INSTITUTE OF SCIENCE, PHILADELPHIA. ^2^ 



tion, was the less inexcusable since Watson himself calls attention to some of 

 the differences between his specimens and those sent him by Professor 

 Seguenza. 



Punctiirella noacldna L. is reported from the Pleistocene of Beauport, in 

 Labrador, but I do not know of any species in the Tertiary of our Southeast- 

 ern coast. 



Genus EMARGINULA Lamarck. 



Subgenus Rimula Defrance. 



Bmargrinula (Rimula) caroliniana n. s. 



Plate 20, figure 10. 



Himula caroliniana Dall, this memoir, p. 213, Jan., 1892. 



Pliocene of the Waccamaw beds, South Carolina, Johnson. 



Shell small, thin, oval, with the apex nearly over the posterior margin ; 

 with a small smooth nucleus of a single whorl ; moderately elevated, the 

 anterior slope elegantly convex, the posterior slope short and excavated ; 

 sculpture of subequal, rounded radiating threads, swerving slightly to the right, 

 <;rossed by subequal concentric ridges, which near the apex are slightly irregu- 

 lar, but toward the base present an even reticulation slightly nodulous at the 

 intersections ; foramen narrow, long, with a marked fasciole, situated a little 

 nearer the anterior margin ; interior smooth, the fasciole slightly convex, the 

 foramen prolonged a little forward by a short groove. Alt. 2.0 ; Ion. 5.0 ; max. 

 diam. 3.25 mm. 



This is a very elegant little species, related to the R. frenulata Dall of 

 the recent fauna, but shorter, rounder, with the foramen more central and with 

 .a somewhat different sculpture. 



Subgenus Bmarginula s. s. 



A single species is known from the Claibornian, E. arata Conrad, and 

 another from the Eocene of California, E. radiata Gabb. To these a third is 

 .now added from the Pliocene of Florida. 



Emarginula Pilsbryi n. s. 

 Plate 2t, figures 8, 8 a. 



Pliocene of the Caloosahatchie beds, Florida, Dall. 



Shell small, thin, elevated, with the apex in the posterior third ; nucleus 

 smooth, hardly forming a whorl ; anterior slope arched, convex, posterior 

 shorter, concave; sculpture of low, alternated, rather wide, not dichotomous, 

 radiating ribs with narrower interspaces, crossed by numerous close-set, 

 rather wide, obscure concentric ridges ; the latter are narrower and more 

 crowded near the apex, and wider and more irregular nearer the base ; the 

 intersections are somewhat tumid, but not nodulous; fasciole convex like a 

 rib; the notch deep, narrow, near!)- medial; interior smooth, the margins of 



