ILLUSTRATIONS. 



Plate I. Philippine Tbepang. 

 Fig. 1. The oe. 



2. The gan sim. 



3. The bark sim. 



4. The moi whar che. 



5. Tlie hong che. 



Plate II. Different Vaeieties of "Baek Sim." 



(Third grade Philippine Trepang. ) 



Fig. 1. Small black trepang. 



2. White ringed trepang. 



3. Yellowish brown trepang. 



4. Dark brown trepang. 



5. Convoluted trepang. 



6. Small convoluted trepang. 



Plate III. Philippine Shark-fix. 



Fig. 1. Dried shark-fin prepared for export. 

 2. The fin prepared for soup. 



Plate IV. Three Varieties of Sea Turtles. 



Fig. 1. The loggerhead {Thalassochelys careitn Linn.). 



2. Head of the loggerhead turtle. 



3. The hawksbill turtle {Ghelone imhricata Linn.). 



4. Head of hawksbill turtle. 



5. The green turtle {Ghelone mydns Linn.). 



6. Head of gi'een turtle. 



Plate V. Philippine Toktoise-Shell. 



Fig. 1. Plate from the hawksbill turtle. 



2. Section showing thickness of the above plate. 



3. Plat« from the green turtle. 



4. Section showing thickness of the green turtle shell. 



Plate VI. Combs Made in Manila prok Philippine Tortoise-Shell. 



Plate VII. Philippine Wimdow-Shell. 



Fig. I. Cross-.section of shell near the adductor muscle showing actual width of 

 shell including the animal. 



2. Window shell, with growth of crustacean eggs near one margin. 



3. Window shell opened and with the mantle of left side removed showing 



the organs in place. 

 Plate VIII. Anatomt of the Window-shell Mollusk. a, Mantle: h. pallial 

 fringe; e, gills; d, adductor muscle; e, liver; /', genital lobe; g. foot: 

 h. anal funnel; i, labial palps; /, ventricle; k. auricle; /. kidneys. 



