1911] . Study of Muscoid Flics 129 



its three stages. A most remarkable and distinct type, in any 

 event, not only in its reproductive system and habit, but also 

 in its venation and other characters. Glossina and allies — 

 African blood-sucking flies, carriers of Trypanosomae of var- 

 ious forms of sleeping sickness in man and animals. 



6. Stomoxydine series — Stomoxys calcitrans (Peru) dis- 

 sected and drawn, TD 3985. No uterus, uterovagina short, 

 spermathecal ducts long and doubled, tubular glands fairly 

 well developed but not longer than oviduct plus common ovi- 

 duct. Eggs elongate and deposited on dung. Adult with 

 piercing mouthparts in both sexes. Ovipositor with a dorsal 

 pair of bristly, slightly curved, subeylindrical chitinous processes. 

 Stomoxys, and probably Lyperosia, Haematobia and allies — 

 blood-sucking flies and probable carriers of microzoa of certain 

 cattle diseases. 



7. Calliphorine series — Compsomyia macellaria (Peru) 

 dissected and drawn, TD 3984. No uterus, uterovagina very 

 short; spermathecal ducts very short, only as long as the sper- 

 mathecae themselves; tubular glands only very moderately 

 developed, about as long as common oviduct plus oviduct, the 

 latter hardly half the length of the former. Ovipositor simple. 

 Mouthparts fleshy. Eggs elongate, deposited in sores or on 

 meat, the product of both ovaries being deposited at one time. 

 Compsomyia and allies, and probably Calliphora, Lucilia and 

 allies. 



8. Mesembrinine series — Probably a distinct series comes 

 here, including Mesembrina and allies, and especially Dr. 

 Adolf Lutz's strange Brazilian fly which Prof. Hermann deter- 

 mines to be Pseudogametes, and which seems to have Mesem- 

 brinine affinities. 



9. Muscine series — Musca domestica (Peru) dissected 

 and drawn, TD 3982. No uterus, uterovagina elongate; a 

 pair of uterovaginal pouches springing from lateral anterior 

 walls, one on each side below insertion of spermathecal and 

 tubular gland ducts, being accessory copulatory vesicles of 

 Hewitt; tubular glands long and slender; eggs elongate, depos- 

 ited on dung, etc. Musca and allies. 



10. Sarcophagine series — Sarcophaga 2 spp. (Peru) dis- 

 sected and drawn. Uterus, when distended, heart-shaped or 

 cordate, maggots rather irregularly disposed therein. Utero- 

 vagina short, but with two dorsally-lying sacs or large pouches 



