PLATE XVIII. 
Chelonia — Testudinidw. 
Figs. 1, la. CoLOSsocHELYS ATLAS, Falc. and Caut. The anterior extremity of the plastron, viewed 
from the dorsal (1) and ventral (la) aspepts; from the Siwalik Hills. British Museum 
(No. 406103). The posterior portion is drawn from another specimen. 
„ 2. Genus non. dei. Species 3. The anterior extremity of the plastron, viewed from the 
dorsal aspect; from the Siwaliks of the Punjab. Indian Museum (No. E 84). 
,, 3, 3a. Genus non. dei. Species 2. The anterior extremity of the plastron, viewed from the 
dorsal (3) and ventral (3a) aspects ; from the Siwaliks of the Punjab. Indian Museum 
(No. E 82). 
,, 4. Genus non. del. Species 1. The anterior extremity of the plastron, viewed from the 
ventral aspect ; from the Siwalik Hills. Indian Museum (No. E 82a). 
Figs. 1, la the others naf. size. 
g., gular ; pg., postgular plate. 
