400 ADDITIONS AND CORRECTIONS. 



TURSIO (page 254). 



Add to generic characters : — 



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

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

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

 phalanges. 



Tursio Doris (page 255), add :— 



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

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



Tursio Dorcides. 



SkuU Kke 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, jItjI, full five in an 



inch. 



Inhab. ? 



a. SkuU. 



Tursio Metis (page 256), add : — 

 h. 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 vertebrae thin. 



Belphmus brevidens (Gervais, Zool. et Pale'ont. Frang. t. 9. f. 4, 6) 

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

 teeth, like Tursio trxmcatus. 



Tursio obscurus (page 264), add : — 



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



Mr. Waterhouse's D. Fitzroyii. From the Zoological Society's 

 Museum. Teeth ff, just five in an inch. 



e. Skull, rather imperfect behind. The type of DelpMnus ohscurus 



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

 no. 530. From the Zoological Society. 



