Ichneumonidae 497 



In isolation vials the adults lived about 36 hours without food. By 

 feeding the wasps a mixture of 40% honey and 60% water they were 

 kept alive for more than 3 weeks. 



Hemiteles hungerjordi, H. ciishmani, H. cheboyganensis, and H. 

 pimplae were reared by these methods. By the same technique Cyrto- 

 gaster dineutes was successfully reared through two generations and a 

 partial third. 



Reference 



For the rearing of ichneumonids see also p. 517. 



REARING PANISCUS 



Arlo M. Vance, U. S. Bureau of Entomology and Plant Quarantine 



OVIPOSITION by females of Paniscus spinipes and P. geminatus 

 var. sayi on larvae of the corn ear-worm Heliothis obsoleta, and 

 on several cutworm and army worm larvae, was obtained within a 

 cheesecloth-covered glass cylinder 20 inches in height and 10 inches in 

 diameter under laboratory conditions, temperature varying from about 

 6o° to 7 6° F. In the cage a nearly full grown ear-worm larva was 

 isolated on each of a number of sections of corn ear impaled on small 

 spikes driven at intervals in an upright block of wood 16 inches high 

 and 2 inches square. Food in the form of a hanging drop of thick honey 

 and a 17% sugar solution in a watch glass was supplied the parasites. 

 Each ear-worm larva parasitized with eggs of Paniscus was removed 

 from the cage, placed on a few inches of sterile soil in a jelly glass, and 

 fed with corn kernels until it entered the soil to pupate. Within the 

 pupal cell made by the ear-worm, one of the parasitic larvae destroyed 

 its host and constructed its cocoon. Usually the Paniscus cocoon was 

 removed about three weeks later and buried about an inch deep in soil 

 in a glass vial where it remained until the adult insect emerged. Mating 

 of P. spinipes was secured in the type of cage above described. 



Bibliography 



Vance, Arlo M. 1927. On the biology of some ichneumonids of the genus Panis- 

 cus Schrk. Ann. Ent. Soc. Amer. 20:405. 



CULTURE OF HABROCYTUS CEREALELLAE, PARASITE 

 OF THE ANGOUMOIS GRAIN MOTH 



B. B. Fulton, North Carolina State College 



THE technique used for rearing the parasites under observation 

 was different from that employed by Noble, who succeeded in get- 

 ting oviposition on host larvae removed from the grain and confined 

 with the female parasites in small tubes. The writer made a few un- 



