OF CONCHOLOGY. 11 



Gadinia costata, Krauss. 



Mouretia costata, Krauss. Sud afrischen Mollusken, Stuttgart, 



1848. 

 Gadinia costata, (Krauss,) H. and A. Adams, Gen. Rec. Moll, 



vol. i, p. 4iQ'S. 



I have not been able to examine specimens or have access to 

 description or figure of this species, which is from South Africa. 



Gadinia conica, Angas. 



Gadinia conica, Angas, Descr. of new sp. of Moll, from N. 



S. Wales, in Proc. Zool. Soc. 1867, p. 115, No. 127, pi. 



xiii, fig. 27. List of Port Jackson Moll. P. Z. S., 1867, 



p. 220. 

 G. testa alba, conica ; costis fortioribus, irregularibus, radian- 

 tibus xxxviii ; extus rugis concentricis fortibus, intus alba. 



Convexly conical, white; strongly irregularly radiately ribbed j 

 ribs about thirty-eight in number, concentrically ridged. Apex 

 sub-central, white within. Alt. 2f lines, Ion. 3| 1., lat. 3 1. 



Ilab. Coodgee Bay, outside Port Jackson heads ; (Angas). 



The figure which accompanies the above description appears 

 to represent a young shell. The concentric ridges are promi- 

 nent, almost frills. 



Gadinia Angasii, Dall. 



Gadinia pentegoniostoma, Angas, (non Sby.), List of Port 



Jackson Moll., Proc. Zool. Soc, 1867, p. 220. 

 G. testa depressa, conica, alba; costis crebrerrimis radianti- 

 bus; intus Isevissime. 



A depressedly conical, white shell ; strongly radiately ribbed 

 and polished inside. Length nine lines. Coodgee Bay, outside 

 Port Jackson heads ; (Angas). 



The specific characters of all the species of Gadinia are so 

 faintly marked, that in the absence of information in regard to 

 the local habitation, many, if not all the species, might readily 

 be confounded. It may safely be assumed, however, that (ra- 

 dinia pentego7iiostoma -\- stellata Sby., from Middle America and 

 the Gulf of California, is not identical with a species, however 

 similar, from a totally distinct zoological province. If not the 

 adult of the preceding species, nor an importation, it may take 

 the name of G. Angasii. 

 Gadinia reticulata, Sby. PI. 2, figs. 1 to 9. PI. 4, figs. 1, 2, 8. 



Ilouretia reticulata, Sby., Proc. Zool. Soc, 1835, p. 6. (Hab. 

 Valparaiso, in err.) 



