296 PROCEEDINGS OF THE NATIONAL. MUSEUM Vol.89 



slightly fluted and marked by concentric lines of growth. Operculum 

 typically annularid. 



Tliis species ranges over the central portion of Pinar del Rio, 

 breaking up into several subspecies. 



KEY TO THE SUBSPECIES OP ANNULARIA (ANNULAROPS) CORONADOI 



Shell small, height less than 7 mm coronadoi 



Shell larger, height more than 10 mm. 



Axial riblets projecting strongly above the suture acervata 



Axial riblets not projecting strongly above the suture spurca 



ANNULARIA (ANNULAROPS) CORONADOI CORONADOI ([Arango] Poey) 



Plate 32, Figure 4 



1867. Cyclosioma coronadoi [Arango] Poey, Repert fisico natural Isla de Cubana, 

 vol. 2, p. 174. 



Poey credits the manuscript for his description to Arango and states 

 that Arango collected it at "Jaruco." This is undoubtedly Hoyo de 

 Jaruco, a famous sink in the Sierra de la Chorrera. The race ranges 

 from the Costanera de San Vicente and El Queque through the 

 mogotes of Laguna de Piedras. 



It is easily distinguished from the other two subspecies by its much 

 smaller size. 



The specmien figured, U.S.N.M. No. 356171, was collected by 

 Wright at Vinales. It has a little more than 3 whorls remaining and 

 measures: Length, 6.8 mm.; greater diameter, 5.1 mm.; lesser diam- 

 eter, 3.8 mm. 



ANNULARIA (ANNULAROPS) CORONADOI ACERVATA (Arango) 



Plate 32, Figure 3 

 1881. Choano'poma acervatum Arango, Proc. Acad. Nat. Sci. Philadelphia, p. 15. 



This subspecies was described by Arango as coming from *'Las 

 Lagunitas," Pinar del Rio. It ranges from there north through 

 Cayos de San Felipe and the mogotes at Kilometer 14, between Pinar 

 del Rio and Vifiales. 



It almost reaches the size of A. (A.) coronadoi spurca, but differs 

 from that in having the lamellose axial ribs developed into much more 

 prominent projections, which here extend up on the preceding whorl. 



The specimen figured, U.S.N.M. No. 483464, is a cotype from 

 Arango. It has almost 4 whorls remaining and measures: Length, 

 9.8 mm.; greater diameter, 6.3 mm.; lesser diameter, 5.2 mm. 



ANNULARIA (ANNULAROPS) CORONADOI SPURCA (Aguayo) 



Plate 32, Figure 1 



1856. Cyclosioma sordidum (Gundlach) Pfeifper, Malakozool. Blatter, vol. 3, 

 p. 39. Not Cyclosioma {Cy dolus) sordidum Pfeiflfer, Proc. Zool. Soc, 

 London, 1855, p. 103. 



