AMPULLARIA. 



Plate XI. 



Species 49. (Mus. Cuming.) 



Ampci-laria DifsoNi. Amp. testa globosd, profundi tem- 

 hilicatd, spird actminatd, anfractibus superm declim- 

 6m, deinde ttmido-rotmtdatk, compicue malleatis ; 

 livido-grised, ferrugineo tinctd ; aperturd pyriformi- 

 oblongd, fauce livido-purpured. 



Dyson's Ampullaeia. Shell globose, deeply umbili- 

 cated, spire acuminated, whorls slanting at the upper 

 part, then tumidly rounded, conspicuously malleated ; 

 livid grev, tinged with rust ; aperture pyriformly ob- 

 long, livid purple within. 



Hanley, Conch. Miscellany, No. 1. PI. 2. Fig. 7. 



Hab. Honduras ; Dyson. 



This species scarcely differs from A. nmlleuta, except in 

 being more umbilicated and more globosely acuminated 

 towards the spire. 



Species 50. (Fig. 50 and 51, Mus. Cuming.) 

 Ampull.\bia Beidgesii. Amp. tedd oblongd, tenui, siib- 

 prqfundi umbilicatd, spird turritd, anfractibus auperne 

 late plmo-angulatis, deinde convexis, kevibus, suhnial- 

 leatis ; virente-oUvaced, inierdum sordide olivaceo- 

 brunned, fasciis angustis nunverosis cingulatd ; aper- 

 turd ovato-oblongd, luhro effuso. 

 Bridges's Ampullaria. Shell oblong, thin, rather 



deeply umbilicated, spire lurreted, whorls broadly 

 flatly angled at the upper part, then convex, smooth, 

 faintly malleated; greenish-olive, sometimes dusky 

 olive-brown, encircled with numerous narrow bauds ; 

 aperture ovately oblong, lip effused. 

 Hai. Eio Grande, Bolivia ; Bridges. 



This fine species, collected in the interior of Bolivia by 

 Mr. Bridges, is remarkably distinguished by the broad 

 spiral shelf which is formed by the angular structure of 

 ilie upper part of the whorls next the suture. 



Species 52. (Mus. Cuming.) 

 AMPULLARIA immersa. Amp. testa ovatd, tenui, veutri- 

 cosd, spird brevi, peculiariter immersd, anfractibus ad 

 suturam profunde canaliculatis, deinde convexis, iam- 

 bus ; viresceHte-olivaced, versus spira-in pallidd, fusciis 

 angudis cingulatd; aperturd ovatd, labro subeffuso. 

 The immersed Ampullaria. Shell ovate, thin, ven- 

 tricose, spire short, peculiarly immersed, whorls 

 deeply channelled at the suture, then convex, smooth ; 

 greenish-olive, pale towards the spire, encircled with 

 narrow bands ; aperture ovate, lip rather effused. 

 Hab. Rio Grande, Bolivia ; Bridges. 



A light ventricose species, deeply channelled at the su- 

 ture, with the spire peculiarly rudely immersed. 



August, 1856. 



