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ing the opposite niiarg-in ; apical nortion of wing hairy and large!; 

 occupied hy a large blackish fuscous cloud, the stigmal, marginal 

 and postmarginal veins still blacker, but the postmarginal appears 

 to extend a little beyond this black area. Abdomen as long as 

 the thorax, but much smaller in bulk, shining, depressed above, 

 as is usual in dead Encyrtids. this being a usual post mortem 

 change. Length 1.5 mm. 



HAB. Nogales, Arizona ; lired, no. 2444. 



Saronofiini Perk. 



This hyperparasite was bred (no. 2448b) from the cocoon of 

 Neogonatopits uiimits and appears to be almost or quite identical 

 with the Australian form. I am therefore inclined to think that 

 Saronotnm aiiwricainini and S. ousfraliae are one species, my orig- 

 inal example of the former being merely a variation of the latter. 

 Mr. Koebele captured what might be the male of Saronotnm. It 

 has longer antennae and only rudimentary wings and dififers in 

 other characters, such as are probably only sexual. Other in- 

 stances of Chalcids that are parasitic on other Hymenoptera hav- 

 ing flightless males and fully winged females are known to me, 

 but I should hesitate to describe the specimen in question as a 

 male of Saronotum without further evidence. 



EULOPHIDAE. 



When in Australia, the possibility of the Tetrastichine. Oote- 

 trastichus beaftis, being hyperparasitic at once suggested itself 

 to us, but the idea was discarded. Later on, lireeding of the spe- 

 cies in confinement for several generations made it appear cer- 

 tain that it was a primary egg-parasite, and not bred at the ex- 

 pense of the Mymiarids. Subsequently Dr. L. O. Howard called 

 my attention to the fact that theoretically it ought to be a hyper- 

 parasite. Ashmead has recently described certain Tetrastichines 

 as being parasitic on Mymaridae, but without valid proof of the 

 relationship. Accordingly T carried out some further experiments 

 w-ith Ootctrastichns bcatns, raising cane-j)lants indoors in covered 

 glass jars, then introducing leaf-hoppers and finally specimens of 

 the oarasite. Tn the two jars employed, everv leaf-hopper Qgg, 

 that was laid in the leaves was destroyed by the Ootctrastichns. 

 When young the larva lives within one of the hopper's eggs, like 

 a Mymarid. but later on emerges and destroys the other eggs in 

 the egg-chamber : then usually bores a gallery for some length 



