154 OXYCHONA, DRYM^EUS. 



The apical sculpture is very shallow, in some specimens not easily 

 seen, or subobsolete. 



N. DECUSSATUS (Reeve). Vol. xi, p. 178. 



Typical specimens from Cajabamba, with the color-pattern and 

 proportions of Reeve's figure, have the apex smooth and glossy, 

 sometimes showing faintly the characteristic Neopetrcem pattern of 

 sculpture in places. 



N. myristicus (Rve.) from the same locality has a similar apex, 

 faintly showing the sculpture. I think it will prove to be a form of 

 decussatus, with which it agrees completely in all but color-pattern. 



Genus OXYCHONA Morch. 

 O. BIFASCIATA (Burrow). Vol. xi, p. 181. 



Var. mimarum Ancey. Shell smaller and more elevated than the 

 type, weaker. Spire perfectly conic, the apex of the same color ; 

 whorls 6J, flat, the last flatly sloping, the base more flattened, en- 

 circled below the carina with two small brown lines. Aperture with 

 the upper margin straightly descending, hardly sinuous, angulate but 

 hardly produced in a beak ; the basal margin almost rectilinear be- 

 yond the angle, then forming an obtuse angle with the columellar 

 lip, the latter thickened and sloping. Peristome black-brown, the 

 parietal part whitish, slightly tinted with brown at the insertions. 

 Length 15, diam. 15 mill. (Ancey, Le Nat. 1901, p. 93). 



Brazil : Prov. Minas Geraes. 



Genus DRYM^EUS Albers. 

 D. ABYSSORUM (Orb.). Vol. xi, p. 192. 



San Lorenzo, prov. Jujuy, Argentina (Dr. Borelli). Mr. Ancey 

 (Boll. Mus. Zool. ed Anat. Comp. Torino, xii, no. 309, p. 12) con- 

 siders abyssorum, hygrohylaus and marmarinus of d'Orbigny to be 

 variations of one species. 



D. FDSOJDES (Orb.). Vol. xi, p. 201. 



Ancey reports it from Santa Cruz de la Sierra (P. Germain); the 

 specimens being entirely ochre yellow, with some irregular brown 

 flammules. The aperture is violaceous inside (Le Nat. 1901, p. 93). 



D. PEELII (Reeve). PI. 25, fig. 22. 



Vol. xi, p. 205. D. fordii, p. 205, is closely related to this 

 species, differing chiefly in the more strongly spiral coluinella, and 



