364 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 85 



CHONDROPOMA (CHONDROPOMORUS) REVINCTUM (Poey) 



1851. Cyclostotna revinctum Poey, Memorias sobre historia natural de la Isla 

 de Cuba, vol. 1, pp. 99, 106, pi. 5. figs. 24r-27. 



Shell elongate-conic, flesh-color, with various marblings, blotch- 

 ings, spottings, and streakings of brown; but no matter what the 

 superimposed color markings may be, there are always a number of 

 interrupted spiral bands of dark brown, both on the spire and base, 

 whose elements are arranged in both axial and spiral series. Aper- 

 ture pale brown, showing the spiral bands within which extend over 

 the peristome. Nuclear whorls 1.5, inflated, smooth, forming a trun- 

 cated apex with the sutural line of the first whorl, chestnut-brown. 

 Postnuclear whorls marked by retractively slanting axial riblets, 

 which are low and only moderately strongly developed and which are 

 gathered together into short and rather broad tufts at the summit 

 at more or less regular intervals. The spiral sculpture consists of 

 threads about as strong as the axial riblets, which are also not strongly 

 elevated, the two forming a screenlike sculptural pattern. The junc- 

 tions of the axial ribs and the spiral threads form scarcely perceptible 

 nodules, while the spaces enclosed between them are squarish pits. 

 Suture moderately constricted. Periphery with a feeble angulation. 

 Base moderately long, well rounded, moderately broadly umbili- 

 cated, marked by the continuation of the axial riblets and spiral 

 threads, which increase in size from the periphery toward the umbil- 

 icus, those within the umbilial wall being a little stronger than those 

 immediately outside. Aperture broadly oval; peristome simple. 

 Operculum paucispiral with submarginal nucleus, the outer surface 

 covered with a fine thin granular calcareous deposit. 



Of the animal of Oho'ndropama {C hondrop07no7*us) remnctwrn 

 revhictuin Bartsch's field notes state : 



"Animal pale gray with olivaceous tinge; dorsal part covered with 

 ever so many tiny white dots. There is a pink area behind the ten- 

 tacles. Tentacles faintly tinged with orange a little above the base, 

 which is the general body color, the expanded tip dusky. Sides of 

 body pale olivaceous. Sole of foot deeply cleft, a little more yellow- 

 ish than the sides. Abundant on trees and in the rubbish at their 

 base." 



Of Chondropoma {Chomdropomoims) revinctum hUerranumi he 

 says: 



"Animal smoky gray with greenish tinge, pinkish about the edges. 

 Sole of foot a little paler, deeply cleft." 



This species ranges from the coast at Punta San Juan de los Per- 

 ros and Punta Alegre inland to the Dos Sierras near Zulueta, Santa 

 Clara Province. We are recognizing two subspecies. 



