884 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



Genus TURTONIA Alder. 



61. Tttr^onia mmwto (Fabricius), 1780; Pleistocene; Recent. 



Genus MONTACUTA Turton. 



62. Montacuta claihornianaJ)2i\\; Claibornian. 



63. Montaeuta chipolana Dall ; Oligocene, Florida. 



64. Montaeuta actinophora Dall; Oligoceue, Florida. 



65. Montaeuta petropolitana Dall; Miocene, Virginia. 

 (}6. Montaeuta sagrinata Dull; Miocene, Virginia. 



67. Montaeuta floridana Dall; Pliocene; Recent. 



Genus ALIGENA H, C. Lea. 



68. Aligena wqnata Conrad, 1843; Miocene, Pliocene. 

 60. Aligena pustulosa Dall, 1898; Oligocene, Florida. 



70. Aligena lineata Dall; Oligocene, Florida. 



71. Aligena sharpei O. Meyer, 1888; ? Miocene, Maryland. 



72. Aligena minor Dall; Miocene, North Carolina. 



73. Aligena elevata Stimpson, 1851; Pleistocene and Recenty 



DESCRIPTIONS OF NEW SPECIES AND REMARKS ON OTHERS 

 IMPERFECTLY KNOWN. 



[The letter and number before the remarks refer to the preceding lists.] 

 SOLECARDIA MORCHII Dall. 

 Scintilla ehurnea MoRCH, Journ. tie Conchyl., XXIV, 1876, p. 373. 



A. 1. Though described from the Swift collection, now the property 

 of the Academy of Natural Sciences, Philadelphia, it seems not to exist 

 there at present. It is unflgured. Miirch says that it is nearest to 

 "*S'. h(ctea Des^hayes," but the only S. lactea in the literature is of 

 Sowerby, and this is probably what is meant. 



SOLECARDIA EBURNEA Conrad. 



Solecardia eburnea Conrad, Proc. Acad. Nat. Sci., Phila., IV, 1849, p. 155; Journ. 

 Acad. Nat. Sci., 2d sor., 1, 1850, p. 278, pi. xxxix, fig. 1. 



B. 2. Specimens of this species were compared by Carpenter with the 

 type of iSeintilla cumingi in the British Museum and proved consiieciflc. 



SPORTELLA PILSBRYI Dall. 



Sportella (Fabella) pilsbryi, uew siiecies. 



(Plate LXXXVIII, tig. 9.) 



A. 2. Shell small, compressed, elongate-ovate, inequilateral, the ante- 

 rior part much the longest; anterior dorsal margin nearly straight, base 

 evenly arcuate, ends rounded; external ligament on a well-marked 

 nymph, pit for the resilium rather small; teeth in the left valve normal. 



