36 



The specimon!« of Oji, Bmall. *mo<>th. thin tin<\ niod«'n»U»ly currod, can not 

 U' united with the specie« fonnci livinp near the .Tapani««* moxt, e g D. octogonmn 



CONCHTVru \ 



iSo/rn ffrnn/U» Uiinker 



(NovitrttOK conchol. 11, p 71, pi. 24, f .') — Li.^chke. .Fnpnn Met'rcvomch 

 vol. I, p 141.». 



Straight, with {«irallel niiirninf, obliquely truncate«! in front ami rounded 

 Ix'hind, moilerately slender (length to height 1:4 or liStsolen."« found in gntit 

 numlier at Oji are not different from the shell whi( h by the alnive nientiimetl 

 Anthoni lui« Ijeen described frnm the Philippine iHlaiul)« and Nagasaki, but whifh 

 also L« founil at Yenoshima. The hinge, having but one tooth in each valve, 

 quite close to the anterinr margin in t)ie right and a little U-hind in the left valve, 

 suffices to distinguish this true solen frcnu s|ierie«! similar in appeanuc; (S gla- 

 diolus <tray, also S. niliqua, wlijch is b«»iide< a little m^'re slender I, whilst the |urific 

 species belonging to the same group are all excluded by their diffen'nt outlines 

 («•. g. Solen sicarins Gould, Otia concli. p. 74, by ita gn-ater height and curv«««! 

 inferior margin. S gracilis. Gould, or S)!en Gouldii Conrad in Anur Journ. of 

 Cfmch. Vol. III. 1867, App p 28 and Lischke, Jap Meeres-conch . v. 2, p 123. 

 and also S. strictus Gould and S. comeus Lamck by their much smaller 

 height I. 



It is to be adde<l. however, tliat S. .•jicarius, according to the figtire given 

 in the Atlas of Moll. «ftc. of Wilkes Exped. pi. 33, f. 501, may be less different 

 than the diagnosis seems to indicate. 



Saricava arrlica Liime (Mya). 



(Syst Xat. ed. 12. p. 1113, Gmelin. Linn, syst nat >->\. 13, p .3-226.- 

 I'hil Enum. Moll. Sic. vol 2. p 11> — Forljes and Ilanley, brit. Moll. I p. 

 141. ])1. 6. r 4-6 and pi. F. 6.— ,Teffreys. brit. conch v 3. p. .SI, at, 

 S rngosa var. arctica. S. Wood. Crag moll II p 287. pi. 29. f 4 —Wein- 

 kauff, (^onch. des Mittelm. vol. I. p 20— Lischke, Ja|ian. Meere«-Conch, 

 V. 1, p. 134, V. 2, p. 122 * ir>ry v. .3, p K«) ). 



ThJi variable, world-wide species, which is alao very often fotmd in Tertiary 

 deposit«, occurs ab\indantly at Oji. It is mtwtly sujall. but in a few^ instances 

 reaches 18 mm in length and 11 in h<*ight. 



I'annpnea gent rota Gould. 



(Otia conch, p. 165 and Atlas of Moll. & shells of Wilke's Expl. Exp. 

 pi. 34, f .'K)7 ) 



Exactly corre*|H>iiding to the description and figure of Gould, the specimen« 

 of Oji are determined aL'c^jrdingly Tliey are not very num«»rous and not much 

 above 1(X) mm. in leugtli, and 1)5 in In igbt, umboncs being at 45 mm distance 

 from the anterior margin It is not the place here to diacuae whether and how 



