128 Annals Entomological Society of America [Vol. IV, 



The results so far secured in the present work indicate at 

 least 37 distinct series in the Muscoid flies (exclusive of Antho- 

 myiidae and Acalyptratae), based mainly on the characters 

 of the reproductive and accessory organs of the female fly, 

 the egg, first-stage maggot, and in some cases the facial plate 

 and other characters of the external anatomy of. the adult. 

 Undoubtedly further work will demonstrate the existence of 

 further series demanding recognition. Briefly the series so 

 far recognized may be tabulated as follows: 



1. Trichopodine series — Xanthomelanodes peruanus n. sp. 

 (Peru) dissected and drawn, TD 3983. No uterus, utero- 

 vagina short and broad, tubular glands short and thick, sper- 

 mathecal ducts very long and spermathecae attached in hood, 

 oviducts of moderate length and thickness, ten eggtubes in 

 each ovary in the above species, eggs flattened and pink-sal- 

 mon to flesh-brown in color when mature. The chorion of egg 

 is beautifully honey-comb reticulate. Xanthomelanodes and 

 allies. Trichopoda and allies, many of which have been 

 dissected, have same eggs and ovaries, and almost certainly the 

 same type of reproductive system. 



2. Rutiliine series — Rutilia sp. and Amphibolia sp. (Aus- 

 tralia) dissected, TD 1864, 1866. Uterus present, but its 

 character not yet known. Maggots long and slender, hairy 

 or furnished with hairs at anal end. Rutilia maggot has anal 

 hairs, Amphibolia maggot is thinly hairy on body. Rutilia, 

 Amphibolia and allies — Australian flies, most of rather large 

 size. These will probably need division into several series. 



3. Phasiine series — Uterus present, form not known. 

 Egg very elongate, slender, TD 480 (South Carolina), near 

 Alophora, has what seems a piercing larvipositor or ovipositor, 

 but curved in the opposite direction from that of Compsilura 

 and not so sharp apically. Phasia, Alophora, Hyalomyia and 

 allies, but these have yet to be studied. 



4. Graphogasterine series — Hyalomyodes sp. (South 

 Carolina) dissected, TD 481. Uterus present, eggs and 

 maggots slender. Hyalomyodes and allies, and probably 

 Anurogyna. 



5. Glossinine series — Functional uterus, whether uterus 

 proper or uterovagina, greatly enlarged to hold the maggot 

 until fully grown and ready to pupate, some special provision 

 being evidently present for the feeding of the maggot during 



