ADEOEBIS.— Plate II. 



cresce/ifibus, ultimo magna, rotunda; umhilico an- 

 gusto, casta marginato ; aperturd magnd. 



The little horn Adeoebis. Shell globose, a little 

 transparent, very minutely striated ; spire small, 

 wborls rapidly increasing, last large, rounded ; 

 nrabilicus narrow, bordered ^vith a rib ; aperture 

 large. 



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



Ilab. Mine Sima, Japan. 



Species 17. (Fig. a, 6, Mus. Brit.) 



AoEonBis Angasi. Ade. testa discoided, valde depressd, 

 tenui ; spird parvd, planulatd, anfractibus paucis, 

 parvis, rapide creseentibus, ultimo expanse, striata, 

 ad suiuram crenulato, ad periphcriam acute cari- 

 nata et conspicue crenatn ; vmbilico et aperturd 

 maximis. 



Angas's Adeop.bis. Shell discoidal, much depressed, 

 thin ; spire small, flat, whorls few, small, rapidly 

 increased, last expanded, striated, crenulated at 

 the suture ; sharply and conspicuously keeled 

 at the periphery ; umbilicus and aperture very 

 large. 



A. Adams. Proc. Zool. Soc, 1861. 



Hab. Australia. 



This beautiful little shell was collected by Mr. G. P. 

 Angas. 



Species 18. (Mus. Brit.) 



Adeorbis n.ujula. Ade. testa depressd, subdiscoided ; 

 spird paula exsertd, anfractibus roiundis, lente 

 cresceiilibus ; umbilico mediocri, marginata, aperturd 

 subratundd. 



The littix dwarf Adeorbis. Shell depressed, rather 

 discoidal ; spire a little exserted, whorls rounded, 

 slowly increased ; umbilicus moderate, bordered, 

 aperture rather rounded. 



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



JIab. Miuo-Sima, Japan. 



Species 19. (Mus. Adams.) 



Adeorbis subangulata. Ade. testa solidtiisculd ; spird 

 paulo exsertd ; anfractibus subangulatis ; ultimo 

 anfractu subelevata, propS suturam gibbosa, sub- 

 angulato, infrcb latiuscula, obscure angnlato; umbilico 

 prof undo, angustiitsculo, margine acuta; aperturd 

 subavatd, labia externa, superne sinuatim producto. 



The slightly angular Adeorbis. SheU rather solid ; 

 spire a little exserted ; whorls rather angular ; 

 last whorl a little raised, gibbous and obscurely 

 angular near the suture ; umbilicus deep, rather 

 narrow, with a sharp edge ; aperture subovate, 

 outer lip sinuously produced above. 



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



Hab. Gotto Islands, Japan. 



Species 20. (Fig. a, b, Mus. Adams.) 



Adeorbis diaphana. Ade. testd globosd, diapdiand; 

 spird parvd, anfractibus rotundis ; ultima anfractu 

 injiato ; umbilico parvo ; aperturd subratundd. 



The transparent Adeorbis. Shell globose, trans- 

 parent, spire small, whorls round ; last whorl 

 inflated ; umbilicus small ; aperture rather round. 



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



Hab. Gotto Islands, Japan. 



Species 21. (Fig. a, b, Mus. Adams.) 



Adeorbis patrdelis. Ade. testd semipellucidd, depressd ; 

 spird paulo productd, anfractibus obscure biangulatis, 

 ultima infrd planiiisculo ; umbilico angustiitsculo ; 

 aperturd magnd, labia columellari rectiiisculo. 



The related Adeorbis. Shell semipellucid, depressed, 

 spire a little produced, whorls obscurely biangular, 

 the last rather flattened beneath ; umbilicus rather 

 narrow; aperture large, columella lip rather 

 straight. 



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



Hab. Mino-Sima, Japan. 



Related to Adeorbis Japoinca, but with more elate 



spire. 



