LAURIA. 



61 



These species have been known chiefly from excellent draw- 

 ings by Burnup, published by Melvill and Ponsonby. The 

 author is indebted to Messrs. Burnup and Farquhar, and to 

 Major Connolly for series of specimens. 



Whether L. tabularis is really distinguishable from cylin- 

 dracea, and L. dadion from anconostoma are questions re- 

 maining open. Both may be imported forms — a view I am 

 much disposed to accept. Yet, as there are several unques- 

 tionably endemic South-African species, the possibility of 

 convergent evolution of European and Cape forms (all from 

 very similar ancestors) must be considered. Possibly a thor- 

 ough study of the young may assist the decision. 



8. Lauria bruguierei (Jickeli). PI. 8, figs. 17, 20. 



Shell perforate, cylindric-oblong, rather solid, glossy, diaph- 

 anous, brown, under the lens very delicately, irregularly 

 striatulate. Spire high-conic, the apex obtuse. Whorls 6V3, 

 a little convex, slowly increasing, separated by an impressed 

 suture, the last somewhat compressed at base, slightly ascend- 

 ing to the aperture. Aperture oblique, ovate-rounded, one- 

 toothed, the tooth situated in the outer angle on the parietal 

 wall. Peristome white-lipped, exanded, a little reflected, 

 the margins approaching. Columella with an obsolete fold. 

 Length 3*4> diam. 1%, aperture l^xl mm. (Jickeli). 



Southern Abyssinia (Heuglin and Steudner) ; Enjelal and 

 Bagla, Habab Mts., at about 7995 ft., under stones (Jickeli). 



Pupa bruguierei Jickeli, Nova Acta Acad. Caes. Leop.- 

 Carol. Germ. Nat. Cur., vol. 37, 1875, p. 112, pi. 5, f. 5, 6.— 

 Pupa heuglini Krauss in coll. — Pupa umbilicata Martens, 

 Malak. Bl., 1866, p. 96; 1870, p. 84.— ? Pupa undet. near um- 

 bilicata, Blanford, Geol. and Zool. Abyssinia, p. 477. 



It is very close to L. cylindracea, particularly the Cape 

 Verde form dohrni; also to the South African L. dadion. 

 The base is rounded, as in the latter, being less compressed 

 than L. cylindracea. Jickeli found that the embryonic young 

 have angular and columellar lamellae and a transverse basal 

 fold (fig. 17), while in cylindracea of the same stage (fig. 18) 

 he found no armature in the basal wall. 



