492 Descriptions of New Species of Bullia and Marginalia. 



2. MARGINELLA Chrysomelina. Plate XVII., Fig. 2. 



Testa ovali, liitidti, alba ; maculis subquadratis fulvis scxfasciata ; fasciis inter- 

 mediis nivois : fpira retuaa, obtecta ; apcrtura angusla, antice valdc emarginata : 

 labro inti'is crcnulato, extus albo, varicoso ; columella 6 ant 7 plicaia, plicis supe- 

 rioribus obscuris ; plica pcnultima tumida, bifida, exteriiis products. 



Description. — Shell oval, polished, whitish, crossed by 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 (3J 

 millimetres). 



Habitat. — West Indies ? 



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

 which M. tessclata, multilineata, interrupa and obesa form a part, 

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

 diminutivo size, more delicate style of coloring, and the wider sepa- 

 ration of the tesselated bands. The right lip is more strongly re- 

 flected 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. 



Marginella avena, Sow. jr., (not Kiencr) Thesaurus Conchyliorum, Vol. i. p. 391, 

 Plate 76, Fig. 130. 



Testa elongato-ovata, cylindracea, nitida, subdinphana, flavida, rufo pallid6 tri- 

 fasciata ; spira brevi, obtusa ; anfractibus quatuor, vix perapicuis : labro albo, prope 

 medium constricto, extue subvaricoso, aurantio subtiucto: plicis quatuor, duabus 

 antcrioribus obliquis, in unam convorgentibus. 



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

 wbat diaphanous, yellowish white, crossed by three bands of a 

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



