j886.] south-african toktoises. 541 



1. Testudo geometrica, L. 



Beak strongly hooked. No large tubercle on the hinder side of 

 the thigh. 



Lateral marginal plates not forming an angle with the costals. 

 Nuchal longer than broad. Suture between the gulars longer than 

 that between the anals ; suture between the humerals as long as that 

 between the femorals, and much longer than that between the 

 pectorals. 



Carapace black, with yellow areolae from which yellow rays radiate ; 

 eight or twelve yellow rays on the vertebrals, nine to twelve on the 

 costals, two to four on the marginals. Plastron brown and yellow, 

 the two colours forming more or less ill-defined rays. 



Common in the Cape Peninsula. 



2. Testudo tentoria, Bell. 



Beak strongly hooked. An enlarged tubercle on the hinder side 

 of the thigh. 



Lateral marginals usually not forming an angle with the costals. 

 Nuchal minute. Suture between the gulars as long as, or shorter 

 than, that between the anals ; suture between the humerals longer 

 than that between the pectorals or the femorals. 



Carapace black, the centre of the areolae with a small yellow or 

 orange spot, from which narrow rays of the same colour radiate ; 

 eight to twelve rays on the vertebral, twelve to fourteen on the 

 costals, three or four on the marginals. Plastron brown in the 

 middle (inner half of abdominal plates), yellow on the sides. 



Common at Beaufort West. 



3. Testudo trimeni, sp. n. (Plate LVII.) 



Beak very feebly hooked. No enlarged tubercle on the hinder 

 side of the thighs. 



Lateral marginals forming an angle with the costals, a convex 

 border with a well-marked longitudinal groove. Nuchal minute. 

 Suture between the gulars as long as, or shorter than, that between 

 the anals ; suture between the humerals not, or but little, longer than 

 that between the pectorals or the femorals. 



Carapace black, with broad yellow or orange rays radiating from 

 a small &p>jt on the areolae; five or six rays on the vertebral plates, 

 and lour to eight on the costals ; a yellow spot or streak at the 

 junction of two plates ; one or two rays on each marginal. Plastron 

 dark brown in the centre, with yellow rays, yellow on the sides. 



Length of carapace of adult 105 millim. 



Mouth of the Orange River. 



4. Testudo terreauxi. Smith. 



Beak very feebly hooked. No enlarged tubercle on the hinder 

 side of the thighs. 



Lateral marginals forming an angle with the costals. Nuchal well 

 developed, a little longer than broad. Suture between the gulars as 

 long as that between the anals ; suture between the humerals much 

 longer than that between the pectorals or the femorals. 



