SUPPLEMENT. 213 



P. 149. — 0. in distinct a. F. Vienna basin, and Italv ! 

 E. Arcachon (Lafont) !; Algeria (Weinkauff) !; Venice (G. v. 

 Martens)!; Dalmatia (Brusina)!; Madeira (Watson)! I have 

 a specimen from the Mediterranean, which is furnished with a 

 slight tooth-like fold on the pillar. 



P. 151.— 0. interstincta. N. of Hebr., 189 f. (C. and T.). 

 E. Med. and Adr. ! Var. terebelJum. F. Vienna basin and 

 Italy ! E. Med. and Adr. Strombus obliquatus, v. Miihlf., 

 Auricula striata, G. v. Martens, and Truncatella exilis, Menke. 

 Var. siduralis. F. Selsea (A. Bell) ! 



P. 154. — 0. spiralis. F. Portrush (Portlock and A. Bell) ; 

 Monte Mario (Bigacci) ! E. G. Gascony (De Folin) !; Adri- 

 atic (Stossich) ! 



P. 155.— 0. eximia. Ni of Hebr., 170 and 189 f. (C. and 

 T.) ; St. Magnus Bay and Unst, 45-100 f. (J. G. J.). Apex 

 sometimes truncated. 



P. 156. — 0. fenestrata. F. Italy and Bhodes ! E. G. 

 Gascony (De Folin) ! ; G. Naples (Stefanis) ! Chemnitzia 

 Bigacci, Conti. 



P. 158. — O.excavata. F. Largs, Ayrshire (Landsborough) ; 

 Monte Mario (Bigacci, as Rissoa trinodosa of Bayneval)!; 

 Bhodes (Mm J. d. PI.) ! E. G. Gascony (De Folin) ! 



p. 160. — 0. scalaris. Unst. F. Italy. E. Madeira (Wat- 

 son) ! Var. rufescens. N. of Hebr., 189 f. (C. and T.). 



P. 162. — 0. RHEA. F. Italy ! Parthenia fasciata, Forb., 

 is probably the young. 



p. 164. — 0. lactea. F. Belfast and Selsea (A. Bell)!; 

 Vienna basin (Homes) !; Bhodes (Mus. J", d. PL) ! 



p. 167. — 0. pusilla. Birterbuy Bay (Walpole) ! F. Vi- 

 enna basin, Italy, the Morea, and Bhodes ! E. Dalmatia 

 (Brusina) ! 



P. 169.— 0. Scill^. N. of Hebr., 170 f. (C. and T.). F. 

 Norway, Vienna basin, and Italy ! E. G. Naples (Stefanis) ! 

 Var. compactilis. St. Magnus Bay, 



p. 170.—O. acicula. F. Norway and Italy ! E. Loffo- 

 den I., 300 f. (Sars). I have a specimen from the Gulf of 

 Naples, which exhibits a conspicuous tooth. Var. ventricosa : — 



