32 Din M.I .IS, MEXICO AND CENTRAL AMERICA. 



D. JOSEPiirs (Angas). PI. 2G, figs. 6-13. 



Shell oblong-turreted, broadly rimate, lliin luit solid ; white with 

 thin pale buff cuticle, unicolored or with longitudinal stripes or spiral 

 series of spots of brown. Surface glossy, smooth, the growth-lines 

 inconspicuous, some very tine spiral lines generally to be seen on the 

 base, under a strong lens. Spire long, conic, with convex or nearly 

 straight lateral outlines, the apex obtuse. "\Vhorls 7, convex, the 

 apical with typical Drymaus sculpture, the last very convex and 

 full below, slightly ascending in front. 



Aperture decidedly less than half the length of shell, ovate, the 

 peristome thin ; broadly expanded, oolumellar margin very much 

 dilated, impressed or channelled at the insertion above, the outer edge 

 produced in a wide lobe ; columella with a deeply entering fold. 



Alt. 32, diam. 14^, length of aperture 15 mill. 



Alt. 32^, diam. 15, length of aperture 13| mill. 



Alt. 30, diam. 141, length of aperture 13 mill. 



Puerto Viejo, on the Rio Sarupii/ni. in N.-E. Costa Rica (Biolley); 

 San Jose (IJoucard) and Talinnanca (Gabb) in ccn/nt/ ; and on t/ie 

 batiks of Rio Pacuare del Sur, in its middle course at about 500 meters 

 alt., rttllcy of the tipper Savegal, at 1000 meters alt., and in the woods 

 near Terraba ; Qnebrada de Tocori in the ra/ley of the Rio Paqiiefc, 

 and El Pital in the valley of the Rio Naranjo, in S.- W. Costa Rica 

 (Pittier). 



Bulinuis josephus ANGAS, P. Z. S., 1878, p. 73, pi. 5, f. 13, 14; 

 1879, p. 478 Otostonnis josephus MART., Biol. Centr. Amer., Moll., 

 p. 2(12, with var. IIHICH/HSHS, pi. 12, f. 7, and var. concolur, pi. 12, f. 

 8-10 (Aug., 1893). liiiHinnhts (Leptobyrsits} zeledoni DALL, Proc. 

 U. S. Nat. Mus. xvi. p. 644, pi. 71, f. 2 ( Nov. 23, 1893). 



Closely resembles D. zhorquinensis in the form of the umbilicus, 

 peri-tome and colnniella, a- \\ell as in the color pattern ; but smaller, 

 willi longer s|iire and less dilated last whorl. 



The typical color-form (ligs. 11, 12) is striped longitudinally with 

 brown, the stripe.-, cither straight or .-onie\vliat angiilated. 



Color-var. nitim/osus Martens (lig. '.'), has four series of .-iuarc 

 spnls. It is from the banks of the Rio Pacnare del Sill, in south- 

 \\ I'-tcrn ( 'osta Rica. 



Color-var. fonml,,,- .Mart. (ligs. (', 7. s. Id, l.'O, uniform pale yel- 

 lowish. Occurs in N. -]!., Central and S.-W. Co>ta Rica. Dall's 

 B. zeledoni (fig. 1.'!) is a synonym. 



