56 EXTINCT MONSTERS 



altogether safe to conclude that, because in so many ways they 

 resembled king-crabs, they therefore had the same habit of 

 burrowing into the soft muddy or sandy bed of the sea, as some 

 authorities have supposed. Seeing that there is a difference of 



FIG. 7. Silurian Merostomata. 

 1. Stylonurus. 2. Eurypterus. (After H. Woodward.) 



opinion on this subject, the author consulted Dr. H. Woodward 

 on the question, who said he thought it unlikely, seeing that, in 

 some of them, such as the Pterygotus, the eyes are placed on the 

 margin of the head-shield; for it would hardly care to rub its 

 eyes with sand. Whether it chose at times to bury its long body 



