80 



>^A^,ji ^*, 1S24: Taehina. Pacliyophthalmuti uurifrons Towiiseiid, Trans. 



//X7 Auicr. Eiit. ISoc, Vol. XVIII, p. .{al; l^oveinber, 18'.)l: tioin a 



^ cotype specimen. Faehi/oplithtdmiis sp., anel ISpJiixapaia sp., 



Brauer and Bergenstamni in litt.) signatns Meig. 



Fourth segment of abdomen largely or wholly yellow, insect else- 

 where black; length, 5 to 9 mm, Titton,(la. ; Lake Worth, Fla.; 

 Waco, Tex.; Colorado, and Santa Cruz Mountains and Los 

 Angeles County, Cal. (Entomological News, Vol. Ill, j). 80; 

 rh,.tn„cty^^ April, 1892. Sarcomacronyclda unlca Townsend, Trans. Amer. 

 6?^^, Ent. Soc, Vol. XIX, p. 101 ; May, 1892. Sarcomacronychia sar- 

 copha(ioides Townsend, Canadian Entomologist, Vol. XXIV, 

 p. 165; July, 1892. Sareomaeronyeltia trypoxylonis Townsend, 

 Bulletin Ohio Agr. Exper. Station, Vol. I, Xo. 3, i). 1(15; April, 

 1893.) Jioridensis Town. 



Genus SENOTAINIA Macq. 



iSeHo/rtiMirt Maccinart, Diptcres Exotiques, Supplement I, ]>. 167; 1846. 



Jmnopun Brauor and 13ergciistamin, Zweif. Kais. Mas. Wieu, Vol. V, p. 360; 1891. 



Our species have three postsutural and two sternoplural macroch;e- 

 ta', two i)airs of orbital bristles in both sexes; thorax, scutellum, and 

 legs, black : 



1. Third joint of antennas black 2. 



Third joint of antennic yellow, last three segments of abdomen 



gray pollinose on the bases, that on the second and third pro- 

 longed to the hind end of the segments in the middle of the 

 dorsum, where it incloses a black triangle; sides of abdomen 

 sometimes partly yellow; length, 4 to 7 mm. Toronto, Canada; 

 New Hampshire; Si)riiigtield, Mass.; Maryland; Tifton, Ga. ; 



(/' I, p. 107; 1S40. Miltof/rammd cryfliroccra Thomson, Kougliga 

 '^ iyi^-xy*-^ }<!La. Sven. Fregatteu Eugenics Itesa, Diptera, p. 523; 1808. J\Iilto- 

 gramma fnlvicornis van der Wulj), Biol. Ceut.-Amer., Dii>tera, 

 Vol. 11, p. 89; March, 1890. MUtogrammaJiarieorn is Towni^rnd, 

 Trans. Amer. Ent. Soc, Vol. XVIII, p. 355; November, 1891. 

 Miltogramma similifi Townsend, loc. cit., p. 357. Miltogramma 

 kaiiticnsis Townsend, Canadian Entomologist, Vol. XXIV, i>. 08; 

 March, 1892. ^Miltogramiua. decina Town.send, Entomological 

 News, Vol. Ilifi). 81 ; April, 1892.) rnbrirautris Mac«i. 



2. Abdomen wholly l)lack 3. 



Abdomen yellow, base of the first segment, apex of the fourth, and 



the genitalia, black, bases of the last three segments white 

 pollinose, abdomen elsewhere shining, second segment destitute 

 of a marginal pair of macrochicta',; sides of front and the face 

 silvery white pollinose, antennas black; thorax gray pollinose, 



d^^e.'^^.'s^^^^v-n/-^ Georgiana, Pla. ; Lexington, Ky. ; northern Illinois; Las Cruccs, 

 i^ J, N. Mex,, and' southern California. (Dipteres P^xotifpies, Sui)p. 



/ njL oAiA^ce^ ,ky(rCi..<AiiM 



