EMARGINULA. 251 



E. papillosa Risso, Hist. Nat. de l'Eur. Merid. 1826, iv, p. 260, 

 f. 147.— Jeffreys, P. Z. S. 1882, p. Q79.—E. Adriatica, Costa, 

 teste Jeffr. 



E. cancellata Philippi. PI. 28, fig. 35. 



Shell ovate, conical, front slope convex, posterior slope straight, 

 about half the length of the shell ; apex recurved, situated half-way 

 between the center and the posterior end. Sculptured with close 

 radiating ribs alternately larger and smaller, the interstices very 

 closely latticed ; radiating ribs 62-68 in all. Inside white ; a white 

 callus extending downward to the narrow fissure in front ; this slit 

 is about one-fourth as long as the shell. The anal fasciole has rather 

 distant arched lamellae. Color white or yellowish. 



Length 12-13, width 9-10, alt. 7-8 mill. 



Mediterranean and Adriatic Seas; Atlantic Ocean at Madeira, 

 Channel Is., 8-250 fms. ; Gulf of Mexico, off Havana and Barbados, 

 100-127 fms. 



E. cancellata Phil. Enum. Moll. Sicil. i, p. 114, t. 7, f. 15. — and 

 of Weinkauff, Jeffreys, Sowerby, Buquoy, Dautzenberg & 

 Dollfuss, (Moll, du Roussillon, p. 452) et al. — E. sicula Gray, Pot. 

 & Mich. Galerie, i, p. 518, t. 36, f. 11, 12, (7 f E. sicula Gray).— E. 

 jissura Payr. et al., not of Linne. — E. reticulata Risso, not of 

 Sowerby.—// E. conica Blainv. Malac, t. 48, f. 4. 



It is larger, more elevated than E. elongata, and has many more 

 riblets. It is less elevated than E. jissura (reticulata Auct.), and 

 has more ribs and finer concentric bars in the interstices than that 

 species. Dall says that the American specimens are a little more 

 elegant in scnlptnre than the European, but may fairly be referred 

 to the same species (' Blake ' Gastrop., p. 406.) 



E. magnifica Pilsbry. PI. 64, figs. 5, 6. 



Shell large, elevated, anterior slope convex, posterior slope con- 

 cave above, then straight ; apex recurved, situated at the posterior 

 fourth of the shell's length. Sculpture consisting of very numerous 

 and close, unequal, narrow radiating riblets, crossed by rather 

 thick, somewhat irregular concentric threads, cutting the interstices 

 into pits and forming rounded nodes, upon the radii. The slit is 

 one-fifth the length of the shell ; slit-fasciole distinct, finely sculp- 

 tured with close arcuate transverse lamellae. Inside there is a 

 rather strong callus along the edges of the slit and extending up- 



