322 PROCEEDINGS OF THE NATIONAL MUSEUM Vol.89 



and the spiral keels form slender elongated nodules having their 

 long axis parallel with the axial sculpture, while the spaces enclosed 

 between them are almost impressed lines about twice as wide as the 

 axial ribs. Suture strongly constricted, but not channeled. Periph- 

 ery well rounded. Base moderately long, strongly 'Irounded, very 

 narrowly umbilicated, marked by the continuation of the axial ribs 

 and by strong spii-al keels; several less strong spiral keels are present 

 within the umbilical area. Here, as on the spire, the junction of 

 the axial and spiral sculpture forms weak tubercles. Aperture 

 broadly oval; peristome double, the inner scarcely exserted and re- 

 flected; the outer moderately broadly expanded, a little narrower on 

 the inner lip than the outer. Operculum typically annularid. 



This species ranges through the region about Santiago, Oriente 

 Province, and a number of the keys of the Doce Leguas group. 



KEY TO THE SUBSPECIES OF ANNULARIA (JUANNULARIA) ARGUTA 



Spiral cords between summit and suture 5 arguta 



Spiral cords between summit and suture 6 insularis 



ANNULARIA (JUANNULARIA) ARGUTA ARGUTA (Pfeiffer) 



Plate 37, Figure 4 



1858. Ctenopoma arguhim Pfeiffer, Malakozool. Blatter, vol. 5, pp. 188-189. 

 1858. Chondrojwvia arguium Pfeiffer, Monographia pneumonopomorum viven- 



tium, suppl. 1, pp. 138-139. 

 1878. Chondropoma elongatum Arango, Contribucion a la fauna malacologica 



Cubana, p. 10. 



This subspecies comes from the region of Santiago, Oriente Province. 

 It is easily distinguished from A. {J.) arguta insularis by the fact 

 that it has one less spiral keel, that is 5, between the summit and the 

 suture, and on the base. 



The specimen described and figured, U.S.N.M. No. 355896, was 

 collected by Gundlach at Santiago. It has a little more than 4 

 whorls remaining and measures: Length, 9.8 mm.; greater diameter, 

 5.3 mm.; lesser diameter, 4.6 mm. 



ANNULARIA (JUANNULARIA) ARGUTA INSULARIS, new subspecies 



Plate 37, Figure 6 



Bartsch collected this race on Cachiboca Cay and Cayo de Cruz, 

 both of the Doce Leguas group, off the south coast of Camagiiey 

 Province. It differs from typical A. (J.) arguta arguta in having 

 the extra spiral keel between the suture and on the base. The axial 

 riblets are also a little stronger and less closely spaced than in the 

 typical race. 



