102 NEGULUS. 



liarly striate or costulate ; [very small : 2 to 2.5 mm. long] ; 

 apex obtuse. Whorls 4% to 5%, convex, parted by a deep 

 suture, the last % to % the length. Aperture rather large, 

 oblong, higher than wide, toothless; peristome a little thick- 

 ened, slightly expanded, the margins converging, columellar 

 margin somewhat concave" (Boettger). 



Distribution : Africa ; Tertiary of Europe. 



Figured on plate 5, figs. 14 to 21. The whorls are higher, 

 increasing more rapidly than in Truncatellina, the proportions 

 being much as in the recent Pupoides hordacea (Gabb). 

 Perhaps Negulus is related to Nesopupa as a toothless side 

 line, comparable to Pronesopupa. As none of the Neguli are 

 at hand, I have not been able to compare the groups directly. 



Besides the type, Dr. Boettger included in this genus the 

 recent P. abyssinica Reinh. and several Tertiary species. 



NEGULUS REINHARDTI (Jickeli). PL 5, figs. 16, 17, 18. 



The perforate shell is cylindric-ovate, of a darker or lighter 

 brown color, and under the lens, covered with obliquely longi- 

 tudinal riblets. The slightly tapering spire terminates in an 

 obtuse apex. The 5 convex whorls increase regularly, and are 

 separated by a deep suture. The last whorl, which ascends 

 hardly noticeably in front, forms nearly one-third of the total 

 length of the shell ; it tapers to the base, and appears slightly 

 and bluntly angular under the suture above. The toothless 

 aperture is oblique, receding towards the base, is elongate- 

 rounded, and has straight, thickened margins, scarcely ex- 

 panded; the columellar margin lightly curved, slightly re- 

 flected at the insertion, showing no callous thickening. The 

 right margin of lip is slightly impressed from outward 

 (Jickeli). 



Length 2.6, diam. 1.25, alt. apert. 1% mm. 



Length 2.33, diam. iy 6 , alt. apert. % mm. 



Abyssinia : Province Hamaszen at Mekerka, on moss-covered 

 cliffs on the banks of the Toquor (Jickeli). 



Pupa reirihardti JICKELI, Fauna der Land- und Siisswasser- 

 Mollusken Nord-ost-Afrika's, in Nova Acta K. Leop.-Carol. 

 Deutsch. Akad. Naturf., xxxvii, 1874, p. 122, pi. 5, f. 12. 



