2/8 MR. E. A. SMITH ON THK [A^P'"- 1< 



merely as a subgenus of Mathilda.'''' It nertainly either is or is not 

 the same ; antl presuming them to be identical, C'lngnlina must be 

 retained, having been puljlished five years [)revious to MatJiilda ; 

 but should it be considered that they differ sufficiently in sculpture 

 to be placed in different sections, MntJiilda and 7iot Cingulina should 

 take subgeneric rank. 1 have this advantage over Mr. "Watson in 

 knowing that the character of the apical whorls is tlie same in both, 

 as one of the specimens of Cingulina circinata in the Museum still 

 retains its nucleus. 



The sculpture of this species, the type of the genus, is certainly 

 very unlike that of most of tlie known species of 31atki/d<i, consisting 

 of strong spiral ridges, with only feeble lines of growth in the 

 interstices. C. sjiina of Crosse and Fischer is very closely related, 

 but quite distinct. Owing to the more cancellated surfaces of 

 Mathilda, it may be convenient at present to retain it as a section 

 or subgenus. 



Odostomia glaphyra. (Plate XXIII. fig. 23.) 



Testa ovato-cylindracea, albo-pellucida ; anfntclus 5-6, apiculis 

 convexus, involutus, ceeteri parum concexi, Icevigati, sutura 

 mediocriler projunda, vix obliqua, sejuncti, ullimns penult, 

 lutitudiiie suLcequans ; apertura parva, inverse uuriformis, 

 lorigit. iotitis g subcequans ; columella jjIus minus levittr con- 

 torla, in exemplis adultis callo tenui labro juncta. 

 Longit. 2\ milliin., diam. i. 



Although under an ordinary lens this species appears to be smooth, 

 it is in fact finely spirally striated. It is sufficiently pellucid to 

 allow of the columella being indistinctly visible up the spire, the 

 apex of which is large and obtuse. 



EuLiMA FUSCESCENS. (Plate XXIII. fig. 24.) 



Testa parva, acuminata, recta, pallide fuscescens, polita ; anfractns 

 octo, levissime convexi sutura simplice vix obliqua spjuncli, ultimus 

 ad medium tnagis convexus, mediocriter elongatus ; apertura ovata, 

 superne acumiiiuta ; per'ist. tenue, inferne leviter ejf'usum, viar- 

 gine columellari paulo rejlexo, superne callo tenui labro juncto. 



Longit. 2g milliin., lat.fere 1 / apertura f longa, h lata. 



This httle species is peculiar on account of its colour, a rare feature 

 in this genus, and its short erect form. 



EuLiMA ATLANTicA. (Plate XXIII. fig. 25.) 



Testa nivea, elongata, aut recta aut superne plus minus dextrorsum 

 vel sinistrorsuni curvata ; anfractus 11-12, fere pluni, sutura 

 levi sejuncti; ultimus in medio curvatus, suhbrevis ; apertura 

 parva, ovata, superne acuminata ; columella paulo incrussuta, 

 rejlexa, labro callo tenui juncta ; labrum in medio jjrominens, 

 props suturam haud profunde sinuatum. 



Longit. 7g millim., diam. 2/ apertura 2 longa, 1 lata. 



This species has a less slender spire than JS". intermedia, Cantraine, 

 is of a shorter and stumpier growth, and the reflection of the colu- 



