XV 



PULMONATA — STYLOMMATOPHORA 



441 



Ariolimax^ Greomalacus^ Anadenus (subg. PropTiysaon)^ Hem- 

 pliillia^ Crypto sir acon^ Binneya^ Helix (see below), Coehlostyla^ 

 Bulimus (subg. Borus^ Orphnus^ Dryptus^ Sti^ophochilus^ Paehy- 

 otus, and possibly Caryodes, Leucotaenia^ Liparus^ Livinhacea, 

 Pachnodus, Raeliis^ Atopocochlis, Cerastus, Clavator belong here, 

 or with Buliminiis)^ Berendtia^ Rhodea, Pilsbry proposes ^ to 

 group Helix as follows : 



A. Eggs or young very large at birth : 



(1) Macroon^ incl. Acavus^ Pyrochilus (^ = Phania), Stylo- 

 donta^ 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 Ai^ionta^ Campylaea^ Chilotrema, 

 Pomatia, Macularia, Tachea^ Iherus^ Lep- 

 taxis, Eulota^ Pruticicola, Xeropliila ; 

 Borcasia^ Acusta, Plectotropis, Aegista, 

 CatJiaica^ Satsuma^ Eiihadra ; Lysinoe)^ 

 Gonostoma^ Leucochroa, Allognathus, 

 Oochlostyla^ Polymita^ Hemitrochus 

 (with sections Plagioptycha, Bialeuca, 

 Cory da, Jeanerettia), Grlypto stoma, Acan- 

 thinida, Vallonia. 



(S) Teleophalla. — Female system 

 without accessories, male with flagellum 

 and appendix on penis ; no epiphallus. 

 Sagda, Cysticopsis. 



(4) Epiphallophora. — Female sys- 

 tem without acessories, male with 

 epiphallus on penis; no appendix. 

 Caracolus (with sections Lucerna, Dentellaria, Isomeria, Lahy- 

 rinthus, Burycratera, Partliena, Polydontes, TJieliodomus, Cepo- 

 lis), Camaena (incl. Phoenieohius), Ohha, Chloritis (incl. Hadra), 

 Papuina, Planispira (subg. Cristigibha') . 



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

 into one piece. Polygyra (incl. Baedaloehila, Triodopsis, Meso- 

 don, Stenotrema), Endodonta (incl. Libera, Gharopa, Grerontia, 

 Therasia, and others), Patula, TrocJiomorpha, Anoglypta. 



(6) Polyplacognatha. — All accessory organs absent, jaw 

 composed of 16-24 separate plates. Punctum, Laoma. 



^Proc. Ac. Philad. 1892, p. 390. 



Fig. 295. — Example of the 

 Macroon group of Helix. 

 Helicophanta Souverbiana 

 Fisch., Madagascar, show- 

 ing large embryonic shell, 

 xf. 



