OF CONCHOLOGY. 283 



the radula, to the above, in the prominence of the granules and 

 the depth and size of the longitudinal strife. 



EucHELUs ANGULATUS, Pease. Plate 23, fig. 27. 



Description. — T. turbinato-globosa, solida, alba, imperforata ; 

 anfr. ultimo in medio biangulato, angulis costis acuto-granulosis 

 marginatis, supra uniangulato, infra biangulato, interstitiis pro- 

 funde foveolatis, ad suturam, concaviter depresso ; iabro denticu- 

 lato. 



Dimensions. — Dlam. 5, alt 4 mill. 



Locality. — Insl. Annaa. 



Shell globose, somewhat turbinated, solid, white, last whorl 

 biangulato on the middle, angulation bordered by stout, prickly 

 granulose ribs, encircled by one rib above the angulation and 

 two below, instertices deeply pitted, concavely depressed beneath 

 the sutures ; imperforate, (the young narrowly perforate) ; den- 

 ticulations on outer lip small. 



Operculum horny, many-whorled, nucleus central. 



Closely allied to E. foveolatus, A. Ad., specimens of which I 

 have from Tahiti. The above may be recognized by the strong 

 angulations at the middle of last whorl, and less number of ribs. 

 The operculum differs from the figure given in "Adams' 

 Genera." 



Gena l^vis, Pease. Plate 23, figs. 7, 28, 29. 



Description. — T. oblonga, supra plano-depressa, infra rotun- 

 data, loevi, solida, transversim striis incrementis signata ; Iabro 

 recto, labrum incrassatum ; apertura oblongo-ovalis ; spira pos- 

 tica, vix prominula; viridescens olivacea, albida, fusca et rubra 

 varie maculata aut marmorata, interdum omniuo viridula. 



Dimensions. — Long. 11, diam. 6| mill. 



Locality. — Tahiti. 



Shell oblong, flatly depressed on its upper side, rounded on 

 its lower edge, smooth, solid, marked transversely with stride of 

 growth ; outer lip straight, inner lip thickened on its edge ; 

 aperture oblong oval ; spire posterior, small, slightly elevated ; 

 greenish olive, variously spotted or mottled with white, brown or 

 red, sometimes wholly of a dark green color. 



The figures and descriptions of the animals of two species of 

 this genus have been published — Gf. planulata, Lam., and nigra, 

 Quoy. 



The animal of the above species was drawn from life by Mr. 



