CUBAN ANNULARIIDAE — TORKE AND BARTSCH 307 



riphery inflated, strongly rounded. Base inflated, strongly rounded, 

 openly umbilicated, marked by spiral cords, which are as strong as 

 those on the spire; the umbilical wall and the anterior portion of the 

 base are marked by slender, closely spaced, axial riblets; the umbilical 

 wall, in addition to this, bears slender spiral threads, which render 

 these riblets slightly nodulose. Aperture broadly oval; peristome 

 double, the outer moderately broadly expanded, the inner incon- 

 spicuously reflected over and appressed to the outer, separated at the 

 posterior angle. The breathing pore on the parietal wall is a little 

 anterior to the posterior angle and within the edge of the aperture. 

 Operculum typically eutudorid. 



We are recognizing two subspecies, which the following key and 

 descriptions will help to differentiate: 



KEY TO THE SUBSPECIES OF ANNULARIA (EUTUDORA) TRANSITORIA 



Shell of trochid outline transitoria 



Shell of very broadly trochid outline distincta 



ANNULARIA (EUTUDORA) TRANSITORIA TRANSITORIA, new subspecies 



Plate 33, Figure 4 



1878. Cisiula limbifera Arango, Contribucion a la fauna nialacologica Cubana, 

 pp. 22-23, in part. 



This subspecies has the shell much more narrowly turbinate than 

 A. (E.) transitoria distincta. In the type 6 of the strong spiral cords 

 are present between the summit and suture on the fu'st postnuclear 

 turn, 7 on the second, and 14 on the last. The umbilical wall bears 

 15 slender spiral threads. 



The type, U.S.N.M. No. 386051, was collected by Bartsch on the 

 Sierra del Grillo, Habana Province. It has 6.0 whorls and measures: 

 Length, 13.3 mm.; greater diameter, 10.2 mm.; lesser diameter, 

 8.0 mm. 



This subspecies ranges from Sabana de Robles east, tlu"ough the 

 Sierra del Grillo, Madruga to El Mogote, Ceiba Mocha, and to 

 Cabezas; in other words, it occupies those interior liills on the east end 

 of Habana Province, extending across the line into Matanzas Province. 



The animals of this species were collected by Bartsch in a stone 

 fence of the Finca El Ingles, near the Sierra del Grillo on July 15, 

 1928. He described them as follows: Flesh-colored with smoky 

 suffusion, darker on the sides. Head gray, modified by an endless 

 number of white dots. Snout a little paler than the dorsum. Ten- 

 tacles sooty, tipped with pale orange. Foot deeply, medially cleft, 

 smoky gray. Motion of the sides alternate. When in motion the 

 animal moves the shell along sidewise with a jerk. The shell is thus 

 carried forward in a series of jumps. 



223580—40 12 



