BIVALVE MOLLUSC A. 





Species of the genus Pechoicidiis are abundant on the shores of 

 the Mediterranean and along the Atlantic coast. If we take up at 

 hazard a handful of shells on any part of the French coast, one-third 

 will consist of Pedunadus. They are found mixed with species of 

 the genera Cardium, Verms, Solen, and Pecten. Their round and 

 robust frame attracts much attention. They form the first of those 

 charming infantile collections which are gathered at our mother's 



feet. 



The animal which inhabits this pretty shell is moulded on its 



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Fig. 154. — rectunculu.s pecteniformis 

 (Lamarck). 



^'g- 155- — Pectii:icuius .scnpaiS 

 '■L.-rn). 



curvature; like the shell, it is round and squat ; it is furnished witli a 

 mouth, large, and thick for its size, and with brancliis. When the 

 animal is taken alive, it sometimes e.xudes a thick mucous liquid 

 over the shell, which has disgusted many a young collector with his 

 capture. 



Among numerous species of Pecfuncidus we note as wortliy of 

 representation : P. aurejhia. Reeve (Fig. 152) ; P. Delessertii, Reeve 

 (Fig. 153); P. pectemjorinis, Lamarck (Fig. 154); and P. serif fi/s. 

 Born (Fig. 155). 



