662 



subangulatim inflatA, concentrice minutissime striata ; area liga- 

 menti simplici ; margine dorsali elevato ; lunula nulla ; margine 

 antico brevi. 



Large when full-grown, thin and inHated, rather angular to- 

 'wards the back of the shell. The anterior side is shorty and 

 there is no lunule. 



St. Elena, West Columbia, in sandy mud at low water ; and 

 Lobos Island, Peru, in sandy mud, from six to seven fathoms. 

 Cuming. 



25. Artemis macilenta (pi. cxli. f. 32), Reeve, Conch. Icon. 

 Artemis, pi. ix. f. 51. 



Art. testa suborbiculari, obliqua, alba, tenui, compressa, laevi- 

 gata; lunula elongata, indistincta. 



Very thin, rather round, compressed, white, with the lunule 

 scarcely defined. This may be the young of A. subquadrata. 



Sect. 4. Dorsal margin depressed. 



26. Artemis penicillata (pi. cxli. f. 28), Reeve, Conch. 

 Icon. Artemis, pi. vi. f. 32. 



Art. testa subquadrata, compressa, alba vel fulva, rufescente, 

 lineis radiantibus subimpressis fuscescentibus pallide notata, con- 

 centrice striata ; striis elevatiusculis, ad latera validioribus ; mar- 

 gine dorsali postico rectiusculo ; area ligamenti simplice depressa, 

 lineari; margine antico declivi; lunula sublanceolata, leviter 

 impressa. 



Eatlier square at the back, more round and sloping in fi'ont, 

 compressed, white or brownish, with impressed irregularly diverging 

 and radiating lines of colour. The hgameutal area is represented 

 by a simple linear depression, and the lunule is rather long and 

 narrow. 



Locality unknown. In Mr. Cuming's collection. 



27. Artemis angulosa (pi. cxli. f. 26), PJdlipjn, Abbild. 

 Cytheraa, pi. v. f. 1. A. longilunata. Reeve, Conch. Icon. pi. x. 

 f. 61-. A. penicillata, var.. Reeve, Conch. Icon. pi. vi. f. 36. 



Art. testa A. 'penicillata simili, sed magis compressa et quadra- 

 tim expansa ; lunula peculiariter elongata. 



Flatter and broader than A. penicillata, with the lunule more 

 elongated. 



In Mr. Hanley's collection. 



