PHILOSCIA MUSCORUM. 451 



This species is smooth and shining, generally of a 

 fulvous colour, with dark black patches and white spots. 

 The head is transversely elliptical and arched in front, 

 being destitute of any lateral or median lobe. The 

 internal antennae are small and inconspicuous ; the outer 

 antennae are cylindrical and setose. The tail is much 

 narrower than the terminal segments of the body, with 

 the last ring broadly triangular, its apex being acute, 

 and its terminal appendages having the outer division 

 elongate-trigonate, spinous along its lateral margins ; the 

 inner lobe nearly as long as the latter. 



The species runs with great ra^iidity, and seeks the 

 sunshine. It is widely distributed, and very common. 

 It prefers dry rather than damp situations, under leaves, 

 stones, and moss ; also near the sea-shore. It is found 

 abundantly throughout the southern part of England. 

 Professor Bell found it under stones at Cheriton, and 

 observes in his manuscript notes — " I found it of every 

 shade of colour, from rich black to reddish brown and 

 light green. It is more active than any other species, 

 and the crust is more tender, and easily injured." Add- 

 ing — '* I believe colour to be absolutely valueless as a 

 specific character in the whole of the Oniscidcs.'" 



Dublin, Wicklow, Meath, Wexford, Cork, Waterford, 

 and Tyrone, have been recorded as Irish localities. 



G G Ji 



