44 INSECUTOR INSClTli^ MENSTRUUS 



Type, TD4125 (fly, dissection of uterus, etc., and maggots). 



Cotypes include TD4 121. This and type were dissected and the 

 species found to have a subtubular uterus with eggs and colored maggots 

 irregularly arranged. This indicates the Pyrrhosiinae. A form to be 

 classed as Andinomyia, but transitional between that genus and Vibris- 

 som^ia (TD4 1 1 7, TD4 1 24), has been dissected and found to have a 

 straplike uterus, thus indicating the Hystriciidae and the marked distinct- 

 ness between these forms and the present genus. 



Trichophoropsis nitens, new species. 



Length of body, 1 mm. ; of wing, 8 mm. Three males, Oroya, 

 12,250 feet, March 6 and 7, 1913, on short herbage. 



Differs from T. puna in head being silvery- white, occipital pile silvery ; 

 thoracic dorsum less silvery, more shining, the thoracic vittae indistinct, 

 the median pair namrower than the outer pair ; abdomen wholly shining 

 without pollen, hypopogium wholly black. Wings deeply and broadly 

 yellowish basally, involving the veins; tegulae deep fuscous-yellow to 

 more or less whitish. Sides of first to third abdominal segments reddish. 

 The head is slightly longer, the facial profile proportionately shorter, third 

 antennal joint greatly widened, cheek width less than half eye-height, 

 eyes descending lower. One specimen has four sternopleural and four 

 postsutural bristles. 



Gabanimyia, new genus. 



General characters of Paragymnomma and approaching in some re- 

 spects both Eusignosoma and Trichophora. Description is of both 

 sexes. Wings only faintly infuscate, subhyaline ; front tarsi of female not 

 at all dilated ; parafacials pilose, with one facio-orbital macrochaetae at 

 lower front border of eye ; epistoma only feebly produced ; second aris- 

 tal joint slightly to considerably elongate, about twice to fully three times 

 as long as wide or slightly more ; arista not pubescent, except microscop- 

 ically so ; abdomen much shorter than wings, not globose, but short, more 

 or less flexed or incurvate, strongly arched, narrow subovate to wider 

 shortened-ovate, with a globose-like convexity above, not densely setose, 

 without spinelike macrochaetae. Female with two proclinate orbital 

 bristles, frontal width at vertex about one and one-third eye-width, fron- 

 tal bristles in single row. Male without outer proclinate orbital bristles 

 but with frontal row double at least anteriorly, front at vertex about or a 

 little more than eye-width. Cheeks fully one-half eye-height in both 



