45 



NE"W SHELLS FEOM MAURITIUS, Etc. 



By G. B. SowERBY, F.L.S., etc. 



Mead December 8th, 1893. 



Since presenting my last paper on new Mauritian shells, I have 

 examined all those that remained unnamed in the Natural History 

 Museum, and identified all, excepting some few apparently immature 

 and unsatisfactory shells,^ as well as the eight following species which 

 appear to be new. 



1. Mangilia Finter^, n.sp, PI. lY. Fig. 17. 



Testa angusta, elongata, utrinque acuminata, antice multo brevior, 

 albida fusco unizonata ; spira acuta turrita ; anfractus 8, vix convexi, 

 superne obtuse angulati, costis rotundatis crassiusculis (circa 10) 

 muniti, spiraliter subtilissime striati ; anfractus ultimus, spirani 

 brevior, zona media fusca angusta ; apertura elongata, angustiuscula ; 

 columella fere recta ; labrum leviter arcuatum, levissime sinuatum. 

 Long. 10, maj. diam. 3 mm. JIab. — Mauritius. 



A narrow costate species, conspicuously marked with a single 

 narrow brown zone about the middle of the body whorl and at the 

 spiral suture. The spiral striae are only visible through a powerful 

 lens. (Named after a friend.) 



2. Mangilia Victor, n.sp. PI. IV. Fig. 19. 



Testa vix rimata, subfusiformis, solidiuscula, antice mediocriter 

 attenuata, postice acuminata, alba, fusco strigata et unizonata ; spira 

 conica, ad apicem acuta, cleinde convexiuscula, sutura impressa ; an- 

 fractus 6-7, convcxiusculi, longitudinaliter costati ; costis crassiusculis, 

 rotundatis, la^vibus, interstitiis angustis fuscis sejunctis ; anfractus 

 ultimus spiram superans, obtuse angulatus, baltea fusca pictus, ad 

 basin fusco tincta ; apertura oblonga, labrum tenue, leviter arcuatum ; 

 sinus latiusculus baud profundus, fauce fusca. Long. 7 '5, maj. diam. 

 3 mm. ITab. — Mauritius. 



A small thickish shell, with conspicuous stout smooth white ribs, 

 and a brown belt in the middle of the body whorl. The specimen is 

 in the Natural History Museum. (Named after M. Victor de 

 Eobillard.) 



3. Mangilia Lotjisensis, n.sp. PL IV. Fig. 18. 



Testa elongata, solidiuscula, medio angulata, utrinque acuminata, 

 albida, pallide fulvo tincta ; spira acute conica ; anfractus 8, primi 2 

 (embryonales) Iseves, sequentes angulati, spiraliter valde lirati ; costis 

 longitudinalibus circa 8, elevatis acutiusculis, rugosis ; anfractus 

 ultimus spiram superans, superne subacute angulatus, dende piano 

 attenuatus ; apertura angusta, leviter sinuata ; columella laevis, postice 



' Excepting also the genus Eiigina, whicli I left for Mr. Melvill. 



