390 ON MENKE's AUSTRALIAN SHELLS, 



LlTTORINA HUGOSA, No. 23, p. 9. 



L. testa globoso-conoidea, solida, sordide albida, transvcrsim sulcato- 

 striata ; anfractibus quinque ad sex : ultimo rrntricoso, rotmdato 

 ■infra, spiv® brevis acuta: totis plicato-rugosis ; apertures ovata fauce 

 rufa. Long. 9, lat. 6 - 5, alt 5-5 liu. 



Sab. On limestone rocks, Arthur's Head, at the entrance to 

 Swan Kiver. 



Similar to, but distinct from L. irrorata, Menke. 



LlTTORINA ACUTA, No. 24, p. 9. 



L. testa ovato-conoidea, solida, albida, nitida, transversim tenuiter 



striata; anfractibus septem : ultimo infra medium subangulato, supra 

 unguium, spires mediocris acuta? inferius zona coerulescente cinctis ; 

 apertures ovatce fauce brunnea, anterius in labro fascia alba. Louo-. 

 8'5, lat. 5-5, alt. -5 lin. 



Hab. Calcareous rocks, Western Coast. 



Allied by habit and size to L. obesa, Sowerby. [This seems to 

 be the widely dispersed L. mauritiana, Lamarck ( Phasianella) .~\ 



Natica sagittata, No. 30, p. 10. 



N. testa subglobosa, laevi, nitida, caesia, lincis longiludinalibus densi 

 jlexuosis, ad basin et infra suturam macularum subrotuudarum serie 

 in medio ultimi anfractus macularum sagittatarum acuminibus suis 

 dextrorsum spectantium rufarum seriebus tribus picta ; spira brevi • 

 umbilico calli columellari albo simplici angustato, canaliculato. Lone. 

 4-8 ; lat. 4, alt. 3-5 lin. 



Hab. Western Coast. 



Similar in habit and size to N. marochiensis, Lamarck; but 

 differs in coloration and in the form of the umbilicus. 



[I refer the South Australian X. marochiensis to Menke's species." 1 



