CHELONIA. 53 



Y. lachrymata. Scutellis luteis nigro radiatis, vertebralibus 

 duplo longioribus quam latis, ultimis convexis. Test, 

 lachrymata, Cuv. R. A. ii. 15. 



S. virgata. Testa ovata, scutellis fasciis luteis variegatis, 

 Chelonia virgata, Dumer. MSS. Schw. Bruce Abys. t. 42, 

 Guerin, Icon. Rept. 1. 1, f. 4. 



£. radiata. Testa ovata. scutellis variegatis, vertebrali pos- 

 tico longiori. Test. Caretta, Schoepf, t. 16, B. Chelonia 

 radiata, Cuv. R. A. Ed. 2, ii. 14. 



Z,. Japonica. Testa nigra ovata subrotunda, scutellis tenuis- 

 simis coriaceis. Test. Japonica, Thunb. Nov. Act. Suec. vii. 

 t. 7, f. 1. Chelonia Japonica, Schw. Caretta Thunhergii, 

 Merrem. 



Hab. in Oceano Atlantico. (v. v. /3. et S. Mus. Par. ?) 

 Z, in Japoniae Lacubus, Thunberg. 



I did not observe the two varieties indicated by Cuvier in 

 the French Museum, and have only placed them as varieties, 

 because the shell is greatly subject to vary in colour, as may 

 be seen by examining the number that are brought to 

 this country for food. 



The number of plates is also liable to variation, and the 

 varieties have from this character been considered species 

 thus: — 1. Scutellis disci, 15, Test, atra, Lin. Caretta atr a, 

 Merrem; 2. Scutellis sterni, 14, Test. Cepediana, Daud. 

 t. 17, f. 1, Caretta Cepediana, Merrem. 



The Turtle described by Thunberg, and said to come 

 from the Lakes of Japan, appears only to differ from this 

 species by the thinness of the scales, which allow the sutures 

 of the bones to be seen through them ; so that Thunberg 

 mistook the suture of the bones for the division of the scales, 

 and considered the discal scales as 5-rowed. The number 

 of claws is variable. 



3. Chelonia Caretta, [Logger-head Turtle.)— -Testa con- 

 vexa, scutelUs disci 15, vertebraHbus convexis; maxillis serratis. 



Test. Caretta, Lin. Logger-head Turtle, Shaw, t. 25, 

 cop. of Aldrov. Chelonia Corianna, Schw. ; Schoepf, t. 16, 

 cop. Test. Corianna, Daud. t. 16, f. 2. Gotwald, f. , 

 cop. Shaw Zool. t. 24. Test, macropus, Walb ; Shaw Zool. 

 t. 23. Bagan. Parergon, t. 192, 193, Cuv. Os. Fos. v. t. 

 12, f.5, 10, 15, 23, 24, 29, 33, 34, 39, 4.3, (Anat.) 



Junior. Scutellis disci tuberculato carinatis. Edw. t. 206, 

 (monst.) cop. E. M. t. 3, f. 3. Schoepf. t. 17, f. , cop. 



