OUTIIALICUS. 



21T 



chestnut, thin, deeply entering callus. Length 48, breadth 26 ; of aper- 

 ture, length 27, breadth 14 mill. 



Buccinuvi zebra, Muller, II, 188, no. 331, 



Orthalicus zebra, Shuttlevtokth, Notit. Mai. 62, pi. viii, f. 3, 4 (1856). — 



Pfeiffer, Mou. Hel. Viv. IV, 588. 

 Helix {Cochlostyla) undata, Fekpssac, Tab. Sjst. 52, uo. 337; Hist. pi. 



cxv, f. 3, 5 (Jide Beck), f. 6 ? 

 BuUmus zebra, W. G. Binnev. Terr. Moll. IV, 



pi. Ixxviii, f. 12. — Var. Reeve, Cou. Icon. ^ '§• ^'l* 



pi. xxvii, f. 90 b ? 

 Vide also Seba, Tlies. Ill, pi. xxxix, f. 50, 51. 

 Not Bulinius zebra, Binney, Terr. Moll. 



The specimen figured (Fig. 370) was col- 

 lected at Key Biscayne, Florida. It is also 

 quoted from Maranhon. It must be re- 

 membered that this is not the same shell 

 as figui'ed on plate 54 of the Terrestrial 

 Mollusks, which is 0. undatus. 



The species is also found in Mexico. 

 An individual, collected by Mr. J. Xautus 

 in the Sierra Madre, is here figured (Fig. 

 371). It is from this that I extracted the 

 jaw and lingual membrane figured on p. 215. 



Ortha'icus zebra. 



Cat. No. !No. ofSp. 



Locality. 



From whom received. 



Remarks. 



8703 

 9326 



Indian Key, Fla. 

 Tomla Talasco, Mex. 



G. Wurdemann. 

 Xantus. 



Orthalicus undatus, Brcg. — Shell Fig. 372. 



imperforate, subconical, rather thick, smooth, 

 incremental striae fine, whitish, with longi- 

 tudinal, irregular, undulating or somewhat 

 zigzag, dark-brown bands and clouds, inter- 

 sected by straight, revolving lines of the same 

 color ; the body-whirl often with one or more 

 straight, brown lines, at irregular intervals, 

 indicating the former margins of the aper- 

 ture ; spire conic, apex obtuse; whirls six to 

 seven, diminishing in diameter rapidly, body- 

 whirl capacious, occupying two-thirds of the 

 whole length of the shell ; aperture ample, 

 ovate, showing the external colors within ; 

 peristome simple, acute, bordered with dark 

 brown, or black, both internally and ex- 

 ternally ; parietal wall with a thin, shining, Orthalicus undatus. 



