148 NEW YORK STATi: MUSEUM 



ail irregular brown mark, composed principally of two median 

 vittae and a posterior arcuate fascia, most distim-t on the median' 

 segments, on the apical ones expanded so as to rover nearly the 

 entire dorsuin ; hairs of antennae mixed pale yellow and In-own, 

 their apices chiefly whitish, niesonotnm opaque, whiiish prninose; 

 in certain lights three dark yellow \ iliac arc visible; fi-ont tarsi 

 clothed with very short hairs, ihc Mrs I joint two-thirds as long 

 as the tihia; wings whiiish hyaline, almost wholly covered with 

 yellow hairs, humeral crossvein bordered \\iih brown, a broad 

 pale brownish fascia crosses the wing jnsl before Ihe small cross- 

 vein, and a second slightly broader one at apex of K,. cnbitus fork- 

 ing a short distance before the small crossvein; length > >.."i mm. 



Female, hill'ers from the male as follows: Abdomen with 

 dark yellow mottlings. destitute of brown markings, hairs of 

 antennae whitish, viliae of mesonolnin more distinct; length "> 

 nun. Kiverton X. -I. 



12. Ablabesmyia ornata .Meigen 



ts:;x Tany pus Mvij,'. Sy^t. r.,-<clir. It, 7:31 

 1804 Tany pus Scbiner. Fauna Austr. L':''.'Jo 

 1877 Tany pus V. d Wulp. Dipt. NYTl. p.304 



Male. 1'ale yellow: the antenna and its hairs of the male 

 pale brown. Thorax with three deeper \ello\\- stripes; the t\vo 

 lateral ones bounded anteriorly b\ a line brown or black line, 

 which is continued over the pleura to the base of the wing; nieta- 

 notuin brownish. Abdomen with slightly darkened incisures; the 

 last segments of the male brownish yellow; claspers yellowish, 

 quite stout. Legs whitish ; near the apex of the femur a brownish 

 ring; the tips of the tibiae slightly browned; fore metatarsus a 

 little shorter than the tibia; fore tarsi of the male slightly ciliate. 

 ITalteres white. Wings hairy, pale yellow, with two cross bands 

 and a dark spot at the anterior margin a short distance from the 

 tip; the crossveins blackish bordered; the venation as usual. 

 Length 5..") mm. 



Yar. a. female. Differs from the above in having the abdomen 

 with mottled dark brown irregular fascia on each segment. The 

 fore metatarsus about three-fourths as long as its tibia. 



Yin: 1). female. Differs from the typical form in having three 

 distinct, opaque, ferruginous thoracic stripes, huineri white, an- 

 terior margin of the dorsuin narrowly blackened ; no blackish 

 pleura! spots ; metanotium and sides of scutellum ferruginous or 

 brownish. Aibdomen brown, segments with paler posterior mar- 

 gins. The brown clouds on the wings so coalesce that the wings 

 may be described as having two wide, irregular cross bands, one 

 before the middle and one between the middle and the tip ; cross- 

 veins almost black. Several specimens, Itbaca. N". Y. 



