214 



AN INTRODUCTION TO ZOOLOGY. 



one of the commonest and the most brightly coloured. 



Fig. 68. — Pecien Jacoh(s\ts, the PiV'rim's Scallop Shell, formerly worn as a 

 badge by travellers who had visited PalesLine. 



The Peetens are remarkable for their numerous eyes, 

 which are situated on the mantle. 



The Siphoniata are divided into two groups, the 



