770 



LIST OF DIPTERA. 



South America. 



A. Abdomen supra totum nigrum aut piceum. 



A. Thorax piceus. - niger, Wied. 



B. Thorax testaceus, nigro vittatus. - - Audouinii, Macq. 



C. Thorax nigricans, lateiibus testaceo lineatis. 



fuscipennis, Blanch 



B. Abdomen nigro-fuscum, basi luteum. - basalis, Walk. 



C. Abdomen incisuris aut fasciis pallidus. 



A. Alae flavidae, apice fuscans. - rubidus, Wied. 



B. Alas subhyalinae aut limpida. 



a. Pedes non fasciati. ... - bicolor, Macq. 



b. Pedes fasciati. 



a. Femora unifasciata. - ferrugineus, Walk. 



b. Femora et tibiae bifasciata. 



i. Thorax maculatus. - - gracillimus, Walk. 



ii. Thorax non maculatus. - • multicinctns, Walk. 



c. Femora et tibiae trifasciata. - - anuulipes, Walk. 



14. LEPTOGASTER NIGER. 



Picea ; fades alba ; metatarsi flavi ; femora postica fusco-flava, 

 basi albido-Jlava, apice nigro-fusca ; alee subfiavescentes. 



Leptogaster niger, Wied. Auss. Ziveifl. i. 533, 1. 



a. Para. From Mr. Bates' collection. 



b. Santarem. From Mr. Bates' collection. 



c. Tapayos. From Mr. Bates' collection. 



15. Leptogaster Audouinii. 



Mas. Testaceus, nitidus ; thorax nigro vittatus ; abdomen et 

 pedes nigra ; pedes postici elongati, tibiis basi metatarsisque 

 albidis ; aloe subfiavescentes, apice subcinerece. 



Gonypes Audouinii, Macq. Dipt. Exot. i. 2, 125, 2. 



a. South America. From Mr. Saunders' collection. 



16. LEPTOGASTEB BASALIS. 



Pallide luteus ; abdomen nigro-fuscum, basi luteum ; pedes postici 

 fusci, femorum fascia ante apicali basique luteis ; alee fusco- 

 violacac, apice hyalina. 



Male. Pale luteous. Abdomen blackish brown, very long and 

 slender ; first segment luteous, brown above towards the tip ; hind 



