GARRETT: ON POLYNESIAN MITRID^. 73 



On summing up the stations of the various Mitres^ it is in- 

 teresting to note that all the species embraced in each section or 

 sub-genus inhabit similar stations. 



All the typical Mitres as restricted; together with the sub- 

 genera Scabricula, Cancilla and probably Miityca are sand or 

 burrowing species. 



All the species of Nebidafia , Chiysavie, Thala, and Voliito- 

 mitra are reef shells. 



The sub-genus Zeia are probably sand Mih'as. 



All the species of Zierlina are littoral shells. 



The Strigatelld are all reef species. 



All the typical Tiirriciila, Costellaria and Callithea are sand 

 species, and all the species of Piisia are reef shells. 



The Cylindra and Imhricaria are sand species, and the 

 Dibaphiis and Mitroidea are reef shells. 



October, iSyg. 



HELIX VIRGATA monst. SINISTRORSA, and H. CA- 

 PER ATA VAR. ALB ID A, NEAR YARMOUTH, ISLE OF 



WIGHT. 



By C. ASHFORD. 



I lately took a perfect shell of this form, which is rather rare, 

 from the roadside hedge near Afton toll. gate. It is of the 

 common uniform brownish-yellow color. The briefest examina- 

 tion of the apex shows that it began wrong in ovo, and was not 

 perverted during infancy by external conditions. Near the same 

 spot I also found a beautiful albino of H. eaperata, the moUusk 

 as well as its shell being white. It belongs to the mottled or 

 freckled variety of that species, the transverse streaks of color 

 being replaced by translucent patches. 



