ILLUSTRATIONS 



Plate I 



Map, shov/ing the location of sponge beds of Mindanao and Sulu. (Drawn 

 in the Bureau of Science from Coast and Geodetic Survey charts 4200 

 and 4722.) 



Plate II. Philippine Sponges 



Fig. 1. Elephant's-ear sponge. 



2. Sulu Sea bath sponge. 



3. Honeycomb sponge. 



4. Sheep's-wool sponge. 



5. Philippine zimocca sponge. 



6. Grass sponge. 



Plate III. Three Species of Philippine Turtles 



Fig. 1. Head of the loggerhead turtle (Thalassochelys caretta Linn.). 



2. Carapace of the loggerhead turtle. 



3. Head of the hawksbill turtle (Chelone imbricata Linn.). 



4. Carapace of the hawksbill turtle. 



5. Head of the green turtle {Chelone mydas Linn.). 



6. Carapace of the green turtle. 



Plate IV. Philippine Commercial Trepang 



Fig. 1. Oh nyeow sam; great black trepang. 



2. Buoy hwah sam; long-prickled trepang. 



3. Thang nyeow sam; sandy-bellied black trepang. 



4. Gan sam; great teat trepang, or oval brown trepang. 



5. Oe sam; great smooth black trepang. 



6. Ang thoot sam; smooth red trepang. 



7. Che sam, or moi whar che; great prickled trepang. 



8. Bah sam, or che bah sam; convoluted trepang. 



9. Thang sam; long black trepang. ii 



10. Choo bah sam; brown trepang. 



11. An tiow sam; spiculated trepang. 



12. Choo bah sam; brown trepang. 



13. Thoot sam; white spiculated trepang. 



14. Thoot ah sam; common trepang. 



15. Twa bing thoot sam; brown and white trepang. 



16. Bing thoot sam; red and white trepang. 



17. Liow thoot ah sam; yellow and brown trepang. 



18. Peh thoot sam; white trepang. 



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