NATICA. 



elevata ; umbilico angusto, callo umbilicali fere tecto. — The 

 three bands of linear markings call N. maheensis to mind, 

 although the form is very different, and the narrow umbilicus 

 nearly filled with the columellar callus. 



38. MAEOCHiENSis, f. 62, 108, 109, 151, Gmelin. — Globosa 

 solida griseo-alba, medio anfractus ultimi late unifasciato ; 

 Eetate junior! variat pallida, punctis sagittiformibus vel 

 arcuatis seriatim depositis, anfractibus prope suturam obscure 

 crenulatis. — From the large plain-banded shell named uni- 

 fasciatus by Lamarck the changes are gradual towards the 

 lighter grey banded varieties with arrow-headed or curved t^pots. 

 The smaller varieties are slightly crenulated at the suture, 

 and have a slightly more pyramidal form. 



39. CATENATA, f. 106, 107, Philippi.—Qua.m N. maro- 

 chiensis magis superne pyramidata, spira esserta anfractibus 

 declivibus, callo spirali in umbilicum deorso, — More narrow 

 and pointed than the above-named, with the spiral callus 

 laid lower down in the umbilicus. The markings on the 

 grey bands are generally bright and lively. 



40. LOCELLDS, f. 155, Philippi. — Globosa, medio anfrac- 

 tuum late griseo fasciata, fascia maculis angulatis marginata ; 

 umbilico parvo, callo spirali fere obtecto ; apice acuto, 

 anfractibus convexis. — Not having seen this shell since 1855, 

 I cannot be quite sure about the spiral callus. 



41. lANTHOSTOMA, f 52, Deshctyes. — Globosa, fulva, ob- 

 scure griseo fasciata ; spira subproducta, anfractibus superne 

 depressis, tum subangulatis ; mnbilico angusto callo spirali 

 magno, columella ad umbilicum callosa. Apertura intus 

 purpurascenti. — A greyish-brown shell resembling N. Tnoni- 

 lifera, but having the umbilicus and callus ol' the present 

 section. 



42. KAPULUM, f. 61, Reeve. — Globosa, albida; spira sub- 

 pyramidata anfractibus subdeclivibus ; umbilico parvo, callo 

 spirali rotundo, brevi. — The umbilicus in this nearly white 

 species is small, and the spiral callus nearly fills it. 



43. viTTATA, f. 115, 116, LciTnarck. — Quam N. collarla 

 magis depressa maculis medio rariusculis supra infraque 

 fasciatim dispositis, callo umbilicali parvo, mediano. — Ke- 

 sembling N. collaria, but more depressly globose, with the 



