ILLUSTRATIONS VII 



The Tree Snails of the Genus Cochlostyla of Mindoro 

 Province, Philippine Islands 



By Paul Bartsch 



Page 



94-1 1 5. Species and subspecies of Cochlostyla 533 



116-118. Maps of Mindoro Province, showing localities where collections 



were made 533 



119. Map of the islands northwest of Mindoro 533 



120. Map of the islands southeast of Mindoro 533 



TEXT FIGURES 



Additions to the Polychaetous Annelids Collected by the 

 United States Fisheries Steamer "Albatross," 1907-1910, 

 Including One New Genus and Three New Species 



By Aaron L. Treadwell 



1-12. Laetmonice nitida 187 



13-20. Nereis masalacensis 191 



Report on the Echinoidea Collected by the United States 

 Fisheries Steamer "Albatross" during the Philippine 

 Expedition, 1907-1910. Part 1. The Cidaridae 



Ry Theodor Mortensen 



1. Part of ambulacrum of Histocidaris magnified 246 



2. Part of apical system of Histocidaris magnified 246 



3. Spicules from tube feet of Histocidaris magnifica 247 



4. Part of ambulacrum of Histocidaris acutispina and of Histoci- 



daris sp 248 



5. Apical system of Histocidaris acutispina 249 



6. Peristome of young specimen of Histocidaris elegans 252 



7. Apical system of young Histocidaris elegans 253 



8. Apical system of Histocidaris sp 255 



9. Part of apical system of Goniocidaris (Discocidaris) peltata 262 



10. Apical system of Goniocidaris (Cyrtocidaris) tenuispina 266 



1 1 . Fart of transverse section of primary spine of Goniocidaris {Cyrtoci- 



daris) tenuispina 268 



12. Apical system of Goniocidaris (Cyrtocidaris) tenuispina tuber cu- 



lata 270 



13. Part of apical system of Goniocidaris (Cyrtocidaris) tenuispina 



major 271 



14. Apical system of Rhopalocidaris hirsutispina viridis 274 



15. Part of apical system of Schizocidaris serrata 278 



16. Details of hair-covering of primary spines of Schizocidaris serrata. 279 



17. Part of apical system of Schizocidaris fasciata 281 



18. Part of apical system of Psilocidaris echinulata 284 



19. Apical system of Stylocidaris effluens 290 



20. Hairs from the primary spines of Stylocidaris reini 294 



21 . Apical system of Stylocidaris annulosa 298 



22. Part of apical system of Stereocidaris sceptriferoides lamellata 305 



