Henderson: Shells of the Isle of Pines. 321 



Habitat. — The exact locality of this diminutive Cerion has not been 

 given. 



24. Thysanophora boothiana (Pfeiffer). 



Helix boothiana Pfeiffer, Wiegm. Archiv, Vol. I, 1839, p. 351. 



Habitat. — Casas and Caballos Mountains, Punta del Colombo. 

 Probably occurring throughout the island. 



Specimens taken on the Casas and Caballos Mountains are all 

 smaller than the tj'pical forms of the Matanzas region and belong to 

 a race found in the district of the Organ Mountains of Pinar del Rio. 

 The constantly smaller size and coarser texture with deeper sutures 

 entitle the group to subspecific rank. I suggest the name pinarensis. 



25. Polygyra paludosa (Pfeiffer). 



Helix paludosa Pfeiffer, Wiegm. Archiv, Vol. I, 1839, p. 350. — Helix ramonis 

 D'Orbigny, in Sagra, Moll. Cuba, Vol. I, 1841, p. 142, PI. 8, figs. 1-4. 



Habitat. — -Nueva Gerona, and probably throughout the island. 

 This species is well supplied with names. Among them are lingulata 

 Ferussac, insularum Beck, bardenflehti B. Villa, etc. 



26. Pleurodonte (Thelidomus) auricoma (Ferussac). 



Helix auricoma Ferussac, Hist. Nat. Moll., XVIII, 1819, PI. 46, figs. 7, 9. — 

 Pleurodonte {Thelidomus) auricoma Pilsbry, Manual of Conchology, Vol. IX, 

 1894, p. 97; op. cil.. Vol. V, 1889, p. 62, PI. 3, figs. 26-30. 



Habitat. — Casas Mountains, Nueva Gerona; probably more or less 

 over the whole island. 



27. Cepolis (Jeanneretia) multistriata pityonesica (Pfeiffer). 



Helix pityonesica Pfeiffer, Mal. Blatt., 1854, p. 156. — Cepolis {Jeanneretia) 

 multistriata pityonesica Pilsbry, Manual of Conchology, Vol. V, 1889, p. 49, 

 PI. 10, fig. 94, & Pl. 32, fig. 60; op. cit., Vol. IX, 1894, p. 180. 



Habitat. — Caballos and Casas Mountains. 



28. Cepolis (Cysticopsis) comes (Poey). 



Helix comes Poey, Memorias Hist. Nat. Cuba, Vol. II, 1854, p. 29. — Cepolis {Cys- 

 ticopsis) comes Pilsbry, Manual of Conchology, Vol. V, 1889, p. 11; Op. cit.. 

 Vol. IX, 1894, p. 187. 



Habitat. — Caballos Mountains. 



29. Galba cubensis (Pfeiffer). 



Limncea cubensis Pfeiffer, Wiegm. Archiv, Vol. I, 1839, p. 354. — Calba cubensis 

 Baker, Lymnaeidae, 1911, p. 204. 



