SHIELD EEPTILBS. 77 



Family 2. TRIONYCHID^. 



Tribe 1. TEIONYCHINA. 



Genus 1. NILSSONIA. 



1. NiLSSONiA FORMOSA, Gray, P. Z. S. 1873. Trionyr fonnosus, 

 Gray, Cat. Sv^pl. p. 99. 



a. Animal and shell, in spirits ; young. SkuU extracted. 

 T. fonnosus, Grwy, P. Z..S. 1869,|p. 212, t. 15, f. 1. 

 India, Pegu. Theobald. 68, 4, 3, 142. - 



5. SkuU, 7| in., of " a." 

 India. 68, 4, 3, 142. 



c. Skull, adult (without animal), 3 J in. 

 Nilssonia fonnosa, Grwy, P. Z. S. 1873. 

 India. 68, 2, 12, 13. 



Genus 2. FOEDIA. 

 1. FoEDiA Afmcana, Gray, Cat. Sti^pl. p. 100. 



a. Animal stuffed. Dorsal disk, 23 in. 



Trionyx niloticus, var. Gray, P. Z. S. 1864, p. 88. Fordia Africana, 

 Gray, P. Z. S. 1869, p. 119. 

 Upper NUe. Petheriok. 62, 9, 2, 34. 



b. Animal stuffed. Dorsal disk, 22 in. 

 Upper NUe. Petherick. 62, 9, 2, 84. 



c. SkuU ; length to occiput, 4f in. From " b.'' 

 Fordia Africana, Gray, P. Z. S. 1873. 



Upper NUe. Petherick. 62, 9, 2, 34. 



Genus 3. TEIONYX. 



1. Trionyx gangbticus. Gray, Cat. p. 66; Suppl.-p. 97. Trionyx 

 javanious. Gray, Cat. p. 67 ; not synon. Potamochelys steUata, 

 Gray, Cat. Suppl. p. 104; not skuU. Tortoises, do. t. 51 (life). 



a, b, c. Young, in spirits ; 4 in. Back with four black spots. 

 India, Ganges. 



d (6 e. Animals, young, in spirits ; 4 in. Back with four large and 

 two smaU posterior black spots. 

 India, Ganges. 

 /. Animal, in spirits ; very young. Marks on face and spots on 

 back very distinct. 

 India. Argent. 



