PAL/EONTOGRAPHICAL SOCIETY, 1912 



Lake, Cambrian Tnlooites. 



PLATE VII 



4X 1 



/"'< I 



2 X lVa 



7 X lVa 



iggv 



5 X lVa 



3 X P/2 



9XFa 





8 XlVa 



M~ 



n x iy a 



6 X F/a 



§*& 



rf 



im \\W, 



\f V 



11) A 1V2 



12 X 6 





13X2 



14X 2 



15X2 



16X2 



r.A.Brock. a e L 



PARABOLINELLA .TRIARTHRUS 



London Stereoscopic Co. I 



