Mullv sea from South Africa. 97 



plicis dentibusve 5 prscdito : plica parietali aoitiaoiformi, intranto, 

 plicis duabus lubialibus, cxtiis dentit'ormibus, longo intrantib'is, 

 dente basali siraj)Iicc, acuto, parvo, plica columellari raammaDformi, 

 profunda, apcrturara fere claudcnte. 

 Alt. 4, diain. 1-5 mm. 



ILth. ]\Ielrnotli, Znluland (^Mi.iit Uickn/). 



Four examples, all pnci.st'ly similar, of a small peculiarlv 

 incrassate species, sometliing like E. crassii/ent^ Pfr., ami 

 other members of that alliance in miniature. The peii-'t')- 

 matal processes are very marked, almost between them closing 

 the roundish aperture. 



Ennea .vi/sila*, sp. n. (PI. VI. figs. 6, G «.) 



E. testa recta, C3lindrica, variabili, parum rimata, nunc majors, 

 solida, albo-cinerea, lon^itudinaliter indistincte ct oblique cras<i- 

 costata, nunc (var. hiialina) loevi, pcllucente, nitida ; anfractit)U3 

 7-9, quorum apicales obtusissimi, subplanati, ca^teris rectis ; 

 apertura ovata vel ovato-rotunda ; peristoraate nitido, albo, in- 

 crassato, dentibus plicisve quinqus instructo : plica parietali acuta, 

 longe intrante, dentibus duobus labialibus, quorum superior 

 bifidus, dente basali conspicuo, acuto, plica columellari omnino 

 interna, magna, maraillata. 



Long. 5, lat. 2 mm. (sp. min., var. lujallna). 

 „ 8, „ 3 „ (sp. mnj.). 



Hub. Joiiannesburg, Transvaal (Johnson, McBean) ; Pre- 

 toria (McBean). 



A variable species, the smaller, very smootli, shining-, 

 transparent form (var, hi/alino) offering- considerable contrast 

 to the large, more coarsely longitudinally striate shell which 

 attains the maximum development as given above, and was 

 collected by Mr. Johnson. 



The mouth-processes in both are virtually identical. With 

 the larger form E. vanstaadensis^ M. & P., is comparable, a-i 

 also are E. instabiUs and ampulluce'i, i>l\ir. { = obovata, Pir. ?j, 

 but our species differs in the more cylindrical contour and 

 bolder disposition of peristomatal phiifs. Another marked 

 characteristic in E. jcysila is the Lilurcation of the up[)er 

 labial tooth. 



Our best thanks are due to Mr. Henry C. Burnnp for 

 having devoted much time to the elucidation ot this very 

 interesting but variable specie:^. 



Ennea Zvlota-\, sp. n. (PL VI. ?ij;. 7.) 



E. testa ovato-oblonga, politissima, obtecte rimata, apud apicem 



* ^vaCKoi, smoothish. 

 t fr/Xwror. enviable. 



Ann. i.1 Muj. S. Ili.st. Scr. 7. \'o/. xix. 7 



