51 



l;eljl)lo-strat;i: ä meturs ol' clay containing- shells. Umler this part of the slope, 

 a less steei) pnrtiou it filled u[) with detritus and soil hroken oil' I'roni the upi)er 

 parts, measuring (vertically) 2 meters. Below the surface of the water, a Loring 

 was made whiuh gave the same clay for at least 2 meters more. The strike and 

 dip of the strata could not be measirred exactly, but they seem to have a very 

 slight dip to SE. They are clayish, but impure, :ui 1 reseniblo very much the 

 Oji strata. An accumulation of shells in one layer, like that of Oji, however, 

 is not observed, iuid the clay contains some shells or fragments almost in every part 

 which is exposed. I can only notice a maximum about the middle of the above- 

 mentioned 5 meters. The number of the shells collcütel would have been largo 

 enough, if they had not been mostly broken. 



Great care was to be taken not to mix recent shells — or shells imljeilde 1 in 

 the embankment at the period of its constriiction, like tho.-^e mentioned by JIurse 

 in his Jlemoir on Omori, p. 3-3— with the fossils, and no specimen was collected 

 or noted which was not dug out l)y myself or in my ]"ircsence. Thus I obtained 

 the following Oji species: 



Nassa japonica Lischke. 

 Cohmibella scripta L. 

 Natica Lamarckiana Recluz. 

 Cerithiopsis rugosa Gld. 

 Dcntalium entale L. 

 Solen grandis Dkr. 

 Sasica\-a arctica L. 

 Panopaea generosa Gld. 

 l\ractra venerifonnis Desh. 

 lilactra Sachalinensis Schrenck. 

 Tellina nasuta Cour. 

 Tellina Yeddoensis Lischke. 

 Dosinia e.xoleta L. 

 Cardinm Californiense Desh. 

 Laevicardium bullatum Ad. 

 Area inflata I'ecve. 

 Area snbcrcnafci Lischke. 

 Ostrea gigas Thunb. 

 Anomia patelliformis L. 

 To those 10 species, the following (J an' to be added which have \u>l been 

 found at Oji. 



/i'lji'iiin lic::(inr Linn.'. I'l. IF. lig. 2. 



(Syfit. nnt. ed. 12, p. 1204, as l?iKviiiuni.— T,amarck, Hist. n.vt. &c. second 

 ed. V. D, p. .014, as I'ynda.— Ilueve, Conch. lion. I'yrnla, pi. 4, f. ir).fi.— 

 Lisclikc. .Tajian. !\rocn'S-(Ainrli. v. I. y. ^L— ^lorsc, Shell-mounil of Onioii, 

 p. 34 I. 



