134 Annals Entomological Society of America [Vol. IV, 



membraneous attachment pad being present. This is a totally 

 new type of maggot and indicates a widely diverse habit from 

 others so far known. Gymnochaeta and allies. 



21st series — Ophirion mirabile gen. et sp. nov. (Peru) dis- 

 sected and drawn, TD 3980. Maggots and eggs rather loosely 

 disposed in long slender tubular uterus, the eggs in two rows 

 obliquely on end; an elbow-like preuterus, uterus arising 

 from inside angle of elbow, common oviduct opening into one 

 end of elbow and the spermathecal and tubular gland ducts 

 into the other end; oviducts long and slender, tubular glands 

 very short; maggots of a peculiar and new type, remarkable 

 in that they appear emarginate laterally and are furnished with 

 a dark-colored pattern. 



22. Pseudodexiine series — Ophirodexia pulchra gen. et 

 sp. nov. (Peru) dissected and drawn, TD 3999. Uterus 

 thick, tubular, in two coils, with eggs and maggots obliquely 

 on end; a true preuterus homologous with the forward half or 

 more of the uterovagina, the uterus having evidently developed 

 from the walls of the vagina proper; spermathecal and tubular 

 gland ducts opening into the preuterus, which has capacity of 

 just one egg; all these ducts very short; tubular glands only 

 about three times as long as preuterus, or as long as common 

 oviduct plus oviduct; oviducts very short and thick; common 

 oviduct much longer and slender, being about twice length of 

 preuterus. Maggots slender. Abdomen of fly elongate, sub- 

 cylindrical ; facial plate long, wide, not constricted by vibrissal 

 angles, cut off abruptly below; antennae elongate, arista plum- 

 ose. These characters apply to the above form, TD 3999. 

 Ophirodexia and allies, including probably Pseudodexia, Lep- 

 toda, Cordyligaster, and a host of others. Atrophopoda may 

 come here, or may be very distinct. 



23. Ocypterine series — Probably a distinct series comes 

 here for Ocyptera and allies. The genus has been dissected, 

 but not with sufficient care. The eggs are elongate, stout, 

 subcylindrical ; maggot unknown to me. 



24. Thryptoceratine series — Probably a series comes 

 here for Thryptocera and allies. Eggs slender, elongate. 

 Maggot not known to me. 



25. Hemimasiceratine series — Uterus present, doubtless 

 coiled, containing elongate white maggots which must be 

 deposited on host. Hemimasicera, Sisyropa and allies. These 



