SPECIES OF SHRIMPS. 



26 5 



distributed through all the large tanks alike, but their 

 transparent appearance makes them difficult to be 

 seen. The usual position of prawns when at rest 

 is near the edges of rockwork, over which they glide 

 by means of their bristle-like feet. The Crystal 



Fig. 194. 



Common Shrimp (Crangon vulgaris). 

 Fig. 195- 





Palcemon squilla. 



Palace Aquarium is especially rich in Crustacea, both 

 long-tailed, as lobsters, shrimps {Macroura) ; and 

 short-tailed (Brachyurd), as crabs. The shrimps love 

 to burrow and hide in the fine sand at the bottom, 

 and to throw a thin cloud of it over them by means 



