SUPPLEMENT. 209 



in the Ain and Jura) is remarkable, and may indicate an 

 ancient estuary of the Rhone. Yar. octona. F. Clacton (A. 

 Bell) ! 



P. 56. BARLEEIA RTJBRA. F. Pisa (Manzoni); Palermo 

 (Calcara). E. Algeria (WeinkaufF) ! ; Malta (Mamo). 



P. 60. JEFFREYSIA OPALINA. Orkneys (Thomas) ! 



P. 65. SKENEA PLANORBIS. F. Uddevalla (Crosskey and 

 Robertson)! Yar. trochiformis. Specimen almost scalariform. 

 Var. maculata. Madeira (Watson) ! Yar. hyalina. Shetland. 



P. 69. HOMALOGYRA ATOMTis. F. Uddevalla (Crosskey and 

 Robertson)! E. Dalmatia (Brusina)!; probably Rimini (v. 

 Miihlfeld, as Helix nand). 



P. 71. H. ROTA. Balta Sound (J. G. J.) ; Dublin Bay 

 (Waller)! F. Grand, Yienna basin (Mus. Yindob.)! E. 

 Lessina, Dalmatia (Mus. Berolin.)! ; Madeira (Watson)!; per- 

 haps Rimini (v. Miihlf., as Helix tricarinata). 



P. 74. CJSCTJM. The Marquis de Folin has given (Journ. 

 Linn. Soc. 1868, x. p. 254) an excellent account of the forma- 

 tion of the septum. He denies its value as a character for 

 the construction of genera, as proposed by Dr. P. Carpenter. 



P. 75, 1. 11 from top, for " Odontostoma " r. l( Odontidium ". 



P. 75. C. TRACHEA. Dublin and Strangford (Waller). F. 

 Pisa (Manzoni). C. trachea of Homes is C. mammillatum of 

 S. Wood. E. Madeira (Watson)! Orthocera trachea of 

 Fleming inhabits the West Indies and Singapore, and may 

 have come from a bath-sponge. 



P. 77, 1. 16 from top, for " Spirolidium Mediterraneum" r. 

 " Dentalium corniculum" ; the former is the fry of C. glabrum. 



P. 77. C. GLABRUM. F. Denmark (Mb'rch). E. Med. and 

 Adr. ! The fry is slightly twisted, as in C. trachea. 



P. 79, 1. 5 from top, for " Odontostoma Icevissima " r. 

 " Odontidium Icevissimum" . 



P. 80. TTJRRITELLA TEREBRA. F. Throughout Europe. 



P. 85. TRFNCATELLA TRUNCATULA. E. Madeira, with 

 Lowe's species (Watson and Paiva)! 



P. 93. SCALARIA TREVELYANA. E. G. Gascony (Lafont 

 and De Folin) ! ; Naples, 60 f. (Acton) ! 



