X-Iaudlirach] 



CANADIAN FOSSIL INSECTS 



127 



length. The head is almost equilaterally triangular, with very 

 slightly bulging eyes. The first and third joints of the antennae are 

 nearly equal in length, and singly are about a third longer than the 

 second. The first is much longer than the head. The head and 

 thorax taken together are somewhat longer than the abdomen, the 

 thorax alone being somewhat shorter. The abdomen is nearly two 

 and one-half times as long as it is broad at the base, and exhibits the 

 slightly projecting corners of the preanal (7th) segment. The thorax 

 is only a little wider than the abdomen and not more than one and 

 one-half times as long as broad. The femora of the front legs are 

 somewhat longer than their tibiae, and reach scarcely one-third the 

 length of the femora of the middle legs. The latter joints are dis- 

 tinctly shorter than those of the huM legs, and are as long as the 

 thorax and abdomen taken together. The femora of the hind legs 

 are as long as the head and body taken together. The length of the 

 tibiae of the middle legs is about five-sixths that of their femora, 

 while the tibiae of the hind legs are scarcely two-thirds as long as the 

 femora. 



These dimensions sufficiently characterize the species, and prove 

 it to be distinct from G. stall. 



Fig. 35. — Gerris defuncta, Handlirsoh 



Pentatomidce : — 



Teleoschistiis antiquus, Scudder. (Quesnel.) 

 In the present collection is found only one pentatomid form, and 

 this does not permit of an exact identification. 



