PULMONATA — STYLOMMATOPHORA 



441 



Ariolimax, Geomcdacus, Anadenus (subg. Proiiliy8aon),Hemfliill%a; 

 Cryptostracon, Binneya, Helix (see below), Cochlostyla, Buli7nus, 

 (subg. Bonis, Orjjhnus, Dryptus, Strophochilus, Fachyotus, and pos- 

 sibly Caryodes, Lcucotacnia, Liparus, Livinhacea, Paclinodus, Rachis, 

 Atojoocochlis, Cerastus, Clavaior belong here, or with Bidiminus), 

 Berendtia, Bhodea. Pilsbry proposes ^ to group Helix as follows : 



A. Eggs or young very large at birth : 



(1) Macroon, incl. Acavus, Fyrochilus ( = Fhania), Stylodonta, 

 Helicophanta. 



B. Eggs or young smaller or minute at birth : 



(2) Belogona. — Female genital system with dart sac and 

 mucus gland. Helix [restricted] (with 

 sections Arionta, Campiylaea, Chilotrema, 

 Fomatia, Mactdaria, Tachea, Iherus, Lep- 

 taxis, Eidota, FrvMcicola, Xcrophila ; 

 Borcasia, Acusta, Flectotrojns, Aegista, 

 Cathaica, Satsuma, Euhadra ; Lysinoe), 

 Gonostoma, Leucochroa, Allognatlms, 

 Cocldostyla, Folymita, Hemitrochus (with 

 sections Flagioptycha, Dicdcuca, Coryda, 

 Jeanerettia), Glyptostovia, Acanthinula, 

 Vallonia. 



(3) Tclcophalla. — Female system 

 without accessories, male with flagellum 

 and appendix on penis ; no epiphallus. 

 Sagda, CysHcopsis. 



(4) Epiphallophora. — Female system 

 without accessories, male with epiphallus 

 on penis ; no appendix. Caracal us (with 



sections Lucerna, Dentellaria, Isomeria, Lahyrinthus, Bnrycratera, 

 Farthena, Folydontcs, Thelidomus, Cepolis), Camaena (incl. Fhoe- 

 nicohiiis), Ohha, Ckloritis (incl. Hadra\ Fapuina, Flanispira (subg. 

 Cristigihha). 



(5) Haplogona. — All accessory organs absent, jaw soldered 

 into one piece. Folygyra (incl. Baedalochila, Triodopsis, Mesodon, 

 Sienotrema), Bndodonta (incl. Libera, Charopa, Gerontia, Therasia, 

 and others), Fatida, Trochommpha, Anoglypta. 



(6) Folyplacognatha. — All accessory organs absent, jaw com- 

 posed of 16-24 separate plates. Ftmctum, Laoma. 



1 rroc. Ac. Phlhtd. 1S92, p. 390. 



Fig. liStj. — Example of the 

 Macmu/i group of Helix. 

 IlcUcophanta Stmve^-biana 

 Fisch., Madagascar, show- 

 ing large embryonic shell ; 



