48 THE NAUTILUS. 



and it is indeed rare good fortune to be able now to associate 

 with a third the name of Dr. Carlos de la Torre of the Uni- 

 versity of Havana. No one has shown a keener or more sym- 

 pathetic appreciation for, or knowledge of, the shells of his 

 native land than has he. 



P. torrei differs from the two species of Priotrochatella previ- 

 ously described, P. constellata Morelet and P. stellata Velasquez, 

 in having the base of the shell smooth, instead of granulose as 

 in P. constellata, or with transverse plications as in P. stellata. 

 The sutural flange is less coarsely denticulate than in constellata, 

 more strongly than in stellata. In P. constellata the average 

 number of teeth on the periphery of the last whorl is less than 

 40, in P. torrei. between 40 and 50, and in P. stellata more than 

 50. P. constellata Morelet, 1 was described as from " Sierra de 

 Cristalles." In the southern part of the Isle of Pines there is a 

 hill called the Sierra de Cristales, but the entire local formation 

 is igneous and therefore this certainly was not the type locality 

 of the species. It is possible that some one told Morelet that 

 the Sierra de Casas was called the Sierra de Cristales, which he 

 misspelled. Poey 2 gives the habitat of constellata as "Sierra de 

 Caballa, esta sierra esta al Sud de la poblacion llamada Nueva- 

 Gerona." This locality is now definitely known as the Sierra 

 de Casas. 1 



Poey transposed the names of the two mountain ranges in the 

 northern part of the Isle of Pines, referring to the Sierra de 

 Casas by the name of Sierra de Caballa, and to the Sierra de 

 Caballas by the name of Sierra de Casas. Pfeiffer* repeats 

 Morel et's locality of Sierra de Cristales. Arango 5 in 1878 gives 

 the habitat of constellata correctly as ' ' En los paredones de las 

 faldas E. y. 0. de la Sierra de Casas situada al 0. de Nueva 

 Gerona en Isla de Pinos," probably as a direct result of Gund- 

 lach's own collecting. Crosse 6 repeats the last named habitat. 



i Morelet : Rev. Zool., p. 144, 1847. 



t Poey: Mem. Cuba, I, p. 116, t. 5, fig. 15-17, 1851. 



' To'dcl : Ann. Carnegie Mus., vol. X, plj XXVII. 



4Pfeiffer: Mon. Pneum., I, p. 334, 1852. 



r > Arango: Contribueion a la Fauna Malacologiea Cnbana, ]>. 45, 1878. 



o Crosse: J. de Conch., vol. 38, p. 310, 1890. 



