EXrLAXATION OF PLATE XXVII. 



Tekeiikatkij.a iT.iCATA ( Sav) II. 364 



I-IO. Two \icw.s each nf fi\-e iliffei-eiit niilividuals. showin.? sonie- 

 lliiiig of tlie raii.go of \ariation of the species. 



Xin\-siiik iniJil : ucar Crawfords Coriu-r. (I2(i'). 

 TI. Tlie In-achi.lii.iiii. ( .\fler \\'hilfiekl. ) 



TEKEr.R.\Ti{M..\ \-.\NO-\EMI (Lyellaiiil Forlies) p. 366 



12-13. Twii views of a very perfect individual. 



X'avcsiiil; marl: near llolnidcl. (12S'). 



CrsTEi.LA EEECUEKL Clark p. 361 



14-17. Views of fiiur different individuals. 



S'liu'ciitnzcn liincSLiiid ; J ' incciitiTwii , (jf,l). 



Platida cretace-\ 11. sp p. 363 



18-19. Views of the type specimens.. 



]' lurcntuwn Iiiiicsaiid: J 'iiu\'iitnii_'ii , (/.i/). 



LiKGUL.v srnsi'.\TL-[..\ H.ill and Meek p. 336 



20-21. Views of two individuals. 



JJ'o:'dhiir\ ilav: Lfirillard. ( inj) . 



1)34 



