Plate 44. 



Showing the Arrangement of the Digestive and Reproductive Organs. 



1, 2. Coelopleurus floridanus A. Ag. 



1. Interior view of abactinal half of test, with organs in place. X 2. 



2. Interior view of actinal half. X 2. 



3, 4. Aspidodiadema meijerei A. Ag. and CI. 



3. Interior view of abactinal half of test, with organs in place, x 2. 



4. Interior view of actinal half, x 2. 



5, 6. Chsetodiadema pallidum A. Ag. and CI. 



5. Interior view of abactinal half of test, with organs in place. Nat. size. 



6. Interior view of actinal half. Nat. size. 



