182 



Modiola pectinula. T. obovata, ventricosa, convexa, costis 

 rotundatis radiantibus circiter 40 ornata ; epidermide cerina induta ; 

 umbonibus tumidis, sub-terminalibus : cavositas livida ; niargine in- 

 teriori crenulata. Long. 0.9 ; alt. 0.6 ; lat. 0.4 poll. From fishes, 

 St. George's Banks. 



[Peculiar in its ventricose form, and its surface entirely covered 

 with conspicuous rounded ribs. Belongs to genus Modiolaria.~] 



Modiola nexa. [Undoubtedly the M. (Modiolaria) nigra Gray.] 

 Limax togata [is Tebennophorus Caroliniensis Binney]. 

 Limax tunicata [is Limax agrestis Midler]. 



Helix [Helicella] electriXa. H. testa parva, depressa, umbili- 

 cata, tenui, pellucida electrina ; anfractibus quatuor, striatis ; aper- 

 tura rotundata ; labro simplici. Diameter more than one eighth of an 

 inch. Found in damp open places. 



It resembles H. indentata above, and H. arborea beneath. 



Plaxorbis dilatatus. T. minuta, supra planulata, infra anguste 

 umbilicata ; anfractibus tribus, ultimo carinato ; sutura impressa : 

 apertura ampla, subovata et dilatata. Diam. ^ ; axis, ^ poll. From 

 a pool in Hingham. 



Velutixa [Morvillia J. E. Gray] zonata. T. ovato-semi-orbicu- 

 laris, depressa, lucida, crusta calcarea fusco zonata induta ; columella 

 planulata, sulcata : apertura ampla ovata. Diam. 0.5 ; axis, 0.3 poll. 

 Obtained on Chelsea Beach and from fishes' stomachs. 



Cingula aculeus. T. minuta, sub-cylindrica cornea ; anfracti- 

 bus 6 convexis, striis tenuissimis volventibus cinctis; sutura profunda : 

 apertura ovata ; basi subperforato. Axis, -^ ; diam. J^ poll. ; diverg. 

 23°. On timbers and stones at low-water mark. 



Margarita argentata. T. minuta, depresso-conica, sub-mar- 

 garitacea ; anfractibus 4 convexis striis confertis volventibus omnino 

 insculptis ; sutura profunda ; fauce nacrea, iridescente ; basi per- 

 forata. Axis, Jg ; diam. 1 poll. From fishes caught off Cape Ann 

 and Cohasset. 



BOSTON JOURNAL OF NATURAL HISTORY. 



D^= Vol. iii. 395, (July, 1840.) 



Pupa procera [is P. rupicola Say]. 



Pupa [Vertigo] milium. T. minutissima, ovalis, castanea; an- 

 fractibus quatuor convexis, oblique striatis : apertura cordata, dentibus 

 sex compressis armata, quorum duobus labio affixis ; umbilico pro- 

 fundo. Axis, ^ ; diam. ? L poll. Found on fallen leaves, in woods. 



