and Western Continents. 163 



Lepidopera ; the first of which is found in every part of the globe. 

 As however the attention of the writer has been directed more 

 particiilarly to the Coleoptera, the species referred to, have been 

 exclusively of that order. 



Description of some new species of Shells, By John H. Red- 

 field. Read January 26tli, 184G- 



Margixella flavida. Plate X. fig. 4, a. b. — Cabinet of the 



Lyceum. 



M. testS, parva, ovata, lcevissima, flavida, scepe f asciis tribus sub» 

 rufis ; labro albo, crasso, reflexo, intus obsolete denticulato : aper- 

 tura lutea : spira breve conica, apice rubro ; columella quadripli- 



Shell small, ovate, highly polished, yellowish white, sometimes 

 crossed by three reddish bands, of which the uppermost is immedi- 

 ately beneath the suture. Lip white, strongly thickened, obtusely 

 reflected, extending a little upon the penultimate whorl, and indis- 

 tinctly denticulate within. Spire short, and tipped with red or 

 brown. Columella with four plaits, all oblique, the lower ones the 

 most so : a slight callosity upon its upper part near its junction 

 with the outer lip. Aperture bright yellow sometimes verging up- 

 on brown, and deepest near the extremities : length, 0.47 inch : 

 breadth, 0.31 inch. 



Hah/tat, Cuba and Bahama Islands. 



Remarks. — This little species though familiar to collectors, 

 does not appear to have been described. It occupies an interme- 

 diate position between Marginella conoidalis, Kiener, and M. d'ta- 

 fhana, Eiener. The three species are each well defined, nud con- 

 stitute an interesting little group. The one just described, differs 

 from the M. conoidalis in its yellowish color, in being loss solid, and 

 in being destitute of the reddish dots usually found upon the outer 

 margin of that species. The M. diaphana, on the other hand, is a 



