142 CETACEA. 



ago, from which the preparations nos. Ill and 112 were pro- 

 cured, I have been convinced that Steller was simply describing 

 a similar substance, no doubt on a larger scale, as the animal is 

 said to reach 26 feet. The substance is neither teeth nor analo- 

 gous to teeth, and we might with the same propriety describe the 

 rough and semi-horny substance covering the osseous palate of 

 the sheep, cow, &c. as a tooth. As a proof that it is not analo- 

 gous even to teeth, the surface of the lower jaw contains rudi- 

 mentary teeth imbedded deep in the osseous texture. Knox, 

 Cat. Prep. 37, 1838. 



Cervical vertebra? all free ; 1st and 2nd, no lateral process ; 3rd 

 and 7th thin, with small lateral processes. Mus. Edinb. 47. 



Dr. Knox suspects there are two species, one with what Sir E. 

 Home calls the permanent, and the other, erroneously, as Dr. 

 Knox suspects, milk tusk. Trans. Roy. Soc. Edinb. ii. 395. 



1. HALICORE DUGONG. INDIAN DUGONG. 

 Blade-bone broad, subtrigonal. 



Hal. (Trichechus) Dugong, Illiger, Prod. 140; Schreb. Saugth. 

 t. 380. f. 5, 6, t. 382, 383; Reichb. Syn. Mam. 16; Icon. Cetac. 

 t. 22. f. 70, 71, from F. Cuvier Quoy. 



Hal. Dugung, F. Cuv. Mam. Lith. t. ; Guerin, Icon. t. 46 ; Les- 

 son, N. R. Anim. 154; Fischer, Syn. Mam. 503; Gray, List 

 Mam. B. M. 



Hal. cetacea, Illiger, Abhand. Berl AJcad. 1813. 



Hal. Indicus, Desm. Mam. 509 ; Schreb. ii. 267 ; Quoy et Gaim. 

 Voy. Astrol. t. 27 ; Owen, Jukes' Voy. Fly, ii. 323, 325, 327. 



H. Indica, Rapp. 26. 



Trichechus Dugong, Gmelin, S. N. i. 60; Erxleb. Syst. 599; 

 Zimmermann, Geog. ii. 425 ; Voy. Pole Sud, Mamm. t. 20, 20 a, 

 b, c, d. 



Dugungus marinus, Tiedem. Zool. i. 554. 



Dugungus Indicus, Hamilton, Jard. Nat. Lib. viii. 300. 



Indian Walrus, Penn. Syn. Quad. 338 ; Shaw, Zool. i. 239 ; Quad. 

 ii. 269. 



Lamantin, Lequal, Voy. 



Manati, Banks, Pennant, Quad. 293 ; Voy. de la Caille, 229. 



Le Dugong, Renard, Poisson. des Ind. i. t. 34. f. 180; Buffon, 

 H. N. xiii. 374. t. 56, skull; Camper, iii. 479. t. 7. f. 2, 4; Cu- 

 vier, Oss. Foss. v. 259 ; IV. Act. Petrop. xiii. 374 ; F. Cuvier, 

 Mam. Lithog. t. 97 ; Raffles, Linn. Trans. ; Phil. Trans. 

 1820, 174 ; Home, Phil Trans. 1820, 144. 1. 12, 14, 314. t. 25, 

 31. 1821, 390; Comp. Anat. t. 52, young, t. 53, skeleton. 



Dugong des Indes, Quoy et Gaim. Voy. Astrol. Mam. 143. t. 27 ; 

 Lesson, Cetac. 80. 



