PAL/EONTOGRAPHICAL SOCIETY, 19 12 



Lake, Cambrian Trilobites. 



PLATE VIII 



am 



$M i 



IX 4 



3X4 





4X4 



5X4 



6X4 



9X4 



7X4 





8X 4 



10 X 4 



■ <3 





15X4 



12X4 



\J~ 



i 





:_^r&fc** 



14X4 



^'r. 



18X6 



•c- I 



16X4 



17X4 



19X4 



T.A.Brock. del. 



SPH^.ROPHTHALMUS.CTENOPYGE 



London Stereoscopic Co. lrr 



