230 



THALASSINAD^. 



a crevice covered with weeds, for it is sluggish in its mo- 

 tions, and, if distant from a soft bottom in which to sink, 

 incapable of escaping an enemy. A female that I ob- 

 tained, loaded with spawn, was dug out of the sand in 

 the middle of summer.'" 



It is clear that the occurrence of Dr. Leaches specimen 

 amongst prawns must have been purely accidental, as it is 

 essentially a fossorial species, although, as I before ob- 

 served, offering some slight deviations from the typical 

 structure of the group. 



I believe it has not been found either in Scotland or 

 Ireland. I have obtained it from the Mediterranean, 

 and Dr. Milne-Edwards records its being indigenous to the 

 French coast. 



The subject of the vignette below is Barmouth, North 

 Wales, by Mr. C. C. Pyne. 



ir- ' 



fllr^' 



?^ ;^rS. ' V 



