286 LIST OF DIPTERA. 



Female. Black. Head tawny ; vertex piceous. Palpi testa- 

 ceous. Antennae ferruginous, tawny at the base, black towards the 

 tips. Hind borders of the abdominal segments testaceous. Legs I 

 tawny ; tarsi brown. Wings very slightly gray, dark brown along 

 the fore border and with a very broad dark brown band which is 

 furcate towards the hind border ; first branch of the cubital vein 

 simple, slightly curved and not angular near the base ; subanal vein 

 joining the anal on the border. Length of the body 2f lines; of 

 the wings 6 lines. 



a. Para. From Mr. Bates' collection. 



41. Chrysops leucospilus. 



Niger ; antennce jiavce apice fuscce ; abdomen basi utrinque ma- 

 cula magna, medio quatuor trigonis albis ; alee hyalinee, basi 

 costa fasciaque nigris. 



Chrysops leucospilus, Wied. Auss. Zweifl. i. 202, 12. 

 Brazil. 



42. Chrysops guttula. 



Niger ; abdomen macula utrinque baseos trigona, guttisque tribus 

 albis ; pedes fusci ; alee limpidee, costa fasciaque nigro-fuscis . 



Chrysops guttula, Wied. Auss. Zweifl. i. 203, 13. 

 Brazil. 



43. Chrysops lateralis. 



Niger ; antennce flavce, apice fuscce ; thorax albido bivittatus ; ab- 

 domen incisuris, maculis mediis trigonis et utrinque maxima 

 laterali fiavis ; alee limpidce, costa fasciaque fuscis . 



Chrysops lateralis, Wied. 

 South America. 



44. Chrysops l^tus. 



Niger; caput flavum ; antennce flavce, apice nigrce ; thorax flavo 

 quadrivittatus ; abdomen vitta maculari incisurisque fiavis ; 

 alee hyalince, basi costa, fasciaque fuscis. 



