368 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 85 



CHONDROPOMA (CHONDROPOMORUS) CANESCENS NIPENSE, new subspecies 



Plate 33, Figuke 9 



This race comes from the region about Nipe Bay, Felton, Antilla 

 and Cayo del Rey. It is readily distinguished from the rest in 

 being much slenderer and with the whorls less inflated. 



The type, U.S.N.M. no. 355085, comes from Felton. It has 5.8 

 whorls remaining and measures: Length, 15.1 mm; greater diameter, 

 7.0 mm ; lesser diameter, 5.6 mm. 



CHONDROPOMA (CHONDROPOMORUS) CANESCENS ALLENI, new snbspeciea 



Plate 33, Figure 5 



This race comes from the region about Sagua de Tanamo. In 

 many ways this shell resembles C. (6'.) canescens 'perplexum, but 

 the adult shells, however, are very readily distinguished from it by 

 the dark chestnut-brown axial zone on the inside of the outer lip 

 immediately within the peristome. 



The type, U.S.N.M. no. 367774, has 5.3 whorls remaining and meas- 

 ures: Length, 14.4 mm; greater diameter, 6.8 mm; lesser diameter, 

 5.7 mm. 



CHONDROPOMA (CHONDROPOMORUS) NEGLECTUM (Gundlach) Pfeiffer 



Plate 34, Figuke 5 



1856. Cyclostoma ticglectum Poey, Memorias sobre historia natural de la Isla 



de Cuba, p. 4, nomen nudum. 

 1858. Cyclostoma neglectum (Gundlach) Pfeiffee, Malakozool. Blatter, vol. 5, 



pp. 46-47. 

 1858. Chondropoma revinctum Pfeiffek, Monographia pneumonopomorum viven- 



tium, suppl. 1, p. 137. 



Shell very elongate-conic, of hom-color ground color, with inter- 

 rupted bands of brown having both an axial and spiral arrangement. 

 The long axis of the dark streaks is parallel with the spiral sculpture. 

 In addition to this, the ribs are flesh-color in irregular blotches. 

 The inner peristome is pale brown at its outer margin, while the 

 outer shows the dark spiral bands. There is also a very dark brown 

 band encircling the top of the nuclear turns. Nuclear whorls 2, 

 rather large, forming a blunt apex ; the first 1.5 well rounded, smooth, 

 the last half with fine axial threads. There is an oblique band of 

 brown at the termination of the nuclear turns, marking a septum or 

 place for disjunction. Postnuclear whorls almost inflated, strongly 

 rounded, marked by threadlike, somewhat retractively curved, axial 

 riblets, which at more or less irregular intervals become strengthened 

 at the summit where several of them frequently fuse to form a tooth- 

 like projection, which is appressed to the preceding turn. In addition 

 to the axial sculpture the whorls are marked by spiral threads, which 



