ZIZYPHINUS.— Plate IV. 



Hab. West coast of New Holland ; Menke. South Aus- 

 tralia; Angas. 



I have received specimens of this species from Mr. 

 Angas, of Adelaide, South Australia, collected by him at 

 Yorke's Peninsula. 



Species 27. (Mus. Cuming.) 



ZlZYPHINUS FILOSUS. Zizypli. testa subobtitse conicd, 

 solidd, anfractibus rotundatis, midique valide lirath, 

 liris lavibus, interstitiis excavatis, pracipue ad su- 

 taras ; violaceo-fuscd, immacidatd, liris flavescentibus. 



The corded Zizyphinus. Shell rather obtusely conical, 

 solid, whorls rounded, strongly ridged throughout, 

 ridges smooth, interstices excavated, especially at the 

 sutures ; violet-brown, unspotted, ridges yellowish. 



Trocltus filosus, Wood, Ind. Test. Supp. pi. 5. f. 23. 

 Trochus ligatus, Gould. 

 Trochus castmieus, Nuttall. 



Hab. Puget Sound ; Gould. 



A solid shell, regularly encircled throughout with smooth 



ring-like ridges, excavated in the interstices. Wood gives 

 no descriptive characters with this species, but he figures 

 it with uumistakeable accuracy. 



Species 28. (Mus. Cuming.) 



Zizyphinus decoratus. Zizypli. testa sitbpyramidali- 

 co/iicd, ad basin iumidiusculd, anfractibus concavo- 

 decUoibiis, nndiqiie rugoso-granalis, granis irregulari- 

 bus, interstitiis sub lente mitiute oblique striatis ; albidd, 

 viridi aut purpureo-griseo prof use variegatd. 



The embellished Zizyphinus. Shell somewhat pyra- 

 midally conical, rather swollen at the base, whorls 

 concavely sloping, rugosely grained throughout, 

 grains irregular, interstices beneath the lens obliquely 

 minutely striated ; whitish, profusely variegated with 

 green or purple-gi'cy. 



Trochus decoratus, Philippi. 



Hab. Brisbane waters. East Australia ; Strange. 



Of a more rugose-grained sculpture than usual, minutely 

 obliquely striated in the interstices. 



