30 INSECUTOR INSCITLE MENSTRUUS 



with a thin silvery pollen, sometimes almost imperceptibly reddish on 

 sides. Legs black, femora silvery on outside. Wings clear, faintly or 

 hardly yellowish near costa ; tegulae white. 



Type, TD4069 (fly and dissection of uterus). 



Cotypes, TD4074 and the other specimens mentioned. 



The abdomens of all the females were slit and uterus removed. The 

 uterus is long and coiled, subtubular, not straplike, not slender, filled with 

 elongate whitish eggs arranged regularly in four or live rows ; there were 

 no maggots developed in any of the females. Chorion of egg is thin, 

 but shows net-reticulate. 



Tribe GYMNOMMINI 



Eurythiopsis, new genus. 



Runs to Brauer and Von Bergenstamm's section Erigone, but differs 

 in first abdominal segment not being unusually short, the parafacials being 

 pilose, epistoma only feebly prominent, no ocellar bristles, male abdomen 

 with four segments and genitalia not unusually large. The eyes are 

 densely pilose, and the front tarsi of female are very noticeably dilated. 

 Disced macrochaetae present on second and third abdominal segments. 

 First and second aristal joints are both elongate, about equail in length, 

 about four times as long as v^ade, the arista being geniculate. Second 

 antennal joint is only slightly elongate, third joint being about two and 

 one-half times as long as second in male and about two and one-fourth 

 times as long as second in female. Cheeks of femeJe are nearly one-half 

 eye-height; those of male are shorter, but over two-fifths eye-height. 

 Female front at vertex is more than greatest eye-width, that of male a 

 little less than or about equal to greatest eye-width. Proboscis about 

 one and one-fifth times head-height ; palpi elongate, subcylindrical, 

 widened and flattened on apical third. 



Three sternopleural bristles, three postsutural, three postacrostichal, two 

 preacrostichal bristles. Scutellum with two strong long pairs of marginal 

 macrochaetae placed at almost equal distances apart, a shorter third ma- 

 crochaetae between them on each side ; an erect median pair or some- 

 times three bristles close to hind margin, and two disczJ peiirs, none being 

 truly spinelike. Abdomen ovate, with ordinary macrochaetae ; a median 

 discal pair of macrochaetae on second and third segments, sometimes an 

 extra bristle or two with them ; second segment with a median marginal 

 pair and about two marginal at extreme sides ; third segment with mar- 

 ginal row, anal segment sparsely set with macrochaetae except narrow 



