INDEX TO TECHNICAL TERMS 



abactinal, 10 

 aboral, 10 

 actinal, 10 



actino -lateral membrane,, 

 actino -lateral spines, 101 

 actinostome, 10 

 adambulacral plates, 42 

 adambulacral spines, 42 

 alveolate pedicellariae, 43 

 ambitus, 258 

 ambulacra, 1, 255 

 ambulacra! area, 255 

 ^mbulacral grooves, 12 

 ambulacral plates, 42 

 amoeboid cells, 4 

 amphiplacous, 343 

 aixif)histernous, 319, 320 

 ampulla, 3, 42, 353 

 anal area, 257 

 anal cone, 12 

 anal plate, 14, 257 

 anchor, 424 

 apical system, 256 

 areole, 258 

 auricles, 261 

 axial organ, 5, 262, 353 

 axillary, 11, 13 



basals, 13 



bihamate spicules, 260 

 bivium, 350 

 body rod, 153 

 brachials, 11, 13 

 buccal plates, 257 

 bursa, 148 



calcareous ring, 351 

 calyx, 11 

 calyx pores, 12 

 camarodont, 261 

 carinals, 131 

 central plate, 146 

 centrodorsal, 10 

 ciliated funnels, 353 

 ciliated lobes, 265 



101 



cirri, 10 



cirrus-socket, 10 

 cloaca, 352 

 collar, 269 

 conjugate pores, 268 

 corona, 254 

 coronal plates, 254 

 covering plates, 12 

 crenulate tubercles, 257 

 cribriform organs, 44 

 crossed pedicellariae, 43 

 Cuvierian organs, 353 

 cystacanths, 309 



diplacanthid, 138 

 dorsal organ, 5 

 dorsal plates, 146 



end rod, 153 

 enterocoel vesicles, 7 

 epaulettes, 265 

 epiphyses, 261 

 ethmolytic, 324 

 etlmaophract, 323 



fascioles, 44, 258, 320 

 forcipiform pedicellariae, 43 

 forficiform pedicellariae, 43 

 furrow papillae, 43 

 furrow sjoines, 42 



genital papillae, 148 



genital plate, 148, 256 



genital slit, 148 



globiferae, 309 



globiferous pedicellariae, 260, 269 



haemal system, 4 

 hydrocoel, 7 

 hydrojDores, 12 



infrabasals, 13 

 inner fasciole, 320 

 interambulacra, 1, 255 

 interambulacral area, 255 



451 



