EM ARGIN UL A. 



Pl.v 

 (Species 11. Fig. J,,;.) 

 Emaugixi'l.v vimixe.\, a. Adams. To replace figures 

 a and b, Plate III., which were representations of 

 E. tenuUtriata repeated by mistake. 



Species Gl. (Mus. Brit.) 



Emargkula te.\tilis. Ema. testd ovatd, costis soliJis 

 radiata, striis concentricis cinctd, albidd, subviridi 

 circd medium annulatd ; manjine dentato ; apice 

 versiis marginem poslicum declinato ; costd dorsali 

 acute elevdtd, minute foveolatd; Jifsurd brevi, 

 incisd. 



The textile Emargisula. Shell ovate, rayed with 

 solid ribs, surrounded with concentric Btria', 

 whitish, with a greenish ring about the middle ; 

 margin dentated ; sloped towards the posterior 

 margin ; dorsal rib sharply raised, minutely pitted ; 

 fissure short, incised. 



Gould. Invertebrata of United States. 



Ilab. N. Ameriea. 



Species C2. (Mus. Brit.) 



Emap-gixula scAiiUicuLA. Enia. testd ovatd, antice 

 paulo angustatd ; pallide fulvd, costis distantibus, 

 acute squamatis, radiatd ; liris concentricis inter 

 castas conspiaiis ; apice acuta, ante medium re- 

 ciirvo ; costd doi-sali elevatd, fasiird brevissimd, 

 incisd. 



Th£ sharp-scaled Emauginula. Shell ovate, anteriorly 

 a little narrowed ; pale fulvous, rayed with distant 

 acutely scaled ribs ; concentric ridges conspicuous 

 between the ribs ; apex acute, recurved in front 

 of the middle ; dorsal rib raised, fissure very short, 

 incised. 



A. Adams. MS. in Cum. Coll. 



Hab. ? 



Differing from Emanjimda nigosa in the sharp 



prominence of the rather distant ribs. 



pecies 63. (Mus. 



copied.) 



Emarginula scutella. Ema. testd pallide fulvd, de- 

 pressd, irrcgulariter costatd ; costis incequalibus, 

 rotundis, approj:imatis, concentric!; striatis ; apice 



IX. 



acuta, paulu post-iiudiuiii recurvo ; margine j)ostic<j 



subanguhita. 

 The little shield E.map.ginula. Shell pale fulvous, 



depressed, irregularly ribbed ; ribs unequal, 



rounded, approximate, concentrically striated ; 



apex acute, curved backwards a little behind the 



middle ; posterior margin rather angul.ar. 

 Deshayes. Conch. Isl. de la Keunion, PI. XXXIV., 



f. 1, 2. 

 Hab. Isl. Bourbon, or Reunion. 



An irregularly angular character in the posterior 

 outline distinguishes this species. 



Species G4. (Mus. Crosse.) 



E.\iARGiNULA TiioMASi. Evui. tcstd parvd, dcpressd, 

 postice rolundatd, antice angustatd, costis numerosis 

 regularibus radiantibus, et striis elevatis concen- 

 tricis concinne cancellatd, pallide subviridi, fasciis 

 olivaceis cinctd; apice oltuso, paulo post medium 

 inclinata ; margine arcuaio, intiis denticulaio ; 

 Jissurd laid ; sulco dorsali distincto. 



TnoM.\s's Emarginula. Shell small, depressed, rounded 

 posteriorly, narrowed anteriorly, neatly cancellated 

 with numerous regular radiating ribs and raised 

 concentric stria;, pale greenish, encircled with ohve 

 bands ; apex obtuse, inclined a little behind the 

 middle ; margin arched, denticulated within, 

 fissure broad, with a distinct dorsal groove. 



Crosse. Journal de Coiicliyliologie, 1855, p. 43. 



llab. Aden, Red Sea. 



Species C5. Mus. ? copied.) 



Emap.ginula costulata. Ema. testa ovatd, elevatd, 

 imllide subviridi, costis validis, rectangularibus, sub- 

 distantibus et liris concentricis distinctis,in(Bqualibus, 

 quarum plurvnis annulatis cancellatd ; apice valde 

 retrorso, canali dorsali profundi ; fissurd magnd, 

 incisd. 



The ribbed E.marginula. Shell ovate, elevated, pale 

 greenish, cancellated with strong rectangular, rather 

 distant ribs and concentric distinct, unequal ribs, 

 of which several are annidar ; apex much recurved, 

 with a deep dorsal canal ; fissure large, incised. 



Deshayes. Conch.Isl.de la Reunion, PI. XXXIV., f. 5-3. 



Hub. Isl. Bourbon, or Reunion. 



Some of the concentric ridges are so raised over the 



ribs as to form scarcely interrupted rings. 



August, 1874. 



