3. ETTIUA. 365 



H. Hemprichii (Nake), Mrenb. Symb. Phya. ii. 

 H. Lottum, Ehrenh. Symb. Phys. i. 



Inhab. Bed Sea. 



Observed by Dr. Eiippell " swimming among tbe coral banks on 

 the coast of Abyssinia, near the Dalae Island." The fishermen har- 

 pooned a female, which he dissected. It was 10 feet long. 



The Arabs stated that they live in pairs or small families ; that 

 they have feeble voices, feed on algae, and that in February and March 

 bloody battles take place between the males, which attain to 18 feet, 

 &e.— Penny Cyclopaedia, art. Whales. 



This is probably the same as the Dugong from India and Australia ; 

 but I have not had the opportunity of comparing the skull and skins 

 as in that species. 



b. Teeth none. Rytinina. 

 3. EYTINA. 



Cutting-teeth, canines, and griaders none. Muzzle blunt, lips 

 double, outer upper bristly. Ears none. Eyes covered with a 

 blinking membrane. Skin covered with a thick, brittle or easily 

 cracking fibrous epidermis. The fore feet with claw- like callosities, 

 not supported by phalanges. The tail horizontal, bifid. Teats two, 

 pectoral. Pelvic bones distinct. Stomach simple. 



Sirenia edentula seu Rhytiiieae, Brandt, Symb. Sirenol. 1849. 



Manateseu Vacca marina, SteUer, Acad. Petrop. Nov. Comm. ii. 294. 

 t.l4. 



Eytina, lUiger, Prodr. 141, 1811 ; Olten, Lehrb. Nat. 685 ; Wayler, 33 ; 

 Beer, M&m. Acad. Petersb. 1840, 111 ; Sirenohgia, 1849. 



Rhytina, Brandt, Mem. Acad. Imp. PUersb. vii. 1846 ; Symb. Sireno- 

 hgia, 1846. 



Rityna, Lesson, Nmn. Pig. Anim. 155, 1842 (misprint). 



Stellenis, Desm. ; Cuvier, P. A. i. 275. 



Hydrodamalis, Betzius. 



PDystomus, O. Fischer, Zoogn. 19. 



Nepus, Oofth. Fischer von Waldheim. 



Stellere, Owmer, Big. Anim. 

 Dr. Knox (Cat. Prep. Whales, 37, 1838) shows that the substance 

 in the palate which SteUer describes, and which has been mistaken 

 for teeth, is only a homy skin of the bent-down portion of the two 

 jaws, common to this animal and the Dugong. This suggestion has 

 been adopted by F. Cuvier (Cetac. 377) and Brandt in his ' Sireno- 

 logia.' The latter figures them, and exhibits their structure under 

 the microscope. This horny substance bears evidently a considerable 

 analogy to the baleen of the common whale. 



Rytina gigas. The Morskaia Korova. 

 Black. 

 Manate seu Vacca marina, SteUer, N. Act. Petrop. ii. 294. 

 Trichecus Manatus, MUU. Prodr. Z. Ban. -r , i ,,r ^ na^ 



Trichecus (Manatus) borealis, Gmelin, S.N. i.60; Oken, Lehrb. Nat. 685. 



