5« 



Of li. 1 111? niitlini- is m>aily lir.MiIur. Ihi> Irnjjth iilinost iib j:Mt a^ tlie liei^lit. 

 Tlio siiLvit-fi to Ikj coiniKiR'il arc I', sciiiitoriiis L., Imt ivlsi» 1*. li.iHtatiis Sow. 

 (fJiMild's liL-iii-ius). n vory vari:ililc spcvic!« wliich vcrjics townnl!» 1*. viiliiiliis Himl« 

 (i>f AliLsliU.i) :v<« wt'll lis tow.ir.N 1*. isliiinli,Mis Miifll. 



Ostrcii ill iisrliniiillosti i.isi-lil«'. 



(.Iil|Uil. M(M'ifs-('(i;i(li. V. 1. |. 177. I'l \.l r a ml !■. i.l II I" I an I v 

 X ]>. 114». 



Tliis s|H.vies may Ikj i«:)i 1 to W' still iiion! ddiilitrul mid rififiiiMc« indeed 

 \ciy nuiili tliose forms wliicli Wood repiest-iits (Crag. Moll. If. ]i. 17, pi. 1. f. 1 

 and pi. '2, f. 2) under tiic naiiif ol' Ostrca jiriruvps. (t Ny«t (not Soworliy) iis 

 (). mi lulata (Coqii. foss. ile IVl^'iipii«, p. :V24. jil. 24, f. T und pi. 2'), f. 7'.l. 

 Some large ami good s|>ccimons wore, togetlior with many fraKinciitn, found ut 

 Pliinagawa. 



Waldli<-liiila (irayl Davidson. 

 (PiocL-ed. of ZiHil. Soc London, ISM, p. 7<! ; iliid. 1S71, April, p. 304, pi. 

 31, f. 7 and S.— Adams, Ann. Mag. Nat. IIi.>^t. 2d-.«i'ric.s. v. 11, p. 'JO.). 



Tliougli only om- lower valve of this siK'tii-s— almndantly occiirriug in 

 Japan— ha.«! U-en found at Shinagawa, it lias some importance a« the only «jtoei- 

 imn of IVaeliioiioda of the Tokio layers. It is ejisily rec-ognized I>y it« roundetl 

 triangular rihs (a1«iut ir>) and molenitely tmusversc Rliape. 



P.y the ;nlditi<in of the luw .>;]i;-eies from Biirug.ulai ami Shinag.iwa the 

 total anioiiiit heemnes 7(J. This number is again ineiiM.sed liy the liK-.alilies near 

 ^'(ikiiliama wliiih are to Adlow in the next chapter. 



