1921] 3li(ir — A Symhiotic Organism in Fulgorids 59 



{E. erosa Loew), pleura whitish pruinose, scutellum and abdomen 

 dark brown, the fourth and fifth segments blackish. Halteres 

 white. Legs light brown. Wings grayish hyaline with the tip 

 beyond the outer cross-band whitish, the inner edge of this baud 

 poorly defined, the middle band extending from the costa (between 

 the ends of the first and second veins), across the posterior cross- 

 vein to the tip of the fifth vein, the inner band extending from 

 the end of the auxiliary across the base of the discal cell to the 

 tip of the anal vein, base of the wing yellow. Length 5 nnn. 



One specimen, collected by Mr. S. M. Dohanian, at Kelley Field, 

 near San Antonio. Texas. April 27. 1918. 



Stegana barretti sp. uov. 



Female. Face whitish, cheeks brown, shining, front brownish 

 black, opaque, antenna brown. Thorax, scutellum and abdomen 

 bluish black, shining, sparsely covered with fine black hairs, humeri 

 and a large spot on the pleura below the base of the wing, snow 

 white. Femora and tibije black, tarsi yellow. Halteres yellow. 

 Wings hyaline, with a slight yellow tinge. Length 3.5 mm. 



Collected at Amecameca, Mexico, Sept., 1900, by Mr. 0. W. 

 Barrett. 



A SYMBIOTIC ORGAXISM IX FULGORIDS. 



By F. Muir, 



Hawaiian Sugar Planters' Experiment Station, Honolulu, T. If. 



Wlien working on the natural enemies of the delphacid, Perkin- 

 siella saccharicida, in Australia, in the latter part of 1919, I foimd 

 that about eiglity per cent of the eggs of this insect in the field 

 were destroyed, and a fupgus always present. At first I took 

 the fungus to be the cause of the destruction of the eggs, but upon 

 further investigation, I found that this was not so, and that these 

 eggs were all punctured and their contents sucked up by a Mirid, 

 Cyrtorhinns mundulus (Bred.). 



Further observations revealed the fact that the voung, adults 



