803 



que undulatis, longitudinalibus ornatis ; anfractu ultimo elongato, 

 cingulis duabus transversis ornato ; labio calloso; labro margine 

 flexuoso. 



This species, the most typical of the genus, is remarkably com- 

 pressed, with the varices continuous on each side; besides the 

 usual coloured zones peculiar to this group, there are likewise 

 irregular, longitudinal streaks of the same colour. 



2. Leiostraca subulata (pi. clxx. f. 15, 16), Donovan 

 (Turbo), Brit. Shells, vol. v. pi. 172. Helix subulata, Montagu. 

 Helix flavocincta, Meg. Melania Cambessedesii, Pat/r. Eulima 

 subidata, Risso. Melania Donovani, Forbes. Eulima lineata, 

 Sow. Conch. 111. f. 13 ? Strombiformis glaber, Costa ? Turbo 

 trifasciatus, Adams. 



L. testa fusiformi, tenui, alba, lineis fuscis, duabus, spiralibus ; 

 apertura oblonga. 



Fusiform, thin, white, with two spiral red-brown bands ; aper- 

 ture oblong. 



British Islands, etc. (Mus. Cuming.) 



3. Leiostraca acuta (pi. clxx. f. 25), Sowerhy, Pro. Zool. 

 Soc. 1834. 



L. testa turrito-acuta, alba; anfractibus duodecim, lsevibus, 

 suturis obsoletis, varicibus sparsis. 



Acutely turreted, white ; whorls twelve, smooth, sutures obso- 

 lete, varices few. 



Bay of Montiji, Central America. (Mus. Cuming.) 



4. Leiostraca bilineata (pi. clxx. f. 20, 21, 22), Alder 

 (Eulima), Moll. Northumb. and Durh. p. 47. Helix subulata 

 (var.), Mont. Phasianella subulata, Flem. Pyramis subulata, 

 Brown. 



L. testa subulata, tenui, pellucida, albida, lineis duabus, rufo- 

 fuscis, spiralibus ornata ; anfractu ultimo subventricoso ; apertura 

 oblonga, columella vix arcuata. 



This species differs from L. subulata in being smaller, in having 

 only two bands, close together, in the centre of the body-whorl, in 

 the whorls being less obbque, and in the aperture not being quite 

 so much contracted. 



British Islands. 



5. Leiostraca Mindorensis (pi. clxx. f. 14), Adams et 

 Reeve (Eulima), Zool. Voy. Sam. Moll. p. 52. pi. 11. f. 25. 



5 M 



