328 



LOWER INVERTEBRATES. 



markings of the body are even more beautiful tlian those of the shell, as is shown by 

 the following description of the colors of a Javanese species, — "a pale, semi-transjia- 

 rent, pinkish-yellow mantle, with a range of semi-elliptic crimson sjjots around the 



Fig. 407. — ( olutn jun 



)S. — Vuftita imptrialis. 



thin free edge, and the remainder covered with vertically-radiating linear spots, 

 and short waved lines of the same color ; the foot, also of a yellowish, delicate 

 pink, is marbled all over with the deejjest and ricliest ci'imson, and the same with 

 the sij)hon. The tentacles are yellowish, with a row of marbled ci-imson spots." 

 Species of Marginella are found in all the warmer seas of the world, some being 

 found in the West Indies and on the coasts of Georgia and Florida. 



- - -. -- „_^^^ ,__ . The olive shells, belonging 



'■ - 1 ^^^™ teethe family Olivid^, have 



always been favorites with 

 collectors on account of the 

 beauty of their smooth and 

 jiolished porcellanous shells. 

 Ill these forms the sj^ire is 

 short, the aperture deeply 

 notched, the columellar li]i is 

 .(ivered with a callous deposit 

 ind usually ornamented with 

 vjblique folds. In the genus 

 Oliva, which receives its 

 name from a shajie somewhat 

 like that of an olive, the apei'ture is long and narrow, and the columellar lip is ])licate. 

 The foot is very large and is laterally extended into two lobes, which, when the animal 



