Platk X. 



MOLPADIID^. 



Figures 1, 3, and 11. Caudina arenala (Gould). (From Gerould, 181)0.) 



Figure 1. Adult, laid open to show internal organs. Xatural size. 

 2. Anterior end, showing tentacles and digits. X 5- 



11. Calcareoiis table from skin. X 280. 



Figures 3-7. Aphelodactyla molpadioidcs (Semper). (From Semper, 1868.) 



Figure 3. Calcareous ring. Enlarged ( ?) 



4. Rosettes. X 260. 



5. Buttons. X 260. 



6. Calcareous particles from wall of cloaca. X 260 (?). 

 ■i. Calcareous particles from wall of stonuich. X 260. 



Figures 8 and !). Molpadia tridcns (Sluitcr). (From Sluitcr, 1901.) 



Figure 8. Anchor. X 260 ( ?) 



9. Anchor-plate ("rosette"). X 260 (?) 



Figure 10. Cuviers organs of Caudina cMlensU (Miiller). X 50 (?) (From Miiller, 1854.) 



12. Calcareous table of Caudina albicans (Theel). X 280. (From Gerould, 1896.) 



13. Calcareous plate of CaM(itnacaZi/orntVa (Ludwig.) X 230. (From Ludwig, 1894.) 



14. Calcareous tables of Molpadia odlifica (Pourtales). X 130. (From Dan. and 



Kor., 1882.) 



15. Tables of Molpadia andamanensis (Walsh). X 150. (From Koehler and Vaney, 



1905.) a. Table of body, seen from above, i. Same, seen from side. c. 

 Table from caudal region. 



16. Tables of Molpadia similis (Theel). X. 160 ( ?) (From Theel, lS86rT.) 



Figures 17 and 18. Molpadia marocrana (!>. Perrier). X 70. 



(From E. Perrier, 1903.) ^ 



Figure 17. Table with numerous holes in disc. 

 18. Large perforated plate. 



Figure 19. Rod from tail of Molpadia perforala (Sluiter). X 175 (?) (From Sluiter, 

 1901.) 



Figiires 20 and 21. Molpadia granulata (Ludwig). X 115. (From Ludwig, 1894.) 



Figure 20. Table from caudal region, a. Disc. h. Spire. 

 21. Table from body. a. Disc. h. Spire. 



Figure 22. Table of Molpadia dispar (Sluiter). X 130 ( ?) (From Sluiter, I'.Mil.) 



23. Anchor-plate of Molpadia marenzcllcri (Theel). X 160 (?) (From Theel, 



1886a.) 



24. Characteristic 3-armcd table (from abovi') o{ Molpadia hrevicaudata (Kochhv and 



Vaney). X 150. (From Koehler and \aney, 1905.) 



25. Anchor-arms of Molpadia polijmorjihn (Koehler and \'ancy). X 15"- (From 



Koehler and Vaney, 1905.) 



220 



