254 EMARG1NULA. 



E. ROSEA Bell. 



Small, elevated-conical, the apex hooked a little over the posterior 

 margin ; altitude of shell less than the length of the mouth or base. 



Shell smaller and much narrower than E. fissura, and otherwise 

 distinguishable in the following particulars : it is proportionately 

 broader in front than behind, and pinched up at the sides ; the 

 front is more arched or convex, and the back more concave ; the 

 longitudinal ribs are more closely set, and mostly equal-sized ; the 

 cancellation is smaller, and exhibits round holes instead of square 

 lattice- work ; the color is often pinkish ; the beak quite overhangs 

 the back margin in full-grown specimens, and it is invariably 

 longer, and greatly incurved ; the slit is much shorter ; the mouth 

 is smaller ; and the inside is frequently reddish-brown and the can- 

 celli are marked by white spots. (Jejfr.) 



Length 5J, breadth 4, alt. 4 mill. 



Southern England ; Ocean Coast of France. 



E. rosea BELL, Zool. Journ. i, p. 52, t. 4, f. 1. FORBES & HAN- 

 LEY, Hist. Brit. Moll, ii, p. 479, t. 63, f. 3. JEFFREYS, Brit. 

 Conch, iii, p. 261, t. 59, f. 3. 



It is less hooked than the following, the mouth larger. In fact, 

 E. rosea is an intermediate between E. fissnra and E. co^ica. 



E. CONICA Schumacher. PI. 28, fig. 19. 



Small, elevated, the apex very strongly hooked over the posterior 

 margin; coarsely latticed ; altitude about equal to the length of 

 the aperture or base. 



Surface rather coarsely latticed ; radiating ribs subequal in front, 

 alternating at the sides, about 25 to 32 in number, crossed by con- 

 centric cords about as far apart as the riblets, cutting the interstices 

 into pits and forming narrow, nodes on the ribs. Aperture oval, 

 margin strongly crenulated ; slit very narrow, about one-third as 

 long .as the aperture ; slit-fasciole a narrow, deep groove. Color 

 yellowish. Length of aperture 4, breadth 3] ; total alt. 3:1-4 mill. 



Mediterranean and Adriatic Seas. 



E. conica SCHUM., Syst. Vers. Test. p. 181, 1817 (founded on 

 Martini's figures, Conchyl. Cab. i, f. 109, 110.) E. pileolus MICH- 

 AUD, Bull. Linn. Soc. Bord. iii, 1829, p. 171, f. 23, 24. E. capuli- 

 formis PHIL., Enum. Moll. Sicil. i, p. 116, t. 7, f. 12. E. costce 

 TIBERI, Journ. de Conchyl. vi, p. 38, t. 2, f. 5, 1857. E. curviros- 

 jris DESK., Exped. Sci. de Moree, iii, 2d pt., p. 134. 



