334 HOHENWARTIANA. 



11. H. PECHAUDI Bourguignat. 



Shell elongate, fragile, glassy, glossy, whitish, polished. 

 Spire produced, regularly tapering, a little obtuse at the 

 summit, apex minute. Whorls 7 to 8, hardly convex until 

 the last one, regularly and rather slowly increasing, parted 

 by a linear suture ; the last whorl large, nearly half the total 

 length. Aperture vertical, irregularly piriforni-elongate, 

 very much contracted above, having a minute lamella within 

 on the convexity of the penult, whorl. Columella short, arcu- 

 ate, larnellose or as though truncate below. Peristome un- 

 expanded, fragile, the outer margin slightly arcuate, margins 

 joined by a callus. Length 6.5, diam. 2, alt. apert, 3 mm. 



(Bgt.). 



Tunis : drift of the Medjerda near Ghardimaou. 

 Holienwartliia pechaudi Bgt., LET. et BGT.. Prodr. Mai. 

 Tunisie 1887, p. 127. 



Remarkable for its parietal lamella. 



12. H. HAGENMULLERI Bourguignat. 



Shell minute, oblong-elongate, fragile, diaphanous, some- 

 what whitish, polished; spire moderate, produced, a little 

 obtuse at the summit; whorls 6, slightly convex, slowly in- 

 creasing to the fourth, then more rapidly, separated by a 

 linear suture. Last whorl large, half the total length, a little 

 convex. Aperture vertical, piriform, narrowed above. Colu- 

 mella short, stout, subtruncate below; peristome unexpanded, 

 fragile ; outer lip strongly arching forward, margins rather 

 strongly joined by a callus. Length 4, diam. 1.5, aperture 

 2 mm. (Bgt.) 



Tunis : drift of the Medjerda near Ghardimaou. 



Hohenwartkia k. Bgt., LET. et BGT., Prodr. Mai. Tunisie, 

 1887, p. 127. 



13. H. BIONDIANA (Benoit). PI. 50, figs. 10. 



Shell oblong-fusiform, polished, glittering, pellucid, buff- 

 whitish ; spire turrite-conic, short, the apex obtuse ; suture 

 impressed, submarginate, obliquely descending. Whorls 5, 

 but slightly convex; the last large, suddenly widening, longer 



