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PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



ON DESPCENA CINNAMOMEA, n.sp., AND TYPE OF A NEW SUB- 

 GENUS, CSEESODESPCEJYA, WITH NOTES ON SOME ALLIED 

 FORMS. 



By E. R. SmES, B.A., F.L.S., etc. 



Read \\th Maij, 1900. 



Despcexa (Cheksodespcena, n.subgen.) cinnamomea, n.sp. 



Testa depressa, tenuis, nitida, spira paruin elevata, cinDamomea ; 

 anfractus 5£, regulariter et mediocriter accrescentes, plano-convexi, 

 sutura sub-iinpressa, ultimus basi convexiusculus, callo tenui nitido 



Despcena cinnamomea, n.sp. 



obductus, juxta columellam excavatus ; apertura angulato lunaris, 

 margine columellari plica dentiforini intrante munito ; perist. simplex, 

 tenue. Alt. 16, diam. max. 8-75 mm. 



Hal, — Between Ayabamba and Santa Rosa, Ecuador. 



The only other species of Despcena that I am acquainted with from 

 Ecuador is D. Cousini, Jousseaume (described as a Proserpinella). That 

 species, however, is of a yellow colour and smaller in size, though 

 the number of whorls appears to be the same, whilst, from the original 

 figure, the shells appear to differ considerably in outline. I have 

 ventured to propose a new subgenus— of which the above-described 

 species may be taken as the type— to include the Continental forms, 

 which differ from those found in the West Indian Islands in the 



