118 OXYSTYLA, MEXICO, ETC. 



form ; columella scarcely twisted, nearly vertically descending. Alt. 

 G2, diam. -JS..3, n lt. of aperture 28, width 14 mill. (Rolle.} 



Colima, W'l'tft r/i Mexico. 



(hiliulli-iis eJei/ans KULLE, Nachr. Bl. D. Malak. Ges. 180'), p. 131, 

 no. In. 



'' Closely allied to O. princeps, luit evidently separable specific- 

 ally." It lias not been iigured. 



0. colimensis (Rolle). 



Ditl'ers from O. pnnceps in the more solid shell and much more 

 twisted columella. Alt. ."is, diam. 30, alt. of aperture 28, dinni. 15 

 mill. A form standing between < >. jirinccps and O. ferussaci, of 

 which unfortunately only specimens collected dead are before me; it 

 appears to me specifically different. (Rolle.) 



Colima. 



<>rth. (colimensis n. sp.f) KOLLE, t. c. p. 131, no. 18. 



O. LIVKXS (Shuttleworth). PI. 23, fig. 15. ' 



Shell elongale-acuminate-ovate, thin, striatulate, marked with 

 close and very minute undulating spiral lines ; dull bull', ornamented 

 with brown, somewhat waved streaks, subinterrupted or obsolete 

 below the periphery of the last \\horl, which is narrowly and incon- 

 spicuously two-banded. Spire conic, livid above, apex intenx- purple- 

 black. Whorls C>, a little convex, the last about as long as the spire ; 

 colnmella slender, thread-like, rather straightened. Aperture ob- 

 lique, truncate-oval, while inside, and somewhat streaked ; peristome 

 unexpanded, bordered with intense chestnut-brown, the margins con- 

 nected by a che>tnut-hrown callus. Alt. -IS, diam. 'I'l. longe.-i axis 

 of aperture L J ."> mill. (Sluitt.) 



Mexico, probably near Vera Oruz (Sandoz). 



Orthalicus //'/</ Sin i r., Noiitia- Malacologicae i, p. i'>-l, pi. 3, f . 8 

 ( is;,c,) r, ,.., Mouogr. Hel. Viv. iv, p. 589.? Fix in i: ^ CKOSSE, 

 Mi-. Scient. Mex., .Moll, i, |i. I.".."., pi. IS, f. C, C,^, ':<). lit; us I'.IX'K, 

 Index, ]>. .V.I ( nude name). 



The typical < >. /,',-/', /s is still known solely by Shuttleworth's de- 

 scription and figure. He remarks that the apex varies from intense 

 to pale purple-black, and the streaks are sometimes wider and darker 

 colored. It is allied to ( >. jiriiireps, but differs in the more >lender 

 lorm, the hi>l whorl not ventrieoM', base nari'ower, and the color, 

 pattern and thinne>- of the shell. 



