XVI LIST OF ILLtrSTEATIONS. 



PAGE 



91. Section through a calcareous Sponge, showing the simple 



central Cavity ; b, the Sponge in an uninjured State 



(after Haeckel) 342 



92. Sj/onffia cmi,ilaginea, Esper, half nat. size 343 



93. Sjwni/ia cartilat/inea, Esper ... ... 344 



94. EntoconcJia miraHlis, Muller 348 



95. Two undescribed Species of Eulima 351 



96. Cladogaatlms dorsalis,- Erichson ....... 366 



97. Chaloosoma Atlas, from the Philippines 367 



98. Section of Byes 370 



99. Section of the Dorsal Eyes ot Onchidium verriiciilatiim . 371 



100. Pe)'ioj>7ithalnius£belretUeH,a'PishwMahprii:anesth.eO>ic7iidiiim 373 



101. Development of the Eyes of OncMdium .... 378 



102. Grasshoppers protected by their likeness to Leaves . . . 383 



103. a, Doliops sp., mimics b, Pctehyrhynchiis orhifcr \ c, Boliopt 



curenlianides, mimics d, PaoJiyrApwhujisp. ; c, ScepaMiis 

 pac/ti/rhynchoides (a, Grasstiop^i'), mimics /, AjMcyHus; 

 g, Doliops sp., mimics 7t, Pachyrhynclius sp. j i, Pkor- 



aspis sp. (a Grasshopper), mimics It, a Coceinella . 390 



104. Spiders which mimic Ants ggi 



105. a, Rhysata Antonii, mimicked by J, Xesta mindaiuieam ; c, 



HelicaHon tigrinus, mimicked by d, Xesta Camingi 395 



106. Mymcola in/tnidibulum (after ClaparMe) 401 



