TESTTTDINIDJ3. 89 



Testudo sloanei, Lydekker, n. sp. 



Imperfectly known, but in its extremely vaulted carapace allied 

 to Testudo joardalis of Africa, or to T. radiata of Madagascar, with 

 both of which it agrees in the absence of swelling in the shields : 

 epiplastrals produced only to a small extent. This form seems to 

 be certainly specifically distinct from all sufficiently described 

 Tertiary species, and is probably not identical with any living form. 

 The type shell has a length of about 0,180 (7*1 inches). 



Hob. Turkey. 



R. 1587. The imperfect shell ; from Tertiary beds in Turkey. The 

 type specimen. The neurals and most of the costals of 

 the carapace are preserved, but the marginals are wanting, 

 and the plastron is imperfect. In the MS. Catalogue of 

 Sir Hans Sloane's collection this specimen (No. 1821) is 

 entered as " a petrified common land tortoise, filled with 

 hard stony chalk, from Turkey." 



Shane Collection. Purchased, about 1754. 



Testudo escheri, Pictet & Humbert \ 



Shell moderately vaulted, more than twice as long as deep; 

 shields strongly striated ; posterior border somewhat everted, and 

 probably serrated ; vertebral shields not broader than costals ; 

 nuchal and caudal shields unknown. Plastron only slightly pro- 

 duced anteriorly ; entoplastral wider than long ; xiphiplastrals 

 angularly notched ; pectoral shields extremely short. 



The type specimen has a length of 0,250 (9'9 inches), but the 

 undermentioned entoplastral indicates a larger individual, equal in 

 size to T. radiata. 



Hob. Europe (Switzerland). 



R. 1516. Cast of an entoplastral bone probably referable to this 

 species. The original was obtained from the Middle 

 Miocene of Chaux-de-Fonds, Switzerland, and is figured 

 by Pictet and Humbert in their ' Cheloniens de la Molasse 

 Suisse,' pi. xv. figs. 1, la, without specific name. The 

 plastron of the type shell of T. escheri, which was obtained 

 from the same horizon, is represented in pi. iii. of the 

 same memoir ; its entoplastral, although smaller than 

 the present specimen, has the same general characters. 



Egefton Collection. Purchased, 1882. 



] Paleontologie Suisse — Cheloniens cle la Molasse, p. 17 (1856). 



