lO SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 85 



pendages in position or an uninjured trunk limb. The carapace is 

 thicker than that of Burgcssia hella and the body is firmly attached to 

 the fused segments forming the posterior dorsal shield, and there is a 

 close union between the body of the cephalic region and the carapace 



Fig. I. — Naraoia compacta Walcott. 



a, antennae ; as, anal segment ; ds, reflex margin of posterior carapace ; en, 

 endopodite; ex, exopodite; i, intestine; m, mandible; m' , maxilla; ;»", maxillula; 

 sey, segmented posterior carapace ; st, stomach ; t, telson. 



(About X 5-) Diagrammatic outline of ventral view of appendages, etc. 



that extends from the anterior ventral margin of the latter back to 

 the line of the anterior margin of the posterior dorsal shield. In the 

 restoration (text figs, i, 2) I have made an attempt to incorporate 

 all information available. 



