X 



KING-CRABS 



26l 



many Copepods. Burrowing animals like Limulus are usual lv 

 free from these messmates. King-crabs have a self-respectin-. 

 well -groomed appearance. On the rounded dorsal surface the 

 chitinous covering is produced into a certain number of spines 



-.1 



Fii;. l.vj. Dorsal view of the Kimr-crab, Limulus jpolyphf.mus, x \. From Slii;>l.'\ 

 MacBride. 1, Car:ipacr covo-in^ ]inisoiiia ; _'. meso- .-mil meta-soma ; 3, ti 



l, niciliiui eye : "., ];iii'i-al eye. 



arranged in a incdiiin and two lateral rmvs. The anterior nieilian 

 spine overhangs the median eyes, and the anterior lateral -]>me 

 on oac.h side overshadows the lar-e lateral eyea 



The vaulted earajiaee, is turned in on the under side, where 

 there is a Hat rim which widen- anteriorly, and on the ii 

 cilge this rim borders a sunken area, into thr concavity of 



