107 



524. The maxillary and mandilmlar arches of a specie* of Ray (llaia molariden*), 

 from South Australia, charactcriied by the large size and obtuse or flat sum- 

 aite of those teeth which have been in use. Presented by Governor Grey. 



585. The maxillary and nmndibular arches of a species of Ray, from South Australia. 



Presented by Governor Grey. 



528. The maxillary and mandibular arches of a species of Ray, from South Australia. 

 The azygous symphysial row of teeth on the mandible are very distinctly shown 

 in this specimen. Presented by Governor Grey. 



527. The upper and lower jaws of a species of Ray, from South Australia. 



Presented by Governor Grey. 



528. The upper and lower jaws of a species of Ray. Hunterian. 



529. The maxillary and mandibular arches of a species of Ray, from the Cape of 

 Good Hope. Presented by William Norris, K*q. 



580. The tail of an exotic species of Ray. Hunterian. 



531. The tail and serrated spine of the Fire-flare or Sting- Ray (Trygon pastinaca). 



Hunterian. 



532. A similar specimen. Hunterian. 



533. The tail of the Trygon pastinaca, with two serrated spines. Hunterian. 



534. The caudal serrated spine of the Trygon pastinaca. Hunterian. 



535. The skeleton of a small Eagle Ray (Myliobates AquUa}. Purchased. 



536. The tail of an Eagle Ray (Myliobates Aq*tia\ Hunterian. 



p2 



