Species of Marine Shells. 187 



The shell rather closely resembles Troclnis pleheius, Phil. 

 (= Clanculus nodiliratus, A. Adams), the principal difference 

 being thi 

 lous or dentate. 



Minolia eucoronata, sp. n. 



Testa depresse orbicularis, tenuis, late umbilicata, fulvescens, fusco 

 strigata ; spira obtusa, vix elevata ; anfractus 3^, concavi, bicari- 

 nati ; carinis eximie tuberculosis, sutura indisfciucta ; anfractus 

 iiltimus depressus. granoso triliratus, ad peripheriam carina acuta 

 crenulata vix nodulosa ; basis convexa, extus laevis, area mediaiia 

 quadrisulcata et radiatim plicata ; umbilicus latus et profundus, 

 circularis, ad raarginem tuberculatus, 



Alt. 2|, diam. 4| mm. 



A little depressed shell, with (wo beautifully beaded keels 

 to each whorl, the last whorl exhibiting 3 granular lirae 

 between the keels, the margin of the umbilicus being strongly 

 nodulous. 



I know of no species with which to compare this beautiful 

 little shell. 



Ethalia Nevilli, sp. n. 



Testa depressa, circularis, alba, pellucida, perforata ; spira convexo- 

 depressa ; anfractus 5, primus minutissimus, caeteri leviter con- 

 vexi, spiraliter minute striati ; penultimus puncturatus ; ultimas 

 striis partim fere obsoletis sculptus, ad peripheriam rotundatus ; 

 basis convexa, spiraliter leviter striata, striis in regione umbili- 

 cali magis couspicuis et confertis ; umbilicus parvus, circularis, 

 profundus ; apertura suboblique ovalis, intus Itevis, peristoma 

 simplex ; columella brevis, obbcjue arcuata, leviter incrassata. 



Alt. 2, diam. 4| mm. 



This sjiecies appears to belong to the little group which, 

 according to Pilsbry, is allied to Teinostoma, and erroneously 

 referred to Ethalia. In the absence of further evidence than 

 that furnished by the shell, I think it best, however, to place 

 it in the latter genus. It may belong to Fischer's subgenus 

 Pseudorotella, although the umbilicus is open, and not covered 

 by a callus as in the ty[)e of that group {l\ semistriata, Orb.). 



Teinostoma pellucidunif sp. n. 



Testa minuta, albo-nitens, perdepressa, tenuis, pellucida, imper- 

 forata ; spira convexo-planulata ; anfractus 6, Iteves ; sutu] a 

 anguste caualiculata ; ba^is planato-convexiuscuki, in regione 

 umbilicali callo lato albo depresso munita ; apertura parviuscula, 

 ovato-subcircularis, vix obliqua ; labrum tenue. 



Alt. 1, diam. 2^ mm. 



