Descriptions of New Species of Biillia and Marginella. 495 



No. 90. M. longivaricosa,Lam. Dillwyn's name, M. guttata, takes 

 precedence, as already mentioned. 



No. 92. M. camca, Storer. Sowerby should have made his fig. 

 103, the type of this species and not the variety. (See Storer's 

 figure and description in Bost. Jour. Nat. Hist., Vol. 1.) I doubt 

 whether the figures he has quoted as typical really belong to this 

 epecies. They seem more nearly related to M. guttata Dill wyn, but 

 may prove distinct from either. 



No. 97. M. pcrsicula, (Lin.) Larn. Mr. Sowerby judiciously re- 

 unites to this species the M. avellana, Lam., which differs only in 

 the smaller size and greater number of its spots, an unsafe char- 

 acter in this genus. 



No. 98. M.lineata, Lam. Named cingulata by Dillwyn in 1817, 

 who should be followed. 



