|22 SYNOPSIS OF GROUPS. 



Bgt., diniensis Ramb., lunulata Kryn., ramburi Mab., danieli Bgt., 

 madritensis R&mb.,djabbarica Bgt., hierocontina W.,monicola Pal. 



Page 260, For setabulensis read setubalensis. 



Page 261, For lybica read libyca. 



Page 272, For musicola read muscicola Bgt., not Phil. It is a 

 synonym of erenophila Pfr. 



Page 274, For melaspince read malaspince. 



Page 305, For IT. cyrniaca read reveller ei Deb. See Journ. Conch., 

 1867, p. 311. 



Page 319, For leucorum read lucorum. 



Page 322, For nemoralis Miill. read nemoralis Linne*. 



Page 325, For v. augustata Rm. read v. angustata Rm. 



Page 325, For ff. rereyana read rerayana. 



Page 327, For IT. benthencourtiana read bethencourtiana. 



Page 327, For J?. riprocki read ripoehi. 



Synopsis of Families, Subfamilies, 

 Genera and Subgenera of Helices. 



NOTE. The numbers refer to pages of Vol. IX, whereon the 

 several groups are treated. Genera are in Roman, subgenera and 

 sections in Italic type. The sequence of groups adopted is from 

 those with simple to those with complex reproductive organs, and 

 represents in a general way the phylogenetic history of the family, 

 the Protogona being believed to be the primordial stock of Helicidce. 

 The inter-relations of the groups are shown on p. xxi, of Vol. IX. 

 The linear arrangement given below is necessarily unnatural, being 

 interrupted by the interpolation of the Teleophallogona and Macroo- 

 gona. 



[Trochomorpha belongs to the family Zonitidce. The position of 

 Solaropsis, Plectopylin, Chalepotaxis and some other groups is quite 

 uncertain.] 



Family ENDODONTID^ Pilsbry (Vol. ix, p. xxviii). 



Group POLYPLACOGNATHA Pils. 



1, Punctum Morse. 6. 2, Laoma Gray, 8. 



Phrixgnathus Hutt., 9. 



