14 



similar to H. Brmonii, but the whorls are less convex, and the last one 

 much depressed, and the shell more solid, with a greater divergence. 



Mean divergence 110°; length .39 inch ; greatest breadth .64 inch; 

 least breadth .5 inch. 



41. Heucina citrino-labris. Shell brown or lemon yellow, very 

 solid, outer lip very thick and always lemon yellow ; in other charac- 

 ters like //. albolahris, of which it may possibly be a variety with a 

 greater divergence. The epidermis is very finely but not densely 

 hirsute. 



Mean divergence 123° ; length .39 inch ; greatest breadth .67 inch , 

 least breadth .53 inch. 



42. Helicina megastoma. Shell globose conic, smooth and 

 shining, rather thick, yellowish brown ; spire with very convex out- 

 lines ; whorls four and one-half, a little flattened ; last whorl very large 

 and high, with corresponding size of the aperture, which is quite 

 exactly semicircular ; labrum moderately reflected and thickened ; 

 columella and adjacent part of the last whorl bent into the plane of 

 the aperture ; the columella is produced into a very minute tubercle. 



Mean divergence 108"; length .2 inch; greatest breadth .33 inch; 

 least breadth .25 inch. 



43. Helicina Josephine. Shell conic above, much flattened 

 beneath, with the periphery very acute and scolloped or imbricate ; 

 above irregularly mottled with yellow, green, and white ; beneath cop- 

 per red, with the centre pale green ; spirally ribbed above, with very 

 fine close spiral striae beneath ; spire with the outlines concave near 

 the apex, rectilinear in the rest; apex acute ; whorls six, flat or slightly 

 concave ; aperture a spherical triangle ; labrum moderately thickened 

 and reflected, much advanced above ;' deposit of the base thin. 



Mean divergence 100°; at the apex 80° ; length .27 inch; greatest 

 breadth .43 inch ; least breadth .36 inch. 

 This species belongs to Trochatella. 



44. Helicina tenuis. Shell small, thin, conic, pale brown, with 

 distant slender raised spiral lines, decussated on the spire by inequi- 

 distant lines of growth ; whorls four and one-half, more inflated and 

 subangular below the middle; aperture elliptical; labrum sharp, not 

 reflected ; labrum with a very thin deposit, columella slightly pointed. 



Mean divergence 90° ; length .08 inch ; greatest breadth .09 inch; 

 least breadth .08 inch. 



This also is a Trochatella. 



