1920] ^ Melander: Nearctic Tctauoccridcc '.\2\) 



short and thick, somewhat constricted at the middle and ajjicallx- 

 ohHquely truncate. Only apical joints of tarsi blackened, front femora 

 with about seven bristles above, middle femora \\\t\\ one anterior Vjristle, 

 hind femora with four or five bristles above and in male with a complete 

 row below, in female with two or three in front below proximal to the 

 row of about ten setae. Wings with yellowish tinge, the' apical half of 

 costal margin slightly infumated, crossveins slightly clouded, ]Josterior 

 crossvein sinuous. 



Thirty-seven specimens. Pullman and Mount Constitution, 

 Washington;* Worley, Idaho;* Stanford, California.* June to 

 September. The females are difficult to distinguish from large 

 and vittate specimens of T. vicina. Although somewhat 

 variable, the following characters will help: In oblusOibula 

 the small spur of the preapical pair on the hind tibiae is about 

 two-thirds, instead of less than one-half, the length of the larger; 

 the apical row of setae of the underside of the hind femora con- 

 tains about ten, instead of about eight, setae, proximal to which 

 are two or three or even four, instead of one or two, stout 

 bristles, while in the posterior inferior row of the hind femora 

 are three or rarely four relatively weak, instead of four relatively 

 strong, bristles; the middle stripe of the front is usually narrower, 

 typically about one-half, instead of two-thirds, as wide as long 

 and usually the sutural luteous band is somewhat wider. 



Tetanocera papillifera i ew sjecies. 



Male — Length, 9-10 mm. Uchraceous; resembling vicina. but 

 readily distinct in structure of hypopygium. Front quadrate, dull 

 luteous along the suture, interfrontal and parafrontal stripes shining, 

 the former one-eighth the width of front and interrupted by the trans- 

 verse luteous band; face greatly receding, silky white, the silvery 

 occipital spot with pale brown center; second and third antennal joints 

 subequal, the second joint exi^anding from the base and rather strongly 

 setulose, third joint one-half longer than deep, with evenly rounded 

 apex; arista black, with enlarged base, plumose with fine long and rather 

 sparse hairs. Mesonotum marked with six narrow brown vittae, the 

 central pair longest, but not attaining the neck. A notopleural light 

 brown stripe extending along the pale yellow plurie, melapljural cal- 

 losity light brown, sternoplcural setula: distinct. Abdomen subshining, 

 setulose, fifth tergite fringed with about twelve long apical l.)ristlcs, 

 laterally nearly straight and parallel-sided, transversely narrower than 

 the third or fourth tergites; hypopygium finely setulose, the terminal 

 jjortion bearing a strong mammiform ijai)illa on the right side at the 

 apex, foramen large, circular; double i)atches of black sjtulae of last 

 stcrnite dense. Legs entirely yellowish, wings nearly hyaline, cross- 

 veins infumated; iM_)Sterior crossvein slightly arched. 



