THE CANADIAN ENTOMOLOGIST. 2d 



1854. Lenonte, J. L., Synopsis of the Cucuiides of the U. S. Proc. 

 Acad. Nat. Sci., Phil., VII., p. 73-79- 



1884. Casey, Thos. L., Revision of the Cucujidfe of America, 

 north of Mexico. Trans. Am. Ent. Soc, XL, 1884, p. 69 to 112, pi. 

 IV.-VIII. 



SUMMARY OF THE U. S. PHASMID^. 



BV S. H. SCUDDER, CAMBRIDGE, MASS. 



The following table, adapted from Brunner von Wattenwyl and Stal, 

 will enable any one quickly to determine the genera in his collection of 

 U. S. Phasmidfe. Our species are few in number and all apterous. Only 

 one of them, Diapheromera femorata (Say), extends into Canada. 



A^ Tibis not furnished at apex beneath with a sunken areola to receive 

 the base of the tarsi when bent upon them. (All of our genera of this 

 division belong to the Bacunculida?, in which the antennae are much longer 

 than the anterior femora aud furnished with at least thirty joints, and the 

 median segment is much shorter than the metanotum.) 



b\ Hind femora armed beneath on the median line near apex with 



one or more distinct spines Diapheromera. 



bl Hind femora unarmed beneath next apex. 



c\ Head, especially in the $, furnished in front between the 

 eyes with a pair of tubercles or longitudinal rugae, sometimes 

 highly developed ; hind femora of $ hardly extending beyond 

 the middle of the fourth abdominal segment, relatively stout ; 

 first joint of hind tarsi of % shorter than the other joints 



together Sermyle. 



c^. Head unarmed in both sexes ; hind femora of ? reaching 

 the end of the fourth abdominal segment, relatively slender; 

 first joint of hind tarsi of ? about equal to the other joints 



together Baamculus. 



A?. Tibiaj furnished at apex beneath with a sunken areola to receive the 

 base of the tarsi when bent upon them. 



b^ Antennae many jointed, longer than the fore femora ; median 

 segment shorter than the metanotum ; without spines on head, 

 thorax or legs ; anterior segments of abdomen transverse, at least in 

 the ?. 



