78 



THE NAUTILUS. 



the same general character. In the female, the septa of the 

 of the inner gill possess, close to the outer lamina, a marked 

 swelling, by which the female may be recognized at once (the 

 swellings are distinctly seen with a hand-lens). 



Thus Spatha wahlbergi differs from S. kamerunensis only by the 

 presence of a mantle connection below (or in front of) the branchial 

 opening, by which this opening becomes perfectly closed and 

 subtubular. Whether this is a general character, which disting- 

 uishes the subgenera Spatha and Aspatharia, remains to be seen. 

 There is no doubt, however, that this character indicates a 

 higher specialisation of S. wahlbergi, as compared with S. kamer- 

 unensis. Attention should be called to the fact, that in the 

 South American shells of the Hyriine-type, this mantle con- 

 nection anterior to the branchial is rather variable, and may or 

 may not form a generic character (Nautilus, 24, 1911, pp. 117, 

 118). 



A NEW CUBAN ZACHRYSIA. 



BY H. A. PILSBRY. 



Zachrysia ramsdeni n. sp. PI. 7, figs. 5, 6. 



The shell is depressed-globose, imperforate, of an olive-ocher 

 color, glossy. First If whorls smooth, following neanic whorls 

 irregularly wrinkled, the last whorl sharply striate above, the 

 base nearly smooth. The periphery is rounded, last whorl 

 descending in front. The aperture is very oblique; outer lip 

 slightly thickened, unexpanded. The base-columellar margin 

 is slightly concave, narrowly reflected and depressed, having a 

 very small nodule nearer to the columella than to the base. 



Alt. 13.5, diam. 17.5 mm.; 4 whorls (type). 



Alt. 12.5, diam. 15.8 mm. 



Manati, Los Canos estate, near Guantanamo, Cuba. Type 

 No. 117482 A. N. S. P., collectedly Charles T. Ramsden. 



This species resembles Z. emarginata Pfr. , but differs by the 

 much thinner peristome and especially the narrower base-colu- 

 mellar lip. This forms a wide, flat plate in emarginata, but is 

 much narrower in ramsdeni than in any other species of the 



