12 ORCHESTIIDJ1. 



animal are short and stiff. The mode of progression, 

 when out of the water, is by leaps. The animals are 

 generally terrestrial or subaquatic. This tribe contains 

 but a single family. 



Fam. ORCHESTIID^. 



The superior antennae are never longer than the inferior, 

 and never furnished with a secondary appendage. The 

 mandibles are without a palpiform appendage. The 

 squamiform joints of the legs are largely developed. The 

 caudal appendages are very short and stout, and the pos- 

 terior pair only possess a single branch. 



The following vignette represents the Hoe Gate, Ply- 

 mouth, the house in which Dr. Leach was born. 



