EMARGINULA. 263 



height often exceeds the breadth. Those from the 

 Mediterranean are mnch smaller than oivrs. The late 

 Chevalier Verany found one in the stomach of a flamingo 

 that was killed in the neighbourhood of Nice. 



It is the E. conica of Schumacher and Risso ; but 

 the description given by the former is generic only, and 

 that by the latter is (as usual) almost enigmatical. 

 Lamarck's E. rubra is probably also the same species. 

 The Mediterranean or dwarf form is E.pileolus, Michaud, 

 E. capuliformis , Philippi, E. curvirostris, Deshayes, and 

 E. Costce, Tiberi. We have here a goodly choice of 

 specific names. I would have adopted the first and 

 earliest (conica) , if any modern conchologist of repute 

 had set the example ; it is besides more characteristic 

 and appropriate than rosea. Montagu must have known 

 the present shell, but considered it a variety of E. fissara ; 

 he sent a specimen with the latter specific name to Mr. 

 Dillwyn. 



3. E. crassa*", J. Sowerby. 



E. crassa, Sow. Min. Conch, p. 73, t. 33, upper figures ; F. & H. ii. p. 481, 

 pi. lxiii. f. 2, and (animal) pi. C C. f. 2. 



Body white : mantle rather thick at its edge : tentacles thick 

 and cylindrical: eyes apparently smaller in proportion than 

 those of our other species : foot having narrow sides, which, at 

 their junction with the rest of the body, are studded with 

 about 30 short somewhat unequal cirri (Alder). 



Shell usually more depressed than that of cither of the two 

 former species, moderately solid, opaque, slightly glossy : 

 sculpture, 40-50 broad and compressed longitudinal ribs (each 

 of which is sometimes divided into three), with as many 

 smaller intermediate ones ; all these ribs are crossed by fine, 

 equally numerous, and wavy concentric striae or wrinkles, pro- 

 ducing a delicately granulated appearance ; the surface is like- 

 wise covered with minute white glistening dots arranged in 

 longitudinal rows : colour white : beak small and somewhat 



* Solid. 



