150 
Mr. E. A. Smith on Land- and 
32. Mutela Bourguignati , Ancey. 
Hab. Victoria Nyanza. 
II. Descriptions of New Species. 
Hyalinia Lasti . (PL V. figs. 1, 1 a.) 
Testa minute perforata, orbiculata, subdepressa, nitens, fusco-cornea, 
tenuis ; spira leviter elevata et convexa, ad apicem obtusa ; 
anfract. 6, lente accrescentes, convexiusculi, leviter striatuli, striis 
prope suturam anguste marginatam subpliciformibus, ultimus ad 
peripheriam rotundatus, in exemplis juvenilibus obtuse angula- 
tus, infra eonvexus, sed in medio, umbilicum versus, concave 
impressus, radiatim striatus, striisque concentricis tenuissimis 
fere obsoletis sculptus ; apertura oblique semilunata, intus pallide 
vinosa ; perist. tenue, margine columellari leviter incrassato et 
breviter reflexo. 
Diam. maj. 15| millim., min. 13 ; alt. 9. 
Hab . On the plains within a 50- miles radius of Mamboia 
{Last ) . 
Var. pellucida. Testa subpellucida vel flavescenti-cornea. 
Hab . Mamboia, at an elevation of from 4000 to 5000 feet 
{Last ) . 
As is frequently the case in this difficult group of land- 
shells, there is no special feature which at once distinguishes 
this species. The perforation is very small and the super- 
ficial gloss on both the upper and lower surfaces is very 
brilliant. Three of four examples from the high altitude are 
quite pale in comparison with the typical form from the 
plains. 
Hyalinia Eminiana . (PI. V. fig. 2.) 
Testa angustissime perforata, subgloboso-depressa, tenuis, nitida, 
semipellucida, flavo-cornea ^anfract. 5|, subceleriter accrescentes, 
convexiusculi, infra suturam anguste marginati, incrementi lineis 
striatuli, ultimus ad peripheriam rotundatus, infra convexiusculus, 
in medio concave impressus et perforatus ; apertura mediocriter 
magna, obliqua, semilunata ; perist. tenuissimum, margine colu- 
mellari breviter reflexo, umbilicum semiobtegente. 
Diam. maj. 11 millim., min. 10 ; alt. 8. 
Hab . Mamboia, 4000 to 5000 feet altitude {Last). 
A rather convex species, with a somewhat elevated conical 
spire with slightly convex outlines. The basal perforation is 
very small. 
