PLATE XXII. 



Fmu i!K I. Si jifiiniiiKf (idii 11(1 Vushman. li. K]>. Siilc view. ■' SO. 



1^. Si iihiiniiiii (idnnn Cushman, n. sp. AiM-itural vi(.'W of anotlicr si>i'cimen. X 80. 

 :'.. Cijjisind nibni D'Orbigny. Onvsal \ii'\v. '•■' SO. 



4. I'liliiiiiiliiiii hiii-fiiiii'iixis Ciishmau, n. sji. Ventral view. X -10. 



5. I'lilriiiiiliiia htiriniii'iixix Cii.'sliiiuiu. n. sp. Diirsal view. X 40. 

 (i. J'lihiniiliiiii iilaliidla {\[t^\m\iiu. n. !f\<. 1 >(irsal view. X SO. 



7. Ptiliiiiiiliiiii (/?»/)/■((/(! Cushniaii. ii, s|i. \eiilral \ lew ef a laiyer spccimeu, .showing the sniontli ]iiilitihi'il 



surl'aee nf the ventral siile. • SO. 

 S. I'iiliniiiliiiiiafliiiiiii'uA-[nr.\u.n.sy. Dorsal view. X 100. 



lie 



