112 THE NAUTILCS. 



Caballos, a mountain some three miles to the East of Las Casas and 

 across the Casas River. 



GuncUacli visited tlie Island about the year 1854 and collected all 

 the species previously described and some olliers which were de- 

 scribed by Poey and Ffeiffer. These were : 



Chrondropoma dissolutum, Pfr., a species so near Chondropoma 

 pictum that it may be worthy of a varietal position only. 



Trochatellu luleo-apicata, Poey. Troclisilella callosa, Poey. 



Helix (Jeanneietia) pilyonesioa, PlV., which so far as studied 

 does not appear to be distinguishable save, in size from the common 

 mullistriiita.^ 



Helix (Cysticopsis) comes, Poey (near cubensis, Pfr.). 



Glandinella (Bulimus) poeyanus, Pi'r., together wiih a new genus, 

 Pinena, which is rej)iesenled by lour species only two of which 

 were described from the Isle of Pines. These were: Pineria 

 bejithiana, Poey, and Pineria terebra, Poey. The latter is not 

 only one of the rarest, but also one of the most curious, of land 

 shells. 



The only addition to the fauna of the Isle of Pines since Gundlach 

 is Cerion pinen'tiin, Dall, and a variety of this species is claimed by 

 its discoverer to be the smallest of the genus. 



It was Dr. de la Torre's hope to find some new thing in the Sierra 

 de la Canada in the inteiior of the Island. But this range proved 

 to be a quartz formation covered wiih pine trees,* which suiely have 

 the right of way, so far as native vegetation is concerned, on the 

 Island. The common grass of this region is Hi/pericinn yalioides, 

 Lam. At the foot of the mountain, however, we collected 



Oleacina oleacea, Fer. Subulina oclona, Brg. 



Helix (Jeanneretia) pityonesica, Pfr. Thysanophora vortex, Pfr. 



On the Sierra de Casas we collected all the known species from 

 that locality, C/rocoptis pnn'nnsa, Mor., rather plenlifull)'. There 

 seemed to be two forms of this species, one which was stout and 

 large, the other much more slender, but fully as long. Near Nueva 



'Tlie generic position of muJtistriaia is still problematical, and can only be 

 definitely established by an examination of the soft parts. 



' Pinus caribsea llorelet. This tree grows also in Western Cnba, Florida and 

 the Bahamas, and until recently (1904) has been confused with Pinus cubevsia 

 Griseb., the pine of Eastern Cuba. 



