WAIGHOU, MTSOL, AND NOETH CEEAM. 205 



the base. Legs pale yellow ; femora mostly black ; hind tibiae mostly 

 piceous. Wings cinereous, clouded with brown along the exterior 

 part of the costa ; veins black, tawny at the base ; halteres pure white. 

 Length of the body 3 lines ; of the wings 6 lines. 



Geu. MiTSAMA, n. g. 



Foem. Co?'/ji/s breve, latum. Cf</JH/ thoracenonlatius. AntentKehreves, 

 subfusiformes, valde compactae ; arista longa, filiformis. Thorax con- 

 vexus ; scutellum subascendens, bispinosum. Abdomen subdepressum, 

 thorace brevius et multo latins. Pedes inermes. Alee mediocres. 



Female. Body short, broad. Head as broad as the thorax. Antenna;, 

 including the arista, rather more than half the breadth of the head j 

 scape short; flagellum subfusiform, with very short and compact 

 joints ; arista filiform, much longer than the flagellum. Thorax con- 

 vex ; scutellum prominent, slightly ascending, armed with two apical 

 spines. Abdomen rather flat, shorter and much broader than the 

 thorax. Legs unarmed. Wings with the veins much like those of 

 Oxycera in structure ; discal areolet large. 



13. MusAMA PAUPERA, n. s. F(£m. Nigra, subnitens, antennis fulvis, 

 arista alba, pedibus piceis, tarsis posterioribus albidis apice nigricanti- 

 bus, alis cinereis, halteribus piceis. 



Female. Black, short, broad, slightly shining. Antennae tawny ; arista 

 white. Legs piceous; posterior tarsi whitish, with blackish tips. 

 Wings cinereous ; veins and halteres piceous. Length of the body 

 2 lines ; of the wings 4 lines. 



Gen. Saegfs, Fair. 



14. Sargus quadrifasciatus, H^aZA-. SeeVol. V. p. 146. 



Fam. TABANID^, Leach 



Gen. Tabanus, Linn. 



15. Tabanus exagens, n. s. Mas. Piceus, cinereo tomeutosiis, capite 

 subtus pectoreque canis, antennis nigris cornu parvo acuto, thorace 

 vittis quatuor canis, abdomine maculis trigonis et segmentorum mar- 

 ginibus canis, alis obscure cinereis. 



Male. Piceous, with cinereous tomentum. Head beneath and pectus 

 hoary. Eyes composed of very small facets. Antennae black, with 

 a small but acute horn ; flagellum acute, curved, rather long. Thorax 

 with four slight hoary stripes. Abdomen vA'ith a triangular hoary spot 

 on each segment, whose hind border is also hoary. Wings dark cine- 

 reous ; veins black ; fore branch of the cubital vein rectangular near 

 the base, where it rejects a short branch. Length of the body 7 lines ; 

 of the wings 14 lines. 



