CLASSIFICATION OF HELICES. 



Synopsis of genera of Endodontidce. 



XXIX 



Polyplacognatha j ^ anctum > P- 6. 

 \ Laoma, p. 8. 



f Flammulina, p. 10. 

 I Phasis, p. 36. 

 Endodontida3<{ Haplogona { Amphidoxa, p. 39. 



j Endodonta,p. 20. 

 (^ Pyramidula, p. 42. 

 | Pararhytida, p. 52. 



Synopsis of genera of Helicidce. 



Protogona <( 



f Penis retractor trifid, Praticolella, p. 67- 

 Jaw ribbed | ( lip well reflexed, Pofy- 



N. American j p retr gi , ! ^ra, p. 68 



| lip unexpanded, Po/t/- 

 t gyrella, p. 78. 



Anat. unknown, f whorls rounded, S. American, Poly- 



S. Amer. Papua. -< gyratia, p. 81. 



Shell many-( whorls keeled, Papuan, Coxia, p. 83. 



whorled. 



Jaw smooth, S. African, Dorcasia, p. 172. 



f No blind sack 

 I on vagina \ 



Macro- 

 ogona 



A blind sack-} 

 on vag. or | 

 sp. duct. 



Keeled, emb. whorls decussate, columella short, 

 with convex lobe or tooth, Stylodonta, p. 149. 



f Eggs or young Not keeled, columella concave, lip narrow, Heli- 

 very large cophanta, p. 151. 



Not keeled, lip very wide, colored, Acavus, p. 



153. 



Keeled; lip and columella wide, colored, Pyrochi- 

 Eggs of mod- lus, p. 154. 



rate size Columella narrow, lip not bright, Atnpelita, p. 



166. 

 Quoit-shaped, yellow, finely striate, Macrocyclis, 



p. 165. 



! Quoii-shaped, dark and solid, Pedinogyra.. p. 158. 

 Helicoid "j Subtrochiform, rough above, smooth below, Ano- 

 1 glypta, p. 159. 



f Apex spirally lirate, suture crenulate, Caryodes, 

 Shell Bulimoid I p. 161. 



j Apex beaded or smoothish, suture even, Panda. 

 ( p 163. 



Shell 



f Thysanophora, p. 54. 

 Teleophallogona -< Sagda, p. 58. 



{Zaphysema, p. 65. 



