Plate 2S. 



[•"u.. !. Mil nijiiia fused. X 'iO. a, dorsal view. /•, \entrnl Aiew. 



2. Trild.'ia Iricdiinata. X 25. o. t'runt view: b. apertural view. 



'■';. Tiila.i id inilixcii Id. X ^o. 



-1. Tritd.riUiui cdpirdld. Y 25. (i. front \ii.'Av: !>. apertutal \ie\v. 



5. (juu(lry!).d y<(:li(i. >' '.'.b. 



517 



