NEW MOLLUSKS FROM CAMAGUEY AND SANTA CLARA 

 PROVINCES, CUBA. 



By Carlos de la Torre, 



Of the University of Havana, 

 and 



John B. Henderson, 



Of Washington, District of Columbia. 



The new mollusks herein described are of the genera Opisthosiphon 

 and Eutudora only, and are all from the Cubitas range of mountains 

 in Northern Camaguey or from certain detached portions of the system 

 lying to the east near the boundary line of the Oriente Province, or 

 to the west, near, or just over, the boundary line of the Santa Clara 

 Province. New species of other genera from the same general region 

 will be published in a forthcoming paper, when a full discussion of 

 the notable features of this somewhat isolated faunula may more 

 properly be presented. A brief description of the Sierra de Cubitas 

 has, however, already appeared. 1 A few species of the Urocoptidae 

 from this region have been described, and these will be included in 

 the forthcoming paper referred to. But one species of Opisthosiphon 2 

 of this region has heretofore appeared in print, and that one is herein 

 republished in order to complete this list of the Annulariidae. 



As one of the genera and two of the subgenera to which all these 

 new species are referred are of so recent creation, it may be well to 

 refer to their descriptions in the Proceedings of the United States 

 National Museum (vol. 58, pp. 49-82). The subgenus Opisthosiphon 

 includes species of the genus Opisthosiphon destitute of spiral sculpture 

 outside of the umbilical walls, the typical subgenus admitting these 

 species possessing spiral sculpture on the spire of the shell even though 

 obsolete. 



The genus Eutudora includes species with a typical Tudoroid 

 operculum but having some form of breathing device to enable the 

 animal to obtain air when the aperture is closed by withdrawal of the 

 operculum. The subgenus Eutudorops includes members of Eutudora 

 that possess an axial sculpture rendered wavy or articulate by more 

 or less obsolete spiral cords. 



> Nautilus, vol. 29, No. 2, p. 17, June, 1915. 



* 0. berryi Clapp, Nautilus, vol. 32, No. 3, p. 86, January, 1919. 



Proceedings U. S. National Museum, Vol. 59— No. 2369. 



247 



