152 CANTHARIDUS. 



suture in a conspicuous manner ; granules rounded, subobsolete ; 

 apex acute, aperture obliquely quadrate, smooth, nacreous, of a 

 rosy silver hue, with one conspicuous angular groove in the 

 middle ; columella rounded, truncate below, not tuberculate ; base 

 convexly rounded, subumbilicate, elegantly lirate, the lirse being 

 granular and alternating large and small, tessellate and radiately 

 striate. Alt. 18, diam. 14 mill. 



The young are distinctly umbilicate. Many specimens have be- 

 tween the larger line smaller ones on the whorls of the spire. The 

 species differs especially from all previously described in the roundly 

 convex base, and non-tuberculose columella. It comes very near to 

 T. zebrides Ad. which is common at Moreton Bay, and with which it 

 has been previously confounded ( Tenison- Woods'). 



Moreton Bay. 



J. E. TENISON- WOODS, in Proc. Linn. Soc. N. S. W. iv, p. 109 

 (1880). 



THALOTIA ZEBUENSIS A. Adams. Testa elevato-conoidea, per- 

 forata, atro-fusca, fasciis longitudinalibus ornata, transversim sul- 

 cata ; anfr. planulatis, ultimo rotundato, basi convexa ; labio sub- 

 recto, antice reflexo, dilatato ; apertura subcirculari, inttis alba ; 

 labro intus Isevi, atro-marginato. (A. Ad.) 



San Nicholas, Id. of Zebu, in sandy mud, 6 fms. (Owning.) 



A. Ad. in P. Z. S. 1851, p. 172. 



THALOTIA STRIGATA A. Adams. Testa turrita-conica, perforate, 

 albida, fasciis latis rufo-fuscis radiata ; anfr. in medio angulatis, 

 porcis transversis subgranulosus, interstitiis longitudinaliter striatis 

 ornata, basi convexa, concentrice porcata ; urnbilico aperto ; aper- 

 tura subrotundata ; columella subflexuosa, basi truncata ; labro 

 intus lirato, margine crenulato. (A. Ad.) 



Swan Point, N. Australia (Dring). 



A. ADAMS, P. Z. S. 1851, p. 173. 



THALOTIA ZEBRIDES A. Adams. Testa turrito-conica, subper- 

 forata, virescenti, lineis atropurpureis longitudinalibus ornata, 

 porcis transversis coufertis sculpta ; longitudinaliter striata, basi 

 convexa ; umbilico subobtecto ; columella sinuata, callo terminata ; 

 labro intus lirato, margine atro-purpureo articulate. (A. Ad.) 



Habitat unknown. 



A. ADAMS in P. Z. S. 1851, p. 173. 



THALOTIA SUTURALIS A. Adams. Testa conica, subperforata, 

 virescenti, lineis purpureis longitudinalibus undulatis ornata ; trans- 



