' - Dcscriptio7is of New Species of Bullia and MarglncUa. 



2. MARGINELLA Chrysomclina. Plate XVII., Fig. 2. 



Testa ovali, nitida, alba ; maculis subquadratis fill vis scxfasciata ; fasciis inter- 

 niediis niveis : ?pira retusa, obtecta ; apertura angusta, anticc valdc cmarginata • 

 labro inlus erenulato, extus albo, varicoso ; columella 6 aut 7 plicata, plicis supe- 

 rioribus obscuris ; plica penultima tumid a, bifida , exterius producta. 



Description. — Shell oval, polished, whitish, crossed hy six rows 

 of quadrangular or roundish yellowish spots; between each of 

 these rows is a narrow band of pure white. Spire retuse, concealed 

 by a copious deposite of callus : Right lip toothed within, broadly 

 reflected externally, white. Columella with six or seven folds. — 

 The last but one, is much broader and stouter than the rest, bifid, 

 and extends outwardly nearly to the basal notch which is very deep. 



Length 0.23 inches (6 millimetres.) Breadth 0.14 inches (3£ 

 millimetres). 



Habitat. — West Indies 1 



Remarks. — An elegant little shell belonging to the group of 

 which J\F. tesselata, multiUneata, interrup'a and obesa form a part, 

 and closely allied to the first. It differs from that in its much more 

 diminutive size, more delicate Btyle of coloring, and the»wider sepa- 

 ration of the ti sselated hands. The right lip is more strongly re- 

 ;<(! and devoid of the chesnut color exhibited in the M. tesse- 

 lata. The specimens on which this description is founded were 

 kindly furnished me by Professor C. B. Adams, of Amherst Col- 

 lege, Massachusetts. 



3. MARGINELLA. Philippinarum. Plate XVII., Fig. 3. 



Marginclla avena, Sow. jr., (not Kiener) Thesaurus Conchyliorum, Vol. i. p. 391, 



Plate 76, Fig. 130. 



Testa elongato-ovata, cylindracea, nitida, sabdiaphana, flavida, rufo pallidc tri- 

 fasciat.'i ; spira brcvi, obtusa ; anfraelibus quatuor, vix perspicuis: labro albo, propo 

 medium <"ii-tricto, extus subvaricoso, aurantio subtincto: plicis quatuor, duabus 

 antcrioribus obliijais, in imam convergentibus. 



Inscription. — Shell oblong-ovate, cylindric, polished, some- 

 what diaphanous, yellowish white, crossed by three hands of a 

 darker color. Spire short, with about four whorls. Suture incon- 



