ORDER OPHIDIA. 



I. Shell hemispherical ; sternum rounded before, divided by 

 a transverse suture ; both lobes mobile, and united to the 

 back shell by a cartilaginous suture ; sternal plates twelve. 

 Cistuda, Gray. 



American Box Terrapin, E. {Cistuda^ Carolines, Test. 

 Carolines, Lin. Test. Brevicaudata, Lacep. Test. Clausa, 

 and T. Irregulata, Daud. Terrapene Carolines, Ter. 

 Nebulosa, and Ter. Guttata, Bell. EdAv. t. 205. 



Shell hemispherical, brown yellow varied, convex, lowly 

 keeled ; marginal plates twenty-six or twenty-seven. North 

 America ; Var. /3. fusca, brown, not spotted. 



Eastern Bow Terrapin. E. (Cistuda) Amboinensis, lllust. 

 Ind. Zool, t. f. 1. Emys Couro, Schw. Terrapene Bico- 

 lor. Bell. Zool. Jour. ij. t. 14. Test. Amboinensis, Daud. 



Shell hemispherical, slightly tri-keeled, blackish, margin 

 expanded, broad ; nuchal plate linear ; sternum yellow and 

 black varied ; head with two yellow lines on each side. Java 

 and Penang, Var. Leveriana. Shell oblong, with back flat- 

 tened, not keeled. 



Three-banded Box Terrapin. E. {Cistuda) Trifasciata, 

 Gray. Sternothcerus Trifasciatus, Bell. Zool. Jour. iij. 

 t. 13. 



Shell oval, keeled, dull yellow, varied with black and red- 

 dish, with three dorsal streaks ; sternum behind nicked ; head 

 yellow, with two brown bands on each side. Inhab. — 



Europ>ean Box Terrapin. E. {Cistuda) Europea. Testtido 

 Europea, Schn, Test. Flava, Lacep. T. Punctata, 

 Gotw. T. Orbicularis, Linn. "^ T. Lutaria, Merrern. T. 

 Meleagris, Shaw, Zool. t. 5. Jun. T. Pulchella, Schoeff. 

 t. 26. 



Shell depressed, oval, yellow spotted ; sternum behind nicked 



7 



