A D E R B I S. 



Species 11. (Mus. Adams.) 



Adeorbis J.\ponica. Ade. testd rhpressa, parni, 

 Icevigatd, discoided ; semipellucidd, concentrio: 

 oblique striata; spird subdiscoided, anfractihus 

 knte crescentibm, rotundis, umhilico Into, costd 

 validd, marginato. 



The Jap.^n AuEonBis. Shell depressed, small, smooth, 

 discoidiil; somipellucid, concentrically obliqu<4y 

 striated ; spire rather discoidal, whorls slowly 

 increasing, rounded, umbilicus wide, bordered 

 with a strong rib. 



A. Adams. Apn. and Mag. of Nat. Ili.st., ISfll. 



Hab. Gotto Islands, Japan. 



Species 12. (Mus. Adams.) 



Adeorbis Sinensis. Ade. teatd subdiscoided, solida, 

 opaci'i ; striis minutisshnis spiralibiis et conceMricis 

 decussatd ; spird svbplanulatd, aiifractibus rcju- 

 lariler crescenlibus, rotundis ; umbilico mcdiocri, 

 aperturd oblique rotundatim ovato. 



The Chinese Adeokbis. Shell rather discoidal. solid, 

 opaque ; decussated with very minute spiral and 

 concentric stri;e ; spire rather tlat, whorls regu- 

 larly increasing, rounded ; umbilicus moderately 

 large, aperture obliquely rounded oval. 



A. Adams. Ann. and Mag. of Nat. Hist., 18G1. 



Hab. China. 



Spec 



(Mus. Ada 



Adeorbis prominula. Ade. testd subdiaphand, nitidA, 

 striis concentricis tenuissimis sculptd ; spird de- 

 presso-conicd ; anfractibus vix promincntibus, rapidc 

 crescentibus ; umbilico mcdiocri, submarginato ; 

 aperturd obliqud. 



The prominent Adeorbis. Shell rather transpa- 

 rent, polished, sculptured with very thin con- 

 centric strife ; spire depressed-conical ; whorls 

 scarcely prominent, rapidly increasing ; umbilicus 



middle-sized, slightly bordered ; aperti 



lique. 

 A. Adams. Ann. and Mag. ol" Nat. Hist, 18G1. 

 Hab. Mino-Sinia, Japan. 



Species 14. (Fig. a, b, Mus. Adams.) 



Adeorbis clausa. Ade. testd discoided, subdiaphana. 

 tenuissime concentrice striafd ; spird depressd, an- 

 fractibus vix prominentilnis, superne subplanulatis ; 

 umbilico partim callo obtecto. 



The closed Adeorbis. Shell discoidal, rather trans- 

 parent, very finely concentrically striated ; spire 

 depressed, whorls scarcely prominent, rather flat- 

 tened above ; umbilicus partly covered by callus. 



A. Adams. Ann. and Mag. of Nat. Hist, 1861. 



Ilab. Mino-Sima, Japan. 



The umbilicus being partly lilled up by a callus, 

 makes it a leading species towards the genus Tcinostuiua. 

 in which the umbiHcus is entirely filled. 



Species 15. (Fig. a, b, Mus. Adams.) 



Adeorbis suturai.is. Ade. testd subglobosd, tenui, semi- 

 pellucidd, tenuissime concentrice striata; spird 

 subproductd, anfractibus rapid!: crescentibus ; suturd 

 profundd ; aperturd magnd ; umbilico parvo. 



The sutured Adeorbis. Shell subglobose, thin, semi- 

 pellucid, very finely concentrically striated ; spire 

 a little produced, whorls rapidly increased ; suture 

 deep, aperture Large ; umbilicus small. 



A. Adams. Ann. and Mag. of Nat. Hist., 18C1. 



Ilab. Tsu-Sima, Japan. 



Species Kj. (Fig. a, h, Mus. Adams.) 



^Vdeorbis corniculi-.m. Ade. testd globosd, subdiaphand, 

 minutissime striata; spird parvd, anfractibus rapidc 



April, 187-1. 



