1914] . Muscoid and Anthomyioid Flies. 163 
The writer has worked out the female reproductive system 
and egg in Stomoxys, Muscina, Synthesiomyia, Leucomelina, 
Limnophora and Spilogaster, besides many nonconnectant 
muscoid genera. The first three agree with Musca and the 
Calliphorinae in egg characters, but the last three differ con- 
- siderably from them in these characters. Available data on 
the lines above specified are presented below. 
CHAETOTAXY AND PILOTAXY. 
Hypopleural bristles present in a more or less vertical row, 
pteropleural bristles present; when 3 sternopleural bristles 
present, their formula is either 2.0.1 or 1. 1. 1—All muscoid 
families except Muscide, Oestride, Cuterebride. 
Higher True hypopleural bristles present, pteropleural bristles absent 
Muscoidea but in their place hairs or pile; sternopleural bristles 2. 0. 1 or 
1.0.1—Bengaliine (Calliphorine). 
Macrochaete entirely absent; row of hypopleural hairs present 
homologous with true hypopleural bristles—Gastrophilus and 
Cobboldia. 
( ' 
True hypopleural bristles absent, hypopleural hairs and pile 
Typical 
absent; pteropleural bristles present, also often pteropleural 
Muscoidea 
hairs or pile; sternopleural bristles 1. 0. 2—Musca, Morellia 
and Glossina. 
Hypopleural hairs present, pteropleural hairs absent; sterno- 
pleurals 1. 0. 2 or 0.0.2—Synthesiomyia and Graphoymia. 
Hypopleural hairs and bristles both absent; pteropleural 
hairs, sometimes of a bristly nature, present; sternopleurals 
none, 0.0.1, 1.0.1, or 1.0.2-4—Haematobia, Hypodermodes, 
Connectant Mesembrina, Eumesembrina, Pyrellia, Orthellia. 
Muscoidea Hypopleural and pteropleural hairs present; sternopleurals 
‘ 0.0.1—Stomoxys. 
Neither hypopleural nor pteropleural hairs, pile or bristles 
present; sternopleurals normally only 3 and formula 1.0.2 
(abnormally 2.0.2)—Muscina, Myospila, Clinopera, Leuco- 
| melina, Gen. Indet., Limnophora, Aricia, Spilegaster. 

{Neither hypopleural nor pteropleural hairs; sternopleurals 3 or 
Anthomryicides more and rarely 1.0.2—Anthomyia, Fannia, Coenosia. 
PLEURAL ANATOMY 
The name squamopleura is hereby proposed for the inferior 
swollen lobe of the metapleura of authors, being the lower 
lobe of the lateral plate of postscutellum (Hewitt). The 
sclerite in question ts a part of the mesothorax. The term 
metapleura is thus misapplied here, since metapleura can have 
no place in mesothoracic terminology. The metathorax is 
represented in the Muscoidea by the metasternum, whose 
lateral wings are termed the hypopleure; and by the true 
metapleura which is situated behind the hypopleura, the 
metanotum being practically evanescent. 
