84 



little oWique, »re cros8ed by Ironsverw »triiw. Tl»e character» <1o not rliffiT in 

 anv jmrtkiilHi from tlie r.riti>li Hjuviinens, foteil or ruoeiil Ainoti^ hII IIio 

 «HM-iitJ iiitiitiKtR'il l»y Ijuiild, «Illy M. Muiiat«'», Ot. ioikIi. \>. J 37, might U> 

 idfiitical ; but ita whorls liavu Uivir clcvtiti*«! |iart iictirly iu tlie luiibllc. 



TtrtUra hipartltn (jonld. 

 lOtift GinclioIogioR p. 126. >. 



T1ÜS species was ruroly foutrl at Oji, llio f!]>ciiincns Imvi;' ••• IS mm 



in li-n^rtli. and iit-arlv T) mm. in diameter. The nnm1>cr of I..; .1 rilis is 



13 to V^i", in their intervals, we eee very finely pnnctatcd tnmüver.M; line« men- 

 tioned by Gonld, one of wliiih if stroni^cr, und jiliued at J of cticb whorl from 

 the lowtT, ^ from the n|i[»er or jKxiti-rior suture. The R|x'Limi'nH ühow very 

 weak traces of tlie differences of color seen in tlie recent shells fr»)m Japan. 



Trirhiitiofi'is ( Iphinoi') coronuta OonM. 

 (Utia Conchol. \>. 121. i. 



The very curious and ele;.^iint s|>ecies, as (ioiiM miys, lias been rarely found 

 at Oji. Tlie .specimens are much (»mailer than those which üouM mentions 

 from the Arctic .Seas (Straits of Seniiavinei. For the latter are baid to have 

 little more than G whorls and '!'> mm. in length by IS n>m. in diauiett-r. whilst 

 the fossil in Oji specimens with T) whorls, have only lU mm in length and C in 

 diameter. The dimensions, however, and the very typical form and sculpture 

 (one strong keel on an angulated margin. abo\c or liehind whi'li the shell is 

 quite even and horizontal, whilst it is also smooth, but Mtnndatcd, below or 

 anteriorly, the wide and deep »imbilicus with its .sharp marjjiii. the simple lip and 

 ovately triangulated orifice I, so ix.'rfectly agree that a spcxilic sejaratiou seems 

 quite mitenable. Moreover, the number of the whorls iti the larger si>ecimen8 

 may lie diminished by resorption, as Goiild's statement : anfr. 6 -j- etc. ; seems like- 

 wise to indi -ate. At the utmost, the Jajvanesc fossil fonu coidd l>c disiinguibhetl 

 as a "hvarfish variety. 



Tiochvs unjifvostomus timelin. 

 (Syst. Nat. Linn. ed. 13, p. 3583.— Chemnitz, couch, cab. vol. 5, pi. 165, 

 f. 1502 & foil., and ed. nov. Trochus pi. G, f 1.2 Lisihke, Jap. Meeres- 

 Conch. vol, ]). ItG, pi. 7. f. 3-5). 



Some fragmentary sjK-cimfns of the obtuse conical si>l'( ii.-s (with ci"s«l um- 

 bilicus) suffice to give evidence of the existence of this six-^cic« (|)ccuiiar to the 

 East-Asiatic shores and continental isles from Korea to the Phillipince) within 

 the compass of the formation of Oji. 



Tornatia exilifi Dunker. 

 (Moll. Japan, p. 25, pi. 2. f 14.-Lischke. Jap. Meerw-Couch. vol. p. 

 105.). 



Very seldom at Oji, the shell is nearly cylindrical, rotmdod at the emU; the 

 •pitc slightly elevated with niammiilatcd— einistral— apex. The aperture ia 



