LIST OF DIPTERA. 



715 



B. Alae flavescentes, apice fuscescentes. 



D. Mystax rufus. 



E. Mystax flavus aut flavescens. 



A. Pedes nigro-aenei, tibiis testaceis. 



B. Pedes badii. ------ 



C. Pedes ferruginei, femoribus nigro vittatus 



D. Pedes fulvi. 



F. Mystax albus aut albidus. 



A. Alae macula apicali fusca. - 



B. Alae non maculatae. 



a. Abdomen fusco maculatum. - 

 B. Abdomen non maculatum. 



a. Corpus flavidum. ... 



b. Corpus cinereum aut albidum. 



E. Pedes ex parte pallidi. 



i. Femora et tibiae apice nigra, 

 ii. Femora uigro vittata. 



F. Pedes cinerei. - - - - - 



G. Mystax- 



nigribarbis, Macq. 

 birtipes, Macq. 



flavo-pilosus, Macq. 



brunnipes, Fabr. 



Scaurus, Walk. 



dubius, Macq. 



acrobaptus, Wied. 



dorsiger, Wied. 



Osiris, Wied. 



bipartitus, Macq. 



femoralis, Wied. 



- Alastor, Walk. 



Tangeri, Boisd. 



Group I. 



Corpus magnum. Caput densissime pilosum. Facies valde 

 convexa. Mystax dense selosus. Proboscis lanceolata. Antenna- 

 rum arliculus lus 2o longior; 3us lanceolatus, lo et 2o conjunctim 

 aequalis ; arista valida, 3o multo brevior. Thorax et abdominis in- 

 cisure setis lateralibus albis. Abdomen subcylindricum, tborace 

 duplo longius. Pedes validi, hirti, albo spinosi. Mas. — Abdomen 

 sublineare. Sexualia parva, birta. Fccm. — Abdomen oblanceolatum, 

 apice compresso lam nitido. 



Cubital vein forked at very much beyond half its length; fore 

 fork almost straight; hind fork slightly undulating. First and 

 second externo-medial veins straight, excepting a very obtuse angle 

 near the base of the first; third slightly curved, forming a slightly 

 obtuse an«rle with the prasbrachial, joining the fourth far from the 

 border. Subanal joining the anal near the border. 



Asilus Scaurus, Walk. 



Group 2. 



Mas. Corpus mediocre, fere nudum. Caput subtus pilosum. 

 Facies fere plana. Mystax parce setosus. Proboscis sublinearis. 

 Anteuuaruin articulus lus 2o multo longior; 3us lanceolatus, lo vix 

 longior; arista sat valida, 3o vix brevior. Thorax setis paucis 



3 Q 3 



