SECRETARY'S REPORT. 



167 



Fig. 41. 



mens being sometimes of a yellowish hue, and the sutures not 

 obviously black. The length from head to tip of abdomen is 

 about .4 of an inch ; wings expand .7 or more. 



Ichnetivion parata of Say, (figure 41, Harr., 

 male,) was also found in considerable numbers 

 parasitic upon the " arnay worms," and is one of 

 our commonest species. The prevailing color 

 is black ; head in front and base of the antennae 

 beneath yellow, both black above ; orbits of the 

 eyes yellow ; thorax with two" short yellow lines before the wings, 

 almost confluent toward the head, a small yellow spot often 

 divided into two lines in the middle between the wings ; scutel 

 yellow ; tegulse yellow, wings almost hyaline, stigma reddish 

 yellow ; metathorax with a large yellow spot often longitudi- 

 nally divided through the middle by a black line, which is 

 continuous with the black peduncle ; abdomen black, with from 

 two to four yellow bands ; feet yellow, hind femora black, 

 except the base, hind tibiee black at the apex. Length .6 or 

 more ; wings expand about .9. 



Tragus exesSrius of Brulle, or the tawny Trogus (^exesdrius, 

 from the Latin signifies eating out,) is of a tawny color through- 

 out, the antennae only being a little darker toward their tips 

 and the wings of a deep smoky tint. It is more than three- 

 quarters of an inch in length, and about an inch and a half 

 across the wings. It is chiefly parasitic on the caterpillar of 

 Asterias butterfly. Papilio asterias 

 of Cramer, which feeds on the carrot, 

 parsnip, fennel, parsley and other 

 umbellate plants. We find in Mas- 

 sachusetts several species of ich- 

 neumons with the three bristle-like 

 appendages of an enormous length, 

 measuring three and even four times 

 the length of the body. These belong 

 to the genus Pimpla of Fabricius, and 

 seem as though specially appointed to 

 prey upon the wood-wasps or borers 

 of the family Urocerida. 



Pimpla lundtor of Fabricius, or the yellow spotted Pimpla, 

 (figure 42, male,) (Junate signifies marked with crescent shaped 

 spots,) is of reddish brown color spotted and striped with yellow, 



Fig. 42. 



