PHILOUGRIA. 455 



dually elongated to the fifth joint. The flagellum con- 

 sists of four or five slender joints, generally terminated 

 in a small pencil of setse. 



The hody is elongate-ovate, and the tail is considerably 

 narrower than the former, with the lateral-posterior 

 angles of the second and three following segments pro- 

 minent ; and the terminal segment is broad and truncate 

 at its extremity, with the terminal caudal appendages 

 (uropoda) of considerable size, and partially covered, 

 with the basal portion, somewhat triangular, affixed in a 

 notch in the underside of the posterior margin of the 

 terminal segment. The outer ramus is long and acumi- 

 nated, terminating in a seta ; the inner slender and 

 acuminated, more than half the length of the outer. 



The species are very active, and reside in damp situa- 

 tions, thus agreeing with Philoscia, 



