r L A T !■: X X X [. 



I'l.loCKM'; I'l'XTKNS. 



[ItnU'ss oIluTwisi' stHteil all li,i,'urr^ tire approximali'ly natiinil si/r. Tlu' licht in Ilicsc Iwo lii,Miit-s coim-s fruin the 



ri.tjlil haml siilf. IMut'.ivi^rjiplis h>' liali>li Arnold.] 



Pasre. 



Fui. 1. I',rl,,i [IWteii) h,-lli,s (\mr:u\. A. N. S., riiila., !l(iO 95 



Kxtericir nf right valve nf (iaiib's .Imiim hflln: altitude SO iniii., X o,4. I'lineeiie, 

 Santa Barbara, (al. 

 Fu;. 1(1. Same speeiiiien a^ ll;_', I 95 



Kxlerior iif left valve. ,\ 5 4. 



206 



