 



1. Flatanista Gangetica. The Susu. 

 Blackish-red colour, rather paler beneath. 



Delphinus Gangeticus, Lebeck, iVi Schrift. Berlin. Natur. iii. 280. t. 2, 

 1801 ; Home, Phil. Trans. 1818, 417. t. 20 ; Boxhurgh, Asiatic He- 

 searches, vii. 170. t. 5, 1811 ; Desm. Mamm. 513 ; Fischer, Syn. 506 ; 

 Cumer, Big. Anim. i. 278, 1817; Oss. Boss. v. t. 22. f. 8-10; 

 Schlegel, Ahhandl. 28. 



Delphiuorhynchus Gangeticus, Lesson, Man. 406 (from life). 



Platanista Gangetica, Oray, Bhst. Ind. Zool. t. ; Zool. E. Sf T. ^5 ; 

 Cat. Mamm. B. M. ; Cat. Cetac. B. M. 1850, 137 ; J". Cuv. CHac. 262 ; 

 Blake, Jbum. Asiat. Soc. Beng. 1860, 449 ; Blyth, Bep. Asiat. Soc. 

 12 ; Asiatic Besearches, xii. Append, xxvi., xv. Append, xxxii. ; Cat. 

 Mus. Asiat. Soc. Beng. 92 ; Bernhardt, Trans. Boy. Acad. Sei. Copenh. 

 ii. 1851 ; Ann. Sf Mag. N. H. 1852, 161. t. 45. 



Delphinus Shawensis, Slainv. in Desm. Diet. H. Nat. ix. 153. (from 

 spec, in Mus. Coll. Surg.). 



Delphinus rostratus, Shaw, Zool. ii. 514, 1801 (from spec, in Mus. Coll. 

 Surg.) ; Home, Phil. Trans. 1820, t. 20. 



Flatanista, Lesson. 



Susu, (Euvr. Buffon, i. 215. t. 3. f. 3, 1828. 



Platanista, Plin. Hist. Nat. ix. oh. 15. 



Dauphine du Gauge, Cuvier, Oss, Foss. v. t. 22. f. 8, 10 (from spec. 

 Shaw), 



Inhab. India. Ganges and Brahmaputra with their tributaries 

 {Blyth), Pegu, Irawaddi {Blake). 



a. Stuffed specimen. India. Ganges. 



6. Stuifed specimen : younger. India, Ganges. 



c. SkuU : end of nose entirely straight : young. India, Ganges. 



d. Skull: end of nose recurved. India. Presented by Gibson 



Eowe, Esq. 



" They generally appear in theHougly when the full-grown females 

 are pregnant. The embryo before birth is 14 or 15 inches long. 

 The stomach was fiUed with a quantity of small fish and shrimps." — 

 Ann. 6r Mag. N. H. 1852, 288. 



" There are three stuffed specimens (an adult male, a young and old 

 female) and two skulls (male and female) in the Museum of the 

 Asiatic Society of Calcutta, and a fine series of skeletons in the 

 Museum of the Calcutta Medical College." — Blyth, 



, " The Busu abounds in the river Hougly ; it is extremely difficult 

 to procure, at least in the vicinity of Calcutta, and too often when 

 taken the captors saw off the rostrum." — Blyth. 



" In what I believe to be the skull of an adult male, the sym- 

 physis of the lower jaw measures 17 inches, in the adult female only 



