110 NERITA 



29. PiCEA, f. 15, Recluz. — N. tessellatce similis sed omnino 

 nigra, labio interno edentiilo. — A specimen of N. reticulata 

 blacked all over would pass very well for this species, ex- 

 cept in having two rather prominent lateral teeth inside the 

 outer lip. 



30. NERiTiNOiDES, f. 43, Rceve. — N. tessellatce similis sed 

 polita, omnino nigra, vix sulcata, apertura flavida, Isevi. — 

 Like reticulata in form, but polished and black all over, with 

 very slight traces of grooves or ribs, and no teeth or wrinkles 

 in the yellowish mouth. 



31. ATRATA, f. 41, Chemnitz. — Ponderosa, quadratim 

 subglobosa, nigra, Isevis ; spira brevi subplanulata ; apertura 

 alba, nigro marginata, labio interno valide dentato ; labio 

 externo intus incrassato, superne bidentato, infra uniden- 

 tato. — A thick, black, smooth shell, of similar form to the 

 preceding, but the white aperture is strongly toothed, and the 

 outer lip black-edged. 



32. EXUViA, f. 34, Linnceus. — Subovata, solida, grisea, 

 liris nigro articulatis, elevatim planatis, ad latera excavatis 

 spiraliter cincta ; spira parva, planata ; apertura subrotunda, 

 area columellari subexcavata granulata, labio externo laque- 

 ato, intus crenato superne dentibus duobus magnis armato. — 

 The articulated ribs are flat at the top, hollow at the sides, 

 and prominent; the columellar area is hollow and granu- 

 lated, outer lip crenulated, with two prominent lateral teeth 

 above. 



33. ATEO-PUEPTJREA, f. 29, Rccluz. — Subtrigoua, purpureo- 

 nigrescenti undulatim variegata, costis valid is lirata ; spira 

 minuta subplanata ; anfractibus rapide crescentibus superne 

 planulatis ; apertura expansa, labio externo latissimo superne 

 supra spiram longe extenso ; area columellari rude granulata 

 et dentata. — Almost three-cornered, with the outer lip 

 broadly expanded and extended over the spire. The blackish 

 purple wavy mottling shows very prettily in some specimens. 



34. PLEXA, f. 33, Chemnitz. — Ovata crassa alba, maculis 

 nigris magnis ad costas distanter tessellata, costis magnis et 

 interstitiis minoribus rude crenulatis sculpta ; apertura sub- 

 expansa ; labio externo maculato et laqueato, intus crasso, 

 denticvilato dentibus majoribus superne armato, area colu-* 

 mellari granulata, ad marginem mediocriter dentata. — A well- 



