374 



2. Makginella HaepjEfoumis (pi. lxxiv. f. 7, 8.), Beck. M.S. 



M. angulata, pallidissime rosea, griseo obscure fasciata, punctis 

 minutisj creberrimis, seriatim ornata ; spira subelongata ; anfracti- 

 bus angulatis, cremilatis ; columella quadriplicate ; labio externo 

 crasso, valide crenulato, antice emarginato. 



It is difficult to describe with precision the difference between 

 this species and M. bifasciata ; it is however thicker and more 

 angular, and the aperture is shorter. From Senegal. 



3. Marginella bifasciata (pi. lxxiv. f. 13, 14, 15.) Lam. 

 Auim. s. vert, vii., p. 557. 



M. ovali, pallide fulva, griseo nebulata vel undulata, fasciis dua- 

 bus nigrescentibus cincta, seriatim creberrime punctata; spira 

 brevi, crenulata, vix angulata., obtusa ; columella oblique quadri- 

 plicate ; labio externo subelongato, arcuato, valide crenulato, 

 antice emarginato. 



More rounded, with the spire shorter in proportion, and the 

 outer lip more bowed outwards than the M. Faba ; the spots are 

 also much more numerous and minute : fig. 14, with the strong dark 

 bauds, is Lamarck's shell ; fig. 15 is a very beautiful variety with 

 the bands fainter, and with lightning-like markings between, from 

 Mr. Cuming's Collection; in fig. 13 the bands are scarcely per- 

 ceptible. From. Senegal. 



4. Marginella obtusa (pi. lxxiv. f. 11, 12.) nobis. 



M.ovali, crassa, pallide fulva, griseo nebulata, creberrime seriatim 

 punctata, fasciis duabus, interruptis, nigrescentibus, cincta; spira, 

 breviuscula, obtusa ; anfractibus leviter angulatis ; plicis obtusis, 

 elongatis ; apertura angusta; columella quadriplicate, antice acuta ; 

 labio externo lsevi, crasso, postice elongato et angulato, antice 

 emarginato. 



A remarkable shell in the collection of Miss Saul, differing from 

 31. bifasciata and the rest of the group in being much thicker, 

 with a shorter obtuse spire, with a thickened, smooth outer 

 lip, which is angulated and lengthened towards the apex ; there 

 are a few obtuse ribs running nearly all the length of the body 

 whorl. Locality unknown. 



5. Marginella pseudo-faba (pi. lxxiv. f. 21, 22.), nobis, 

 Zool. Proc. 1846. M. Faba, Lam. Anim. s. vert. vii. 



M. angulata, antice attenuate, sub-recurva, pallide fulva, griseo 

 nebulata, punctorum irregulorum seriebus 10 sparsim cincta, 

 spira prominula ; anfractibus angulatis, ad angulum valide crenu- 



