New York Agricultural, Experiment Station. 461 



tions of these hymenopterons it seems probable that most of them 

 were reared from eggs of nigricornis or possibly quadripunctatus. 

 The following is an annotated list of these insects: 



1. Macrorileya cecanthi. Ashmead. 



Ashmead, Carnegie Mus. Mem. I, No. 4 (Serial No. 25). 1904. 

 Riley a sp. 

 Bruner, Nebr. Agr. Exp. Sta. Bui. 14: 126. 1890. 



Bred from (Ecanthus eggs in twigs. The speciea of tree cricket was not named, 

 but it was probably nigricornis or latipennis. 



2. Anastatus (Antigaster) mirabilis. Walsh. 



Ashmead, Ins. Life 7: 245. 1894. 



" Captured in act of ovipositing in eggs of fasciatus " (nigricornis). 



3. Polynema bifasciatipenne. Girault. 



Girault, Jour. N. Y. Ent. Soc. 18: 254. 1910. 



Recorded by several writers from eggs of QLcanthus in raspberry, resin weed, 



Grindelia, etc. The eggs were probably those of nigricornis in all cases. 

 We have reared this species from eggs of nigricornis in raspberry. 



4. Teleas (?) 



Ayer, ' Bost. Soc. Nat. His. 3: No. 8. 1884. 



Review A mer. Nat. 18:537. 1884. 

 Recorded as a parasite of niveiis, but since the eggs were taken from the pith of 

 elder they were probably those of nigricornis. 



5. Caloteleia sp. 



Bruner, Nebr. Agr. Exp. Sta. Bui. 14: 126. 1890. 

 Bred from twigs containing eggs of Qicanthus. 



6. Bari/conus aicanthi. Riley. 



Riley & Howard, Ins. Life, 4: 124. 1891. 

 Eggs of niveus (probably nigricornis), Nebr. 



7. Cacus wcanthi Riley. 



Riley & Howard, Ins. Life, 4: 124. 1891. 

 Eggs of niveus (probably nigricornis), Kans. and Ind. 

 Eggs of latipennis. Mo. 



We have reared this species from eggs of nigricornis in raspberry and have the 

 larval and pupal stages. 



8. Idris sp. 



Webster, Ins. Life, 3: 345. 1891. 



Recorded from eggs of niveus (probably nigricornis) in raspberry canes. 



An adult of Polynema bifasciatipenne (Fig. 27) was found on Sep- 

 tember 17, 1910, running about a portion of a raspberry cane in which 

 eggs of nigricornis had been deposited. On September 26 a small 

 larva which was a little over 1 mm. long was found attached to 

 an egg of this species of cricket taken from the same planting. It 

 was thought that this was a larva of Polynema but we were unable 

 to rear the insect to the adult stage. 



In 1912, from a box containing raspberry canes with eggs of 

 nigricornis, an adult bifasciatipenne emerged on August 24, another 

 on September 3, and a third specimen on September 4. The adults 

 are slender insects about 2 mm. long, with long legs and peduncled 

 abdomen. The color is yellowish brown. The fore wings are broad 



