LEE BARKER WALTON 37 



R. sylvaticus was collected by Leidy in 1851-58 and 

 the material evidently lost. Since then the writer has 

 taken it at Gambier and Urbana, O., and at Meadville, 

 Pa. It is about 10 mm. long, grayish black with two 

 darker longitudinal lines dorsally. K. atrocyaneiis is 

 about 20 mm. long when in a living condition, and uni- 

 formly dark blue in color. It has only been found in 

 Gambier, O. When collected, specimens should be killed 

 almost immediately with some hot "killing fluid" inas- 

 much as they die and disintegrate very quickly. They 

 may, however, be kept alive for several hours in a small 

 clean vial provided there is also placed within a piece of 

 a partially decayed leaf. 



