400 ADDITIONS AND COBEECTIONS. 



TURSIO (page 254). 



Add to generic characters : — 



Pectoral fin moderate, falcate, pointed at the end; hand same 

 length as the arm ; forearm-hones close together ; carpal bones close 

 together, with only a small quantity of cartilage j index finger of six 

 phalanges. 



Tursio Doris (page 256), add : — 



Inhab. Cape of Good Hope {Layard). Skull in South-African 

 Museum. (See Proc. Zool. Soc. 1865, 522.) 



Tursio Dorcides. 



Skull like that of T. Doris, but larger, thicker, and stronger ; 

 beak thick, solid, shelving on the sides, once and one-third the 

 length of the brain-case, twice and one-third as long as wide at 

 the notch ; palate flat. Teeth small, slender, ||^, fuU five in an 

 inch. 



Inhab. ? 



a. 



SkuU. 



Tursio Metis (page 256), add : — 

 6. Skull. Teeth two in an inch. 



Tursio Cymodoce (page 257), add : — 

 h. Skull. Teeth three in an inch. 



Erase Tursio Guianensis (page 257), as it forms a distinct genus 

 on account of the form of its fins. 



Tursio truncatus (page 258), add : — 



The first and second cervical vertebrae united by their bodies and 

 the spinous processes of the neural arch, which is very much elon- 

 gated and keeled above; the lateral processes of the first broad, 

 short, obliquely compressed ; hinder cervical vertebras thin. 



Delphinus brevidens (Gervais, Zool. et Paleont. Frang. t. 9. f. 4, 6) 

 is founded on part of the lower jaw of a Dolphin with truncated 

 teeth, like Tursio truncatus. 



Tursio obscurus (page 264), add : — 



d. Front of the jaws and the pectoral fin. South Pacific. Type of 



Mr. "Waterhouse's D. Mtzroyii. From the Zoological Society's 

 Museum. Teeth ||-, just five in an inch. 



e. SkuU, rather imperfect behind. The type of Delphinus obscurus 



of Mr. Waterhouse, in Catalogue of Zoological Society's Museum, 

 no. 530. From the Zoological Society. 



