1913] Melander — ^-1 Synopsis of the Sapromyzidae 81 



First and auxiliary veins brown only at costa, the base and middle of costa not 

 brown, wing also tipped with brown. Eur.*, N. H. (fig. 17) 

 arcuata Fallen. 



3. Front half of wing and posterior cross vein broadly brown 4 



Wings mostly hyaline, the submarginal cell clear except at tip. Alaska, Wash.* 



Id.*, Col.; Cal., Nev. Aldrich. (fig. 19) jucunda Loew. 



4. Head, thorax and abdomen largely cinereous-pruinose; brown pattern of wings 



sharply defined; abdominal segments setose; four rows of acrostichals. 



Mich. (figs. 16, 20) setosa sp. nov. 



Head, thorax and abdomen shining yellow; brown of wings diffusing into 

 hyaline portion 5 



5. Abdomen setulose, but with strong marginal bristles arising from black spots; 



acrostichals dense. N. J.*, Pa., Que., N. H.; Va., la. Aldrich. 



-. . . superba Loew. 



Abdomen with hind edges of the segments narrowly and the sides broadly 

 margined with black. Me similis Johnson. 



Palloptera setosa sp. nov. 



cf 9 • Length 3.5 mm. Pale cinereous in color covered especially on occiput 

 and mesonotum with whitish gray pruinosity ; anterior portion of front, face, cheeks, 

 scutellum, pleura?, abdomen, halteres, calypteres and legs becoming yellowish; base 

 of antennae and mouth-parts testaceous; outer portion of third antennal joint 

 infuscated. Arista dusky, pubescent. Four dorsocentrals, one of them presutural, 

 four rows of sparse delicate acrostichals. Abdominal setae arising from minute black 

 dots, rather robust, the marginal ones a little stronger; fifth abdominal segment 

 elongate. x\nterior half of wing, apex and broad cloud about posterior cross vein 

 infumated, a small clear costal spot just before the end of the auxiliary vein, the 

 brown surrounding the cross-veins more saturate, remainder of wings clear hyaline; 

 posterior cross-vein at right angles to the fifth vein; last section of fourth vein arched. 



Two males and one female collected by Professor Aldrich at 

 Battle Creek, Michigan. The female has a slender hyaline stripe 

 extending down the middle of much of the submarginal cell. 



Explanation of Plate 3. 



1. Poecilomyia (new genus of Sciomyzidae) decora Loew. 



2. Poecilomyia decora Loew. Front and face. 



3. Chwtococlia distznetissima Schiner. From Hendel. 



4. Procrita pectinata Hendel. Wing, from Hendel. 



5. Griphoneura imbuta Wiedemann. From Hendel. 



6. Physogenia vittata Macquart. Profile of head. 



7. Pachycerina omata, new species. Profile of head. 



8. Trigonomctopus rotundicornis Williston. Profile, from Williston. 



9. Campfoprosopella verticalis Loew. Profile of head. 



