﻿NO. 2 FOSSILS FROM PANAMA AND COSTA RICA DALL J 



aperture is almost or quite circular. Height 30.0 ; max. diameter of 

 base 21.0; min. diameter of same 17.0; aperture 9.0 mm. 



Station 6037, Toro Point, 35 to 50 ft. above the sea. Types, 

 U. S. Nat. Mus. 214340. 



This species is most nearly allied to E. (S.) nobile Fischer and 

 Bernardi, now recent in the deep water of the Greater Antilles. The 

 recent species has higher and less solid varices and the interspaces 

 are spirally, obsoletely striated, while E. toroense is destitute of any 

 spiral sculpture. 



With this species was found a fragment of what is perhaps a dis- 

 tinct species, with more numerous varices which rise vertically from 

 the surface instead of being backwardly appressed. This has a 

 diameter of some 45 mm. and a more oval aperture with a diameter 

 vertically measured of 15 mm. Until better material is obtained this 

 might stand as E. toroense var. insigne. Type, U. S. Nat. Mus. 

 214346. 



JVTARGINELLA MACDONALDI, new species 



Shell large, solid, polished, of about four whorls, the spire, which 

 is more or less covered with callus, rising only some 2.5 mm. above 

 the outer lip, and the maximum diameter of the shell is situated 

 only about 10 mm. in front of the summit. The aperture is nearly 

 as long as the shell and in adults deposits a mass -of callus on the 

 two lips which recalls that of the base of Cyprcea; the aperture is 

 narrow behind but flares at the posterior sinus, above and 

 around which on the back of the shell is a special mass of callus. 

 There are several species of the region which possess this peculiarity, 

 a recent one being M. cincta Kiener. The outer lip is heavily loaded 

 with enamel, is flattened on its basal surface and grooved behind 

 outside. The labrum has a thinner but also flattened layer of callus 

 and a small ridge of it near to and parallel with the aperture. The 

 pillar has four strong plaits graduated in their interspaces, and most 

 adjacent anteriorly. The canal is wide but shallow. Length of shell 

 28; max. diameter of base 15 ; vertical diameter 11 mm. 



Station 5882 i, Costa Rica, MacDonald. Types, U. S. Nat. Mus. 

 214348. 



This fine species is very numerous in and characteristic of late 

 Tertiary beds in eastern Costa Rica, of which the age is not yet 

 positively determined. 



