SUMMARY. 
XV 
Vaughan, T. Wayland. — The Stony Corals of the Porto Rican waters. <Bull. U. S. Fish Com. lot 
1900, part 2, pp. 289 to 320, plates 1 to 38. Date of publication, December 13, 1901. 
Page. 
Cyathoeeras portoricensis 293 
Astrangia solitaria portoricensis 298 
Orbicellidte 300 
Duerden, J. E. — Report on the Actinians from the vicinity of Porto Rico. <Bull. U. S. Fish Com. for 
1900, part 2, 13 plates, 4 text figures. Date of publication, April 8, 1902. 
Page. 
Bunodosoma spherulata 350 
Wilson, H. V. — The Sponges collected in Porto Rico in 1899 by the United States Fish Commission 
steamer Fish Hawk. <Bull. U. S. Fish Com. for 1900, part 2, pp. 375-399, 30 text figures. Date 
of publication, March 28, 1902. 
Page. 
Chrotella minuta 383 
Pilochrota variabilis 381 
Pilochrota fibrosa globvdariformis. . . 385 
Coppatias solidissima 387 
Petrosia halichondrioides 389 
Pachychalina mollis 390 
Pachychalina areolata 392 
Pachychalina aurantiaca dura 393 
Siphonochalina procumbensinfirma. 393 
Microciona spinosa 396 
Clathria jugosa 397 
Flint, James M. — The Foraminifera of Porto Rico. <Bull. U. S. Fish Com. for 1900, part 2, 
pp. 413 to 416. Date of publication, March 28, 1902. 
Page. 
Agelas schmidtii 398 
Phakellia lobata 399 
Thrinacophora spinosa 400 
Chalinopsilla pilosa 401 
Cacospongia spongeliformis 403 
Hircinia feetida crispidata 406 
Aplysina flagelliformis anomala 407 
Aplysina flagelliformis rugosa 407 
Aplysina fragilis 408 
Spongelia pallescens fragilis ramosa. 410 
