194 DE. J. MUEIE ON THE FOEM AND STEUCTUEE OF THE MANATEE. 



DESCRIPTION OF THE PLATES. 



PLATE XVII. 



Fig. 1. Lateral view of the body of the young male Surinam Manatee (Manatus 

 americanus, Cuv.) forwarded to the Society by Herr A. Kappler. Photo- 

 graphed from the dead body, \ natural size. The tail is seen, not in profile, 

 but slightly tilted towards the observer. «, nasal orifice of the right side ; 

 c, tail-cleft. 



Fig. 2. Abdominal surface of the same animal, also from a photograph : u, umbilical 

 cicatrix ; ^j, external orifice of the penis ; «, anus. 



PLATE XVIII. 

 Fig. 3. Dorsal aspect of the body, the pectoral limbs (as in fig. 2) being outstretched. 



\ the size of nature, and from a photograph. Ji, nares ; e, eye. 

 Fig. 4. Pectoral limb of the left side, seen on its external surface, photographed its 



natural dimensions. /, //, ///, first, second, and third digital nails. 



PLATE XIX. 



Fig. 5. Head and neck, as far as the shoulder, of the same young male Manatus. 

 From a photograph, corresponding as near as possible to the natural size of 

 the animal, n, left nose-opening ; ea, ear-hole, or orifice of auditory canal. 



PLATE XX. 



Fig. 6. Front, and consequently fore-shortened view of the head, body, and pectoral 

 extremities of the above specimen. Reduced in size from nature. The 

 body lying on a table while being photographed has necessarily slightly 

 flattened the chest, e, eye ; n, narial orifice. 



Fig. 7. Muzzle with the mouth opened, from a photograph, of the natural size, 

 showing: — nn, narial orifices; also the upper and lower lips (= outer), the 

 palatal or upper pad, and the mandibular or lower pad (=the additional 

 labial masses, or inner, extra upper, and lower lips of some writers). 



PLATE XXI. 



Fig. 8. Side view of the female Manatee, \ natural size, with skin and subcutaneous 

 fat removed, exposing the superficial muscular layers. The broad tail, con- 

 sisting of fibroid and dermal tissues, is necessarily absent. 



