1. KACHUGA. 59 



Cat. Sh. Bept. i. p. 00 (1870); Theob. Cat. liept. Brit. Lid. i.. 1:! 



(1870). 

 Pang:sluu'a lentoria, G'dnth. I. c. p. -M, pi. iv. lig. U; Tluoh. I. c. p. \4. 

 flaviventcr, Giinth. I. c. p. 35 ; Theob. I. c. p. lo ; Li/dekkvi; 



Mem. Geo/. Surr. Iml. (10) iii. p. 182, pi. xxii. (1885). 



dura, Gray, Proc. Zool. Sue. lS(i!), p. 205. 



ventrieosa, Gray, Suppl. Cat. Sh. liept. i. p. 00. 



Cuclioa tenloria, Gray, I. e. p. 61 

 ilaviveiitris, Gray, I. c. 



Carapace elevated, teeti form, the keel ending in a nodosity on tlie 

 third vertebral shield ; posterior margin not or but very slighllj'^ 

 serrated; nuchal shield small, scjuare or trapezoid; first vertebral 

 very variable in shape, usually with straight lateral borders diverging 

 forwards in the halt'grown specimens, narrower in front and with 

 sinuous lateral borders in the adult ; second vertebral as long as or 

 a little longer than second, frequently obtusely pointed beliind ; 

 third vertebral pointed behind, in contact with the point of the very 

 elongate fourth ; fifth vertebi-al broader than the others. Plastron 

 large, strongly angulated laterally in the young, truncate anteriorly, 

 angularly notched posteriorly; proportions of plastral shields very 

 variable ; suture between gulars and huraerals forming a right 

 angle ; axillary and inguinal large. Head moderate ; snout sbort, 

 rather pointed and prominent ; jaws with denticulated edge, uj)pcr 

 not notched mesiall}- ; alveolar surface of upper jaw wdth tlic median 

 ridge nearer the inner than the outer border ; bony choanal between 

 the orbits ; the width of the lower jaw at the symphysis is less than 

 the diameter of the orbit. Fore limbs with large transverse scales. 

 Carapace olive, of young with some black spots, especially on the 

 posterior edge of the three first vertebrals ; an orange vertebral 

 band, and a narrow yellow margin ; more uniform in the adult ; 

 plastron orange or red, with black spots, or brown with a yellowish 

 anterior and lateral border to each shield, in one specimen uniform 

 yellow. Head blackish ; jaws and sides of crown orange ; neck 

 W' ith numerous yellow lines on a blackish ground ; limbs dark olive, 

 spotted with yellow. 



Length of shell 21 centim. 



Gauges and Indus systems ; fossil in the Pliocene Siwaliks. 



a-e. Hgr., spir. Bengal. W. Theobald, Esq. [P.]. 



f, ff, h. Hgr., stm. Bengal. M. Picquot [C], 



i. Hgr., sph-. N.E: Bengal. T. C. Jerdon, Esq. [P.] 



k. Ad., shell. Assam. T. C. Jerdou, Esq. [C.]. (Type 



of l\mf/shnra ventricosa.) 

 l. Ad., shell. Cuttack Biver. F. Day, Esq. [P.]. 



m. Ad., stffd. Deccan. Col. Sykes [P.j. (TypeoiUmys 



tentoria.) 

 n. Hgr., shell. Deccan. Dr. Leitli [P.]. 



0. Ad., stffd. India. R. McClelland, Esq. (Type of 



Panyshurajlaviventer.) 

 p,q,r,s. Ad., shells. India. T. C. Jerdon, Esq. [P.]. 



t. Ad., stffd. India. Dr. J. E. Gray [P.]. 



u, V. Hgr., spir. India, 



w. Ad., skel. India. 



.V. Hgr., sheU. India. 



