90 Din M.I IS LKIOSTKACUS. 



Var. .x-//yrfv,N//.s, n. v. PI. -24, tigs. 26, 27. 



Smaller and inure slender ; whorls 6 ; later whorls showing a slight 

 irregular niallcation under the lens. Translucent whitish, with more 

 or less opaque white strigation, and often some scattered dots; sev- 

 eral post-nepionie whorls densely spirally striated. 



Alt. 19, diam. 9, length of aperture 8^ mill. (Nicaragua). 



Alt. loi, diam. 7^, length of aperture <>1 mill. (Honduras). 



Nicaragua (Bridges); Honduras (Hjalmarson). 



D. PAXAMKNSIS (Broderip). PI. 24, fig. 30. 



Shell ovate-fusiform, somewhat glossy, diaphanous, pale fulvous. 

 Whorls G, subventricose ; lip slightly subretlexed. 



Alt. 1, diam. ^ inch (JJrod.). 



l*la del Rey (San Miguel), one of the Pearl Islands, and Taboga 

 Island, both in the Bay of Panama, on the trunks of large trees 

 (Cuming). 



Bttliuiis junKiiin'iisis BuonKKii', P. Z. S., 1833, p. 105 Sow- 



i KIIV, Conch. Illustr., Bnlinus fig. 25. JinUnus jxinamensis Di -- 

 IIAVKS, in Lamarck, Hist. Nat. des Anim. sans Vert., ed. 2, viii, 

 1>. 273. Pi R. Monogr. Helic. Vivent. ii, p. 200. KKKVK, Condi. 

 Icon. v. liulhtniK, pi. 13, fig. 7(>. BiiHimts (^Bulimulus) panamensis 

 BECK, Ind. Moil., p. r>7. Bulimus (Leptomerus) panamensis AI.KKRS, 



Die Helic., ed. I, p. ICG PKH. in Malak. BHitt. ii. p. lf.0 (1*55). 



Urtlnilii-im (Leptomerus) jnninniensix H. t'v A. AHAMS, Gen. 1-Jec. 

 Mull. ii. p. 1 .")('.._- ntmifo/Hiix jxnifin/iHsis M AI; i I.NS, Biol. C'entr. 

 !-.. .Mull., p. 236. 



'~ figure shows darker obliquely longitudinal tawny streaks 

 un a paler ground. It is probably, as Dr. von Martens remarks, a 

 Dry mates rather than a LeptomemS, and may prove to be a bandless 

 form of one of the preceding species inhabiting the Pearl Islands. 



Subgeims LKIOSTI: \ i - Albers, IS.'id. 



I.i-lntl rums Ai.r.i.i;-, Die Ilelieeen, 1S.")(), p. 15G (exclusive of all 



except I>ra/i!ian -pecies) I.i,,stnn-ns \ < <\ MAKII:NS, 2d edition of 



I )ir lid., p. '2 I .') ( -aim- e\dn>ions ). type /'. rltlutus Spix. Not Lios 

 true, i UuriiH-i-ii'i-, Ilaiidbuch der Entomologie iii, p. 58H, lsl^(('ule- 

 oplera); not !.<!,, slnn-n II. >V A. Adams, (Jen. Kec. Moll, i, p. -'.'', 

 Dec., IS.").'"! (Mollusca); not l.ii^l rm-ns Angrlin. Palaeont. ,Suec. ii, 

 is;, 1 (Trilubita). 



Perforate, ovate-|i\ ramidal >hdls, with the spire somewhat turreted, 



