ERISTALIS. Mud Fly. 



E. tenax. Ss '"• ; bronze brown, witli yellow hair around 



chest ; two spots and one band on body ; wing clear. 

 E. flavipes. Y% in. ; black, and strongly yellow-haired ; no 



spots on body, but the first ring yellow hairy. 

 E. bastardi. y% in. ; black ; gray hairy ; four orange spots 



on body. 

 E. saxorut?i. Jo in- : shiny black ; body with steel blue 



bands and yellow rings ; wing blackish brown. 

 E. diviidiatus. J-2 in. ; metallic black, with gray hair ; body 



with yellow spots ; leg joints white. 



tra?isversits. j\ in. ; black ; chest yellow hairy ; body 



with yellow spots. 



c^netts. yj^ in. : bronze brown ; gray haired : marks 



indistinct. 

 E. {Mallota) posticatus. j\ in. ; chest yellow hairy ; body 



black ; yellow at first ring and thickened hind shanks. 

 E. cuprovittatiis. fs in ; bronze green ; chest with coppery 



stripes ; joints of shanks yellow. 

 E. chrysostoinus. 3/s in. ; chest black, with four yellow 



stripes ; body rusty yellow, with white double spots ; first 



ring black. 

 E. droits/. 3^ in. ; chest brown hairy ; body orange and 



black. 



(43) 



E. 

 E 



