DRYM.EUS, MEXICO AND CENTRAL AMERICA. 41 



of the typically spotless zieyleri. It is of course not found in Cali- 

 fornia in the present limits of that State, and probably not on the 

 peninsula. 



D. LATTREI (Pfeiffer). PI. 8, figs. 15-26, 28. 



Shell perforate, ovate-conic, thin but rather solid ; white or whit- 

 ish, either unicolored, or 4 or 5 banded, or longitudinally streaked 

 with brown or purple-brown. Surface shining, irregularly striated, 

 finely malleated, and usually showing fine spiral lines in places. 

 Spire conic, the apex obtuse. Whorls 5f-6^, but slightly convex, 

 the last large, oval. 



Aperture large, but slightly oblique, colored within like the out- 

 side ; outer lip reflexed, white; columellar lip reflexed and appressed ; 

 columella and part of the parietal wall purple. 



Alt. 40, diam. 19, length of aperture 22 mill. 



Alt. 45, diam. 19, length of aperture 25 mill. 



Alt. 43, diam. 23, length of aperture 27 mill. 



Northern and Central Guatemala. 



Bulimus lattrei PFR. in Philippi's Abbild neuer Conch, ii, p. 

 112, pi. 4, fig. 11 (1846); Monogr. Helic. Viv. ii, p. 56 DESHAYES, 

 in Ferussac's Hist. Nat. Moll. Terr, ii, 2, p. 48, pi. Ill, figs. 12, 13, 

 pi. 149, figs. 12, 13. Bulimus (Gonyostomits) luttrci ALBERS, Die 

 Helic. ed. 1, p. 150. BuHmtis (Eurytus) lattrei, \. MART, in Albers' 

 Die Helic. ed. 2, p. 195. Bulimus (Drymtzus} lattrei PFR. in 



Malak. Blatt. ii, p. 151 (1855) Otostomus (Goniostomus] lattrei, 



H. & H. ADAMS, Gen. Ilec. Moll, ii, p. 151 Bulimulus (Drymceus) 

 delattrei FISCH. & CROSSE, Miss. Scient. Mex. Mollusca, i, p. 481, 

 pi. 20, fig. 3 (living anim.), 4; pi. 22, fig. 1-14 (jaw, radula, 

 anatomy. Otostomus (Drymaus) delattrei, v. MART. Conch. Mitt- 

 heil. ii, p. 191 ; Biol. Centr. Amer., Moll., p. 204, pi. 12, f. 11-14. 

 Bnlimits focillatus REEVE, Conch. Icon, v, Bulimus, pi. 36, fig. 211 



(1848) BuliniHS paziantis, TRISTR., P. Z. S., 1861, p. 230 (not 



Pfr. nor Orbigny). 



A large species, varying much in contour, comparative size of 

 aperture and coloration. In some obscurely streaked examples, such 

 as that shown in fig. 25, the interior of the aperture is purple; and 

 this color almost always tints the columella. Very commonly two or 

 more of the color-varieties defined by von Martens occur together. 



Von Martens recognizes the following forms : 

 4 



