7. MtcrophtJialnia disjuncia Wied. Megaprosopis michigancn- 

 sis). — A large Taehinid fly parasite of white-gTul)s, said to be 

 common in the Central Western States. Mr. Vassiliev reports the 

 same Taehinid as parasitizing the grubs of Anisoplia austriaca, and 

 three other species, in southern Russia (32). Another closely related 

 species in the States is Micro plith alma pruinosa, also of wide dis- 

 tribution. 



8. Moclilosoma {Prosena) lacertosa V. d. W. — This large Dexiid 

 fly was reported by J. H. T. Towaisend as issuing in great numbers 

 from the puparia in the soil in pasture lands near Colonia Garcia, 

 Chihuahua, northern ]\[exico, and he was certain they were parasi- 

 tizing white-grub (29). The determination of the fly was made by 

 Doctor Coquillet. (A related species, Prosena siberita, attacks grubs 

 of Adoretes compressu)^ in Java.) (10). 



9. Ptilodexia (Estheria) tihialis Desv. — Another Dexiid fly, which 

 Davis mentions as parasitizing white-grubs in Texas (5, p. 271). 



10. Pyrophorus sp. — An Elaterid beetle, very abundant in south- 

 ern Texas, the larva? of which are predacious upon a common white- 

 grub of that section. 



Parasites of the Adults. 



11. Pi/rgota undata Wied. — An Ortalid fly, the commonest and 

 most efficient parasite of adult May-beetles in the Central States, 

 and also generally distributed. Another species, more local in habitat, 

 is Pyrgofa valida Har. These are nocturnal in habits, as arc also 

 the following Taehinid flies. 



12. Cryptomeigenia theutis Walk. — A Taehinid fly quite com- 

 monly infesting the bodies of adult May-beetles in some sections of 

 the United States. The only other representative of the genus known 

 to the writer is the common Porto Rican species, Cryptomeigenia 

 aurifacics Wal. 



13. Entrixa exile Coq. {Nemoraea masuria Walk.) — xVnother Taehi- 

 nid fly parasitizing I\Iay-beetles. It has habits like the preceding, 

 infesting the beetle body. 



14. Biomyia lack nosternae.— This Taehinid, identified by Mr. Wal- 

 ton, is the one referred to by Dr. Forbes as ViviaJKi s]). iu Bui. 110 

 of the Illinois Agr. Exp. Station, according to Mr. J. J. Davis (5). 

 It was reared from the adult of PhyUophaga crenuUta. 



15. Sarcophaga heUcis Towns.— This Sarcophagid fly was reared 

 from adults of PhyUophaga arcuata collected at Washington. 1). C. 



59 



