438 



A MANUAL OF AMERICAN LAND SHELLS. 



LXXVIII, Fig. 12, and copied in L. and Fr.-W. Shells K A., I, 216, 

 Fig. 370 (not Fig. 371, which is referred by Fischer and Crosse to 0. 

 melanochilus, Val.). It is jirobably a variety of undatus, not O. zebra, as 

 I at first believed. The jaw has 7-1-7 separate pieces. The liugual 

 nienibraiie has 12G- 1-126 teeth. The teeth are of same type as in 0. 

 undatus, but the cutting edge of the centrals and first laterals is shorter 

 than the base of attachment. (Fig. 484.) 



Orthalicus undatus, Brug. 



Shell imperforate, subcorneal, rather thick, smooth ; incremental 

 Fig. 482. Strife fiue, whitish, with longitudinal, irregular, 



undulating or somewhat zigzag, dark-brown 

 bands and clouds, intersected by straight, revolv- 

 ing lines of the same color ; the body-wJiorl often 

 with one or more straight, brown lines, at. irreg- 

 ular intervals, indicating the former margins of 

 the aperture; spire conic, apex obtuse; whorls 

 6 to 7, diminishing in diameter rapidly ; body- 

 whorl capacious, occupying two-thirds of the 

 whole length of the shell ; aperture ample, ovate, 

 showing the external colors within ; jieristome 

 simple, acute, bordered with dark brown or 

 Orthalicus undatus. black both internally and externally ; parietal wall 

 with a thin, shining, brownish, entering callus; columella slightly 

 thickened, not reflected nor truncate, making a continuous curve with 

 the peristome. Common length of axis about 50"""; diameter of large 

 whorl rather more than 25""°. 



(Bulla) Zebra MitUeri, Chemnitz, ix, pt. 2, 24, pi. cxviii, figs. 1815, 1816. 



Helix {Cochloslifla) undaia, FiSrussac, Tab. Syst., 32, No. 337 ; Hist., jil. cxv, figs. 1, 



4 ; pi. cxiv, figs. .5, 6. 

 Biilimiis (0.) nnrhitus, D'Orbingy, Cuba, i, 174, pi. vi, figs. 9, 10. 

 Bulimus zebra, Binxey, Terr. Moll., ii, 271, y>\. liv. {=Ferussaci, Mart, teste FiS(niKR 



ami Crosse).— W. G. BiNNEY, Terr. Moll., iv, pi. Ixxvil, fig. 13?— Pfeiffer, 



Mon.Hel. Viv., ii, 143. 

 Orthalicus undatus, Shuttleworth, Not., 63, pi. iii, figs. 4, 5. — Pfeiffer, Mod. Hel. 



Viv., iv, 589.— Tryon, Amer. Journ. Conch., iii, 166?— W. G. Binney, L. & 



Fr.-W. Sb., i, 217 (1869); T. M. U. S., v, 408. 

 Bulimus zebra, W. G. Binney, Terr. Moll., iv, pi. Ixxviii, fig. 12.— Var., Reeve, Cou. 



Icou., pi. xxvii, fig. 90 b? 

 Orthalicus zebra, Fischer and Crosse, Moll. Mex.,et Guat., 441, pi. xviii, figs. 8, 



Sa. 

 Bulimus reses, .Say, New Harm. Diss., Dec. 30, 1830; Binney's ed., 39. 

 Jgatiiia J'uscafa, Rafinesquk. Enum. and Ace, 3 (1831); Binney and Tryon's 



complete edition, 68, 



