1920] Melander: Nearctic Tetanoceridce 319 



Renocera Hendel. 



Renocera Hendel, Verb. z. b. Ges. Wien, L. 333 (1900); Abb. z. b. Ges. Wien, II, 

 74 (1902). Cresson, 51. 



Two fronto-orbitals; mesonottim opaque, vittas distinct; cheeks nearly 

 equal to eye; no humeral, prescutellar or presutural bristles, 1 dorsocen- 

 tral ; front tarsi black 2 



One fronto-orbital; mesonotum subopaque, vittae faint; cheeks narrower; 

 base of tarsi light colored 3 



2. Third antennal joint quadrate, scarcely one-half longer than deep; 



uniformly ocbraceous; posterior crossvein infiexed. Mont.* 



quadrilineata, n. sp. 

 Third antennal joint broadly rounded, nearly twice as long as deep; 

 abdomen with brown median vitta; posterior crossvein nearly per- 

 pendicular to fourth vein. Me., B. C johnsoni Cresson 



3. Arista very densely plumose to tip; third antennal joint tapering to the 



rounded apex, slightly concave above. N. H., N. Y., Pa. (Sciomyza). 



longipes Loew 

 Arista loosely plumose or pubescent; third antennal joint rounded oblong ... 4 



4. Arista very short pubescent; cheeks one-third the eye-height; periorbital 



shining stripe undeveloped; femoral and abdominal bristles present. 



N. Y. {Chcetomacera hrevis Cresson, 58) brevis Cresson 



Arista short plumose; periorbital stripes shining; abdominal bristles 

 weak 5 



5. Apical 2 tarsal joints black; notum not vittate, sparsely pruinose medially; 



cheeks one-fourth the eye-height; anterior margin of front shining; 



femoral bristles weak. Me., N. H. (Cresson, 54) amanda Cresson 



Last tarsal joint black; notum quadrivittate, scarcely shining; cheeks one- 

 half the eye-height; anterior margin of front dull; femoral bristles 

 present. Wash. * cyathiformis, n. sp. 



Renocera cyathiformis new species. 



Male — Length, G mm. Ochraceous, frontal stripes, face, cheeks, 

 antenna, palpi, halteres and legs yellow. Interfrontal stripe narrow 

 and attenuated anteriorly, reaching the luteous opaque frontal margin, 

 orbital stripes golden pollinose, reaching half way down the front, 

 sides of front gently arching so as to constrict the front at the antennae 

 to two-thirds its width at the ocelli, anterior fronto-orbital vestigial; 

 second joint of antennas very short, bowl-shaped, much deeper than long, 

 with numerous fine setulas, third joint oblong oval, one-half longer than 

 deep, the arista black, with short and rather sparse hairs; cheeks half 

 the width of the circular eyes; palpi yellow. Thorax as in Tetanocera, 

 quadrivittate, dusted, scarcely shining, one humeral, two notopleural, 

 one presutural, one supra-alar, one intra-alar, two dorsocentral, one 

 prescutellar, four scutellar, no propleural or other pleural bristles, 

 stemopleurae alone sparsely hairy. Abdomen without strong bristles, 

 base of end-paramera of hypopygium thin and circular, terminal portion 

 short. Middle femora with one anterior bristle; hind femora with two 

 bristles above and about four below in the anterior row, in addition to 

 the many flexor setae, which are less pronounced than in species of 

 Tetanocera; last tarsal joint black. Wings with strong and uniform 

 yellow tinge, anterior veins yellow, posterior veins brown, costal region 

 not clouded, crossveins lightly infumatcd, posterior crossvein straight 



