56 DRYM.EUS, MEXICO AND CENTRAL AMERICA. 



Spire conic, the apex ratlier obtuse, suture white-margined. Whorls 

 6, a little convex, the hist as long as the spire. Columella thin, lightly 

 arcuate, somewhat twisted above.. Aperture subvertieal, oblong; 

 peristome simple, acute, the eolumellar margin rellexed and sub- 

 adnate above. 



Alt, 30, diam. 1*2. length of aperture 10, width 7.1 mill. (I'M 



South Mexico: Cfttapew (Ghiesbreght). Central Cost a /{/en: San 



Jose (Piltier and Biolley); La Uruca, near San ,Iose, at an elevation 



of 1,100 metres above the sea (Biolley); San Francisco de Jos Rios, 



'r/,sv> ('(ir iSttn ,/(r, on hedges which surround the plantations of coffee 



(Piltier). 



ttn?innis recticiiiHHs Pi K. in Zeitschr. t'iir Malak. 1847, p. 82 ; 

 Monogr. Helic. Vivent. ii, 172, and iv, p. 468 ; and in Martini ^ 

 Chemnitz, Syst. Conch. Cab. ed. 2, 7>/<//'w//.s\ p. 119, pi. 'H>, figs. 5, 

 0. KKKVK. Conch. Icon, v, /tn/i)nus, pi. 74, fig. 530. /in/imn$ 

 (Oxychfilus) rt'ctn:i(inHs ALBEUS. Die Helic. ed. i, p. 17-1. /in?imus 

 (Afetembrinus) ncluztanus PKU. in Malak, Blatt. ii, p. 159 (18,").")). 

 Ort/Kiticns (Oxychnhui) reclu;ittnns II. *V: A. ADAMS, Gen. l\ec. 

 Moll, ii, p. 15;"). Kn!in)n?n$ (J)rt/Mffn$} rcchr.idiiHs MART, in Al- 



bers' Die Helic., ed. 2, p. 212 Bulhunlns (Scu talus) rcclu:nnins 



Fiscn. tfc CROSSE, Miss. Scient. Mex., Mollusca, i, p. 510. />////- 

 muftis rcchr.iitHHS STKKIU-:I.. P>eitr. Mex. Land- und Siissw. -Conch., 

 v, p. 08, pi. l>, fig. 8 OtQStomus rccfuziauHs MAKTKNS. Biologia, p. 

 213 (with " var. lineolatus"). 



The Costa Rica localities given above are lor what von Martens 

 calls var. lineoJatns, identifying it \\ith the species so named by Con. 

 rad. It is not, however, the true linco/atns. and may be called va>\ 

 martensianus. Smaller, yellowish, the length of the aperture not 

 exceeding the diameter of the .-hell. 



Dr. von Martens further remarks: ''The stripes of this species 

 are verv irregular ; even in the same specimen some are near one 

 another, and others have large inter\als between them: often they 

 are more greyish violet than brown, from being situated in a more 

 internal layer of the shell, and covered by a thin whitish superficial 

 coating. Ordinarily, the 1 stripes break up at the same height at 

 some distance from the umbilicus; in young specimens, as a general 

 rule, they break up at the angularity in the middle of the whorl. 



"The specimens from Costa Rica have generally a thinner and 

 more yellow -colored shell, and the largest which 1 have seen from 



