''"isar''] PROCEIi^DJNGS OF Til 10 NATIONAL MUSEUM. 403 



Superfaiiiily KMIIJUIX )r;ij()SW/V. 



(Jcims OMPHALIUS IMiilippi. 



98. Tiochus (Oniphalius) Cooksoiii Siiiitli. 



'i:=(>. fllUcidlllN ISoni. 



Beach. 



James Island (Mas. No. 102505). A siiif^lc, pori'ert iiulividual, 

 measuring i inilliuieters in lieight and 7 niilliniclcrs in dianietei', not 

 (juite tlie same pioportions, l)ut no doubt belonging to the species de- 

 scribed by Smith. The sixicinuMi before me is beautifully blotched 

 with irregular wliitish spots, ou a ground color sonunvhat diirker than 

 the rest of the surface, forming ;i girdle above the umbilicus. It seems 

 strange thut the resemblance to (). faHcintm of the Antillean region 

 has not heretofore been noticed. A comparison with the very large 

 scries of /W.sry>r//<.s' in the National Museum shows that it is very closely 

 related to that species, if not identical. 



Family NEItlTID.K. 



fJoiiiiH NERITA l'.rii;;iiit;ir. 



99. Nerita scabricosta Jjiuii. 



^= N. ofiidld. S])_v 



Common on the beaches. 



Hood, Jan u%s, and Indefiitigable islands (Mus. Nos. I()li3.s;i, 1()2L'80, 

 102473). Fine hirge examples, many (piitc fiesh. 



SiiperlHiiiily ^^ YOOJ Jli^VNCJI 1 1 A. 



Family FISHUKELLID.F:. 



Gt',11118 FISSURELLA linignioro. 



100. Fissurella macrotrenia Sl>y. 

 Beach. 



Indefatigable Islaixl, one pcrlcd junior (Mus. No. 122129). 

 101. Fissurella rugosa .Sl)y. 



Bea<;h sIujIIs, in all conditions. 



James, Hood, Indefatigable, Duncan, and Chjithani islands. Nu- 

 merous e.\ami)les (Mus. Nos. 1023«)0, 102153, 1(»2317). The various 

 aspects of this |»rotean form were found on the beach margins of the 

 several islands named, in most instances in fair coiulition. 



102. Fissurella obscura «Sl)y, 

 ? =z F. riKjoHd Rl>y., variety. 

 Beach. 



Chatham Island (Mus. No. 122124). Several examples of this form, 

 which nuiy be regarded as probably a variety of the variable rugosa. 



