E I\l A K G I N U L A. 



Spocies 45. (Fig. a, h, Mus. Brit.) 



Emarginul.v CANDIDA. Ema. testd alba, arcuatd, ovatd, 

 costis validis, nodosis, siibcrqiialibus circci vi<jiiitl, 

 radiatd, interstitiis concentrice liratis el foveolatis ; 

 apice vakU retroi-so ; dorso arcuato ; fismrd brevi, 

 sid)qnadratd, incisd. 



The white E.margixula. Shell white, arched, ovate, 

 rayed -with about twenty strong, nodose, nearly 

 equal ribs, with concentrically ridged and pitted 

 interstices; apex much recurved; back arched; 

 fissure short, rather square, incised. 



A. Ada.ms. Sowerby's Thesaurus Conchylioruni. Fis- 

 surellida;, Eniarginida, sp. 16, figs. 45, 40. 



Hab. Port Adelaide, Australia. 



This species is of excpiisite sculpture. 



Species 4G. (Mus. Brit.) 



Emarginula pumila. £ma. lestd. jmrvA, pallide 

 fused, de])ressd, costis incequalihis, rotundis, con- 

 trice 1-ugatis radiatd ; costAJissurali elevatd ; fifsurd 

 incisd; breviiisculd ; apice ohtuso, subcentrali. 



The dwarfish Em.^rginula. Shell small, pale brown, 

 depressed, rayed with unequal rounded concentri- 

 cally wrinkled ribs ; fissural rib raised ; fissiu-e 

 incised, rather short; apex obtuse, nearly central. 



Arthur Adams. Proc. Zool. Soc, 1851. 



Hab. Honduras. 



A little patella-like species with coarse sculpture. 



Species 47. (Mus. Brit.) 



Emarginula striatula. Ema. testd pared, aWA, ob- 

 longd, depressA, costis incei^ualibus, subrotundis, 

 tribus posticis et quatuor anticis majoribus, laterali- 

 bus minoribiis, paucis intermedis radiatd, interstitiis 

 tenuiter concentrice striatis ; apice post-uiediani 

 obtuso, fissurd incisd, oblongd. 



The little stri.\ted E.margin-ula. Shell small, white. 



oblong, depressed, rayed with unequal, rather 

 rounded ribs, the three posterior and four anterior 

 larger, and the lateral smaller, a few intermediate, 

 with finely, concentrically striated interstices ; 

 apex post-median, fissure incised, oblong. 



tJi'OT. A'oyage de rAstrolabe. 



Hah. Australia. 



Species 48. (Mus. Brit.) 



E.MAiiraxL'LA LjEvicost.^ta. Ema. testd parvd, albd, 

 fjriseti railiis latis pictd, depressA, postice rotunda, 

 anlice ani/iistiori, ungulatd, subplanulatd, costis 

 sublcevigalis i-ai/ialii, inlir^liis eoncinne foveolatis 

 et costellis iiitcrslitiiilibiis niris ; apice paulb post- 

 mediani ; Jissnrd incisd, oblongd. 



The S.M00TH-R1BI1ED Emarginula. Shell small, white, 

 painted with grey in broad rays ; depressed, rounded 

 posteriorly, narrower anteriorly, angular, rather 

 flat, rayed with rather smooth ribs, with interstices 

 neatly pitted and a few interstitial riblets ; apex a 

 little post-median ; fissure incised, oblong. 



A. Adams. Proc. Zool. Soc, 1851 ; Sowerby's Tbes. 

 Conch. Fissurellidw, Plate V., fig. 57. 



Hab. ? 



A pretty little species, with the ribs rather smooth. 



Species 49. (Mus. Brit.) 



Emarginula aculeata. Einu. testd pared, elongatd, 

 fulvA, fiisco radiatd, posiicH rotundd, antice angus- 

 tiori, costis prominentibus, subnodosis postice 

 vaUdioribus radiatd ; interstitiis concentrice lii-atis : 

 apice recurvo, aculeato, post-mediano. 



The aculeated Emarginula. Shell small, elongated, 

 fulvous, rayed with brown, rounded posteriorly, 

 narrower anteriorly, rayed with prominent, rather 

 nodose ribs, the posterior stronger, interstices con- 



December, 1873. 



