NERITA. 



Plate YIII. 



Species 35. (Fig. a, b, Mus. Cuming.) 



Nerita Senegalensis. Ner. iesfd semiglobosd, solidiiis- 

 culd, spird stihexsertd, anfractibtm spiraliter Uneari- 

 sulcaiis, suhcompresso-expanm, lahro inb(s leviter Vi- 

 rato, columelldplano-excavatd, ijrmmlatd et Indent atd ; 

 olivaced, interdmn faiciatd et varieijald, area columel- 

 lari medio aurantio tinetd. 



The Senegal Nekite. Shell semiglobose, rather solid, 

 spire a little exserted, whorls spirally linearly grooved, 

 rather compressly expanded, lip faintly ridged with- 

 in, colnmella flatly exeavated, granulated and two- 

 toothed ; olive, sometimes banded and variegated, 

 columellar area orange-stained in the middle. 



(iMELix, Syst. Nat. p. 3686. 



Hab. Senegal. 



This shell, distinguished among other characters by a 



granulated orange stain on the columellar area, is not N. 



alrata, as indicated by !M. Deshayes, but N. Seneguleum 



of Gmelin, and Le Bunar of Adauson. 



Species 36. (Fig. a, b, Mus. Cuming.) 



NEraTA Listeki. Ner. tedd semiglobosd, spird siihex- 

 serld, anfractibus spiraliter liratis et costatis, aper- 

 tvrd mtblate expansd, labro iutii-s incrassato, teiiue cre- 

 nulato, columelld plano-excavatd, bidentatd ; intense 

 crtruleo-nigrd, costis punctis parvis albis Iiic illic no- 

 tatis. 



Lister's Nerite. Shell semiglobose, spire rather ex- 

 serted, whorls spirally grooved and ribbed, aperture 

 rather broadly expanded, lip thickened inwardly, 

 finely crenulated, columella flatly excavated, two- 

 toothed ; deep blue-black, ribs here and there marked 

 with small white dots. 



Eecluz, Revue Zool. Soc. Cuvierienne, 1841, p. 277. 



Bab. West Indies. 



A shilling bhie-black ribbed shell, sprinkled in a ver\' 

 characteristic manner on the ribs with a few white dots. 



Species 37. (Fig. a, b, Mus. Cuming.) 

 Nerita Savieana. Ner. testd globosd, crassissimd, spird 

 c'xsertd, anfractibus convexis, latiusculis, spiraliter ele- 

 vaio-striatis et liratis, labro intns valde incrassato, 

 dvntato et crenulato, columelld tumidimculd, granato- 

 corrugatd, et dentatd; cceruleo-Higrd, interdnm fulvo 

 obscure variegatd, intusfluvicante. 

 The Saviean Nerite. Shell globose, very thick, spire 

 exserted, whorls convex, rather broad, spirally cle- 

 vately striated and ridged, lip inwardly much thick- 



ened, toothed and crenulated, columella somewhat 

 swollen, grauulately wrinkled and toothed ; blue- 

 black, sometimes faintly ftdvous-varicgated, interior 

 yellowish. 



Eecluz, MS. Mus. Cuming. 



Hah. New Ireland. 



A swollen and very solid globular shell, grain-wrinkled 

 across the columellar area. 



Species 38. (Fig. a, b, Mus. Cuming.) 



Nerita ateo-pdrpueea. Ner. testd trigouo-semiglobosd, 

 spird minutd, plano-impres-id, anfractibus attgustis, ad 

 spiram compressis, ad aperturam late expansis, spira- 

 liter dense costatis et liratis, labro incrassato et late 

 effiiso, columelld plana, medio granatd, dentatd, su- 

 perne sinuatd ; atro-purpured, purpurascente-albo un- 

 dulatd, aperturdfulvd. 



The dark purple Nekite. Shell angularly semiglo- 

 bose, spire very small, flatly impressed, whorls nar- 

 row, compressed at the spire, broadly expanded at 

 the aperture, spirally densely ribbed and ridged, lip 

 thickened and broadly effused, columella fiat, gra- 

 mded in the middle, toothed, sinuated at the upper 

 part ; dark purple, waved with purple-white, aper- 

 ture fulvous. 



Eecluz, Eev. Zool. Soc. Cuvierienne, ISll, p. 107. 



Hab. Island of Negros, Philippines ; Cuming. 



A very characteristic pinched shell, stained with intense 



purple, broken up over the spire into pale wave streaks. 



Species 39. (Fig. a, h, Mus. Cuming.) 



Nerita bisecta. Ner. testa snbglobosd, snbexpansn, spird 

 non exsertd, anfractibus convexis, spiraliter costatis, 

 costis regularibus, subdistantibus, sulco undique bi- 

 sectis, labro intus effuso, minute crenulato, columelld 

 pland, vix denticulatd ; caruleo-nigrd, area colutnel- 

 lari vitellind, nitente. 



The divided Nerite. Shell subglobose, rather ex- 

 panded, spu-e not exserted, whorls convex, spirally 

 ribbed, ribs regular, rather distant, divided through- 

 out by a groove, lip effused within, minutely crenu- 

 lated, columella fiat, scarcely toothed ; blue-black, 

 columellar area yelk-yellow, shining. 



Hab. West Africa ; Fraser. 



Curiously spirally sculptured with a regular series of 



ribs, each of which is divided by a linear groove. The 



columellar area is of a shining yelk-yellow. 



August, 1855. 



