1914] Muscoid and Anthomyioid Flies. 165 
REPRODUCTIVE SYSTEM. 
Male with accessory glands always more or less developed, at 
Higher least their rudiments visible; female usually with a large 
Muscoidea number of ovarioles—All Muscoidea down to and including 
the Calliphorine, 
Male without accessory glands, with very long and curled ejacu- 
Typical latory duct whose head is developed into a very elongate 
Muscoidea vesicula seminalis; female without uterus, with many function- 
ing ovarioles—Musca, Muscina, Synthesiomyia. 
Same as preceding, but ejaculatory duct of male much shortened, 
not over 3 to 5 times as long as the vas deferens, with more 
than half of it functioning as vesicula seminalis—Morellia, 
Stomoxys, Haematobia*. 
Male without accessory glands; female with only one or two 
functioning ovarioles, one or two maggots or eggs developing 
at a time in the uterus—Glossina,* Dasyphora,* Mesembrina, 

Hylemyia.* 
Male without accessory glands; female with few ovarioles, 
Connectant depositing large eggs which hatch shortly into maggots omit- 
Muscoidea { ting the second stage and developing rapidly—Hypodermodes, 
Eumusca,* Myospila.* 
Male without accessory glands; female with few ovarioles, 
depositing a small number of large eggs—Orthellia, Grapho- 
myia,* Pyrellia.* 
Male without accessory glands, with very long vas deferens 
communis present and long vesicula seminalis; female with few 
ovarioles, depositing a small number of large eggs—Leucome- 
lina, Limnophora, Spilogaster*. 
Male without vas deferens communis or accessory glands, with 
very short ejaculatory duct—Gen. Indet. 
Male without vas deferens communis, with accessory glands, 
Anthomyioidea with bulbous vesicula seminalis at head of the very short 
ejaculatory duct—Fannia. 
The term vas deferens communis is here proposed for the 
slender tube present in some forms extending from the union 
of the two vasa deferentia to the beginning of the swollen 
and more or less elongate vesicula seminalis, and apparantly 
not to be interpreted as a part of the ejaculatory duct. It is 
short in certain Borboroidea (Paralimna sp. for example) and 
Syrphoidea (Volucella sp.), but very long in Leucomelina 
and Limnophora. It seems to be the homologue of the common 
oviduct of the female, notwithstanding Berlese’s homologies 
in his Gli Insetti (p. 841). 
*Some doubt exists as to whether the 9 starred genera agree with the male 
characters given. 
