PLATE 82. 



Page 



Fig. 1. EURYPTERUS DEKAYI. 411* 



1. An individual, natural size, with the dorsal side upwards. One side has boon broken off; 

 and this portion, with the swimming foot, is restored in outline, the same organ on the 

 left side being essentially entire. The upper part of the carapace and the first joints are 

 removed, so as to show the ma.xillary plates, the postoral plate and the bases of the an- 

 terior feet, which are broken off so as not to extend beyond the margin of the carapace. 

 The thoracic appendage is shown in its junction with the first ventral joint, and extending 

 to the base of the fourth joint. 



