24 



Mr. S. P. Woodward on the Animals of 



to the centre of the left valve. Adductor moderate, indistinctly 

 composed of two elements ; pallial line continuous. Sexes di- 



Fig. 1. 



Fig. 2. 



Fig. 3. 



Fig. 1 . Animal lying in its upper (left) valve ; right mantle-lobe turned 



back in front. 

 Fig. 2. Animal in right valve, with left mantle-lobe removed. 

 Fig. 3. Section of gills. 



/, liganiCMt ; o. mouth ; /, foot ; u, anterior ; p', posterior pedal 



muscles; p,p, byssusand byssal muscle; «, adductor; v, ventricle; 



i, rectum ; (j. generative organ ; m, gill-suspensors ; r, r, reflected 



gill-margins. 



