ZTZIPHTNUS. 313 



ZUA. Leach. A genus described under the word " Cionella." 



The manuscript name by Leach having been published by Grray, 



claims the priority. 

 ZTJEAMA, Leach. A sub-genus of Helix. H. pulcheUa, Auct. 



Gray's Turton, p. 41. 

 ZTZIPHINTJS. Leach. MS. dray, 1840. Trochus zyziphi- 



nus and similar species. 



