DRYMJ2US, MEXICO AND CENTRAL AMERICA. 71 



Von Martens changes the name to angasi on account of the prior 

 Bulimahis gabbi of Crosse & Fischer ; but the latter was described 

 as a Bulimulus, not as a Bidimus ; and as the present species is not a 

 Bulimulus, and was not described as such, I fail to see that there is 

 any conflict of names. 



Binney has figured the radula under the names B. irazuensis and 

 B. gabbianus. It has typical Drymceus dentition. 



GROUP OF D. TOTONACUS. 



D. SEMIMACULATUS Pilsbry. PI. 5, figs. 8, 9. 



See vol. xi, p. 297. Described from Colombia, but specimens col- 

 lected in Nicaragua by Gabb agree exactly with the types. The 

 locality, " San Nicolas, Central Nicaragua," given on the authority 

 of Tate (Amer. Journ. Conch., 1870, p. 156), should be deleted, 

 Tate's specimens, some of which are before me, proving to be typical 

 D. dominions. 



D. TOTONACUS (Strebel). PI. 5, figs. 11, 12, 13. 



Shell thin though pretty solid, somewhat glossy, and rather trans- 

 lucent; bluish- or milk-white, sometimes with occasional transparent 

 growth strise, but always with widely-separated, small, triangular or 

 rounded chestnut-brown spots, which are regularly placed in the line of 

 growth-striae, but more obviously along the spiral direction, forming 

 five narrow bands represented by these spots, more distinct on the 

 upper whorls where the spots are more closely placed. Sculpture of in- 

 conspicuous, fine longitudinal wrinkles with some coarser ones inter- 

 mingled, decussated by fine and close, sharply-engraved, short-waved 

 spiral lines, which are often interrupted and in places disappear on 

 the last whorl. Whorls 5f-6f , rather convex, the last somewhat 

 ventricose (in young shells weakly keeled). Peristome generally 

 expanded, the columellar margin narrowly reflexed above. 



Alt. 34.6, diam. 13.4, length of aperture, 11.7 mill. 



Alt. 28, diam. 11.2, length of aperture 8.6 mill. 



E.Mexico: Rancho de Qnilate, near Misantla (Dona Estefania, 

 Hoge); Ayua Caliente, also near Misantla (Dona Estefania). 



Bulimulus totonacus STREBEL, Beitr. Mex. Land- und Siissw.- 

 Conch. v, p. 84, pi. 5, fig. 13, 13a (shell); pi. 13, fig. 11, A. H. 

 (radula); pi. 14, ng. 9 A-F, and 10 E (anatomy). Otostomus (Mor- 

 mus) totonacus MART., Conch. Mittheil. ii, p. 193; Biologia, p. 221. 



