INSECUTOR INSCITI^ MENSTRUUS O 



A very large percentage of these parasites are females, about 

 30 to one male, and parthenogenesis was repeatedly observed, 

 seeming in fact to be a normal condition. 



Reared females, which had been kept isolated each in a sepa- 

 rate vial from the spinning of the cocoon and hence certainly 

 virgins, would pounce at once on a gossypiella larva, introduced 

 into the vial, paralyze it, and lay eggs. 



These eggs would always hatch, barring accidents, and would 

 commonly produce all female offspring, which in turn would 

 oviposit without copulation and again produce females. Four 

 generations consisting exclusively of females were produced 

 in one experiment from a single unfertilized female. 



The life history of this parasite is easily observed in cap- 

 tivity by placing a host larva with the female parasite in a 

 small vial. The parasites issued from caterpillars in stored 

 cotton seeds would not fly away in search of growing cotton, 

 but would search for new victims indoors in seeds. The spe- 

 cies is, on the other hand, equally at home outdoors and readily 

 finds its host in the bolls in the fields. 



The species is recorded in Hawaiian literature as Goniosns 

 cellularis Say. 



A CHALCID PARASITE OF THE PINK BOLL WORM 



(Hymenoptera, Chalcidida) 



By a. a. GIRAULT 



Stomatoceras pertorvus, new species. 



Female. — Similar to the Indian sulcatiscutellum Girault, but 

 the scape, pedicel, funicle 1 (and sometimes 3), tegulae, tarsi, 

 club, knees and tibia (except middle ones sometimes above in 

 the middle), dark reddish; the infuscation under the marginal 

 vein is wider, and there is a faint loop from it to the costal mar- 

 gin beyond the venation; the post marginal vein is distinctly 

 shorter, and shorter than the marginal ; the scutellum has a de- 

 pression between the end of the median sulcus and the apical 

 plate. About the same otherwise. Types compared. 



