130 MUSCID.E. 



34. tetrastigma, Meig. Zw. v. 120. 66 (1826). Cano-tomentosa, 

 thorace nigro-quadrivittato, alls c'mereis, vents transversis. mfuscatis, ab- 

 doviine longi-ohconico cmereo-tomentoso nigro-quadrimaciilato, pedibus 

 fulvis, femoribus anticis et tarsis nigris. Long. 3|^-4 ; alar. 7-8 lin. 



Black, tcith hoary tomentum. Head white. Thorax with four blackish 

 stripes. TFincjs grey ; tran&verse veins clouded tcit/i brown ; cubital and 

 prsebracliial veins slightly diverging fronti the prajbrachial transverse 

 vein to tlie border ; discal transverse vein slightly oblique, a little curved 

 inward, parted by hardly its length from the pra3brachial transverse 

 vein, and by much less than its length from the border. Alute white. 

 Abdomen lony-obcomcal, witli cinereous tomentum^ a little longer and 

 narrower than the thorax ; second and third segments with two black 

 spots on each. Legs tawny ; tarsi and fore femora black. 



Not common. (E.) 



35. transiens, n. Obscure tomentosa, capite cano, alis fuscis, 

 abdomine nitente, pedibus obscure fulvis, tarsis nigris. Long. 2|^ ; alar. 

 5 lin. 



Black, with dark grey tomentum. Head hoary. Wings dark brown ; 

 cubital and prsebrachial veins slightly diverging from the prfebrachial 

 transverse vein to the border; discal transverse vein slightly oblique, 

 nearly straight, parted by nearly its length from the prtebrachial trans- 

 verse vein, and by a little more than half its length from the border. 

 Alulae grey. Abdomen shining, nearly elliptical, a little longer but not 

 broader than the thorax. Legs dark tawny, slender, with very few 

 bristles ; tarsi black. 



Not common. (E). 



36. quadrum, F. S. A. 297. 67 (1805); Meig.; Mcq. ; Zett.— 

 subpimcta, Fal. — dispar, Desv, Cinereo-tomentosa, thorace nigro- 

 quadrivittato, alis subcinereis, abdomine ovato nigro-quadrimaculato, 

 femoribus apice tibiisque rufis. Long. 2J-3 ; alar. 5-6 lin. 



Black, with pale cinereous tomentum. Head whitish. Thorax with 

 four blackish stripes. Wings greyish ; cubital and praebrachial veins 

 slightly diverging from the pra?brachial transverse vein to the border ; 

 discal transverse vein slightly oblique, very slightly undulating, parted 

 by a little more than its length from the pra^brachial transverse vein, 

 and by a little less than its length from the border. Alulae white. 

 Abdomen oval, as long and as broad as the thoi'ax ; second and third 

 segments with two black spots on each. Tibise and tips of the femora 

 red ; posterior femora red for one-foiu"th of the length from the tips. 



Common. (E. S. I.) 



37. impulsa, n. Pallide cinereo-tomentosa, thorace nigro-quadri- 

 vittato, alis subcinereis, venis transversis sat approximatis, abdomine longi- 

 ovato nigro-quadrimaculato, femoribus apice tibiisque rufis. Long. 3 ; 

 alar. 6 lin. 



Black, with pale cinereous tomentum. Head whitish. Thorax with 



