CUBAN ANNULiARnDAE TORRE AND BARTSCH 237 



its antennae. Tentacles brownish at the apex. A dark longitudinal 

 streak is present between the neck and foot. Some individuals are a 

 httle more rusty in color." 



PARACHONDRIA (PARACHONDROPS) CHORDATA ([Gundlach] Pfeiffer) 



Shell elongate-conic, pale b^o^vn, marked by interrupted spiral 

 bands of brown. Aperture flesh colored within, showmg the spiral 

 bands inside. The nuclear whorls are strongly rounded ; the beginning 

 of the nuclear turns are smooth; the rest of the first turn is marked 

 by wavy, raised spiral cords, whUe the last turn is marked by dis- 

 tantly spaced, scalariform axial riblets. Postnuclear whorls strongly 

 rounded, marked by closely spaced, sublamellar axial riblets, which 

 become expanded at the summit, or several of them fuse to form 

 toothlike elements. The spiral sculpture consists of about 5 low, 

 rounded, broad cords which render the axial riblets scalloped. Suture 

 strongly constricted. Base moderately long, well rounded, narrowly 

 umbilicated, marked by 4 spiral cords. Another one is apparent 

 within the umbilicus. Aperature broadly oval; peristome double, 

 the outer broadly expanded, appressed to the preceding turn with 

 the parietal portion; the inner peristome slightly projecting, mod- 

 erately expanded, and reflected. Operculum thin, corneous, pauci- 

 spiral, with the nucleus halfway between subcentral and marginal; 

 the outside covered with a rather thick calcareous deposit, which 

 bears the usual retractively curved parachondroid ridges, which are 

 not strongly developed at this point. 



This species ranges through a large part of Oriente Provmce and 

 breaks up into a number of subspecies, which the foUowing key will 

 help to differentiate: 



KEY TO THE SUBSPECIES OF PARACHONDRIA (PARACHONDROPS) CHORDATA 



Both peristomes broadly, flariugly expanded. 



Shell large, more than 10 mm. long tanamensis 



Shell small, less than 8 mm. long baracoensis 



Both peristomes not broadly, flaringly expanded. 

 Sculpture strong. 



Axial riblets very closely spaced raayariensis 



Axial riblets less closely spaced. 



Spiral cords of base very strong songoensis 



Spiral cords of base not very strong guantanamensis 



Sculpture feeble chordata 



PARACHONDRIA (PARACHONDROPS) CHORDATA TANAMENSIS, new subspecies 



Plate 21, Figure 3 



In this race, which comes from El Coco, south of Sagua de Tanamo, 

 Oriente, both peristomes are broadly expanded. In this character it 



