April, U)1SJ 



Parasites of Lcaf-IIoppers 



211 



mixed all through it. Many spun above the ground as in some 

 species in Gonatopus, (Fig. 34), are white, shining, and very 

 like a spider's cocoon. According to Perkins (1905) the cocoons 

 of Paradyinus are often adorned with bits of leaf tissue, that of 

 Ncodryiniis roofed over with the ruptured larval sac which is 

 removed from the hopper and attached. The cocoon of Pro- 

 dryinus ormcuidis (Ashm.) is spun beneath the dead hopper 

 (Swezey, lUOo). The cocoon is always composed of two parts, 

 and inner more compact structure, within a more loosely woven 

 part. 



Figure 4. 

 31, cocoon of AphelopHS sp., 32, cocoon of Phorhas mirabilis; 33, cocoon of 

 Chelogynus sp.; 34, cocoon of Haplogonatopus americanus. 



INTERNAL ANATOMY OF THE LARVA. 



Internally the mature larva presents the following char- 

 acteristics. The mouth leads into a narrow pharynx- 

 esophagus the limits of either of the latter not being definable. 

 This opens into a very large, thick-walled mid-intestine, which 

 is blind at its posterior end, not being connected with the hind- 



