710 LIST OF DIPTEBA. 



A. Tibiae nigrse. 



a. Corpus submetallicum. - - chalcogaster, Wied. 



B. Corpus non metallicum. ... Abuntius, Walk. 



B. Tibia3 rufas, apice nigrae. 



a. AI33 flavescentes. ... - tibialis, Macq. 



b. Ala limpidae. - Noas, Walk 



C. Tibiae tarsique obscure fulva. - - Amazoenes, Walk. 



D. Pedes fusci. ------ Phseax, Walk. 



G. Mystax fiavescente albus. - Apbellas, Walk. 



H. Mystax albus. 



A. Femora subtus testacea. - albibarbis, Macq. 



B. Femora tota nigra. 



a. Abdomen fuscum, fasciis canis. - Androclea, Walk. 



b. Abdomen non fasciatum. ... Paron, Walk. 



Sub-group 1. 



Mas. Corpus angustum. Caput subtus densissime pilosum. 

 Facies convexa. Mystax densissime setosus, usque ad antennas 

 ascendens. Proboscis crassa, lanceolata. Thorax subcompressus, 

 carinatus. Abdomen thorace multo longius. Sexualia longa ; for- 

 ceps rectus, utrinque furcatus. Pedes validi, hirti, spinis crassis 

 breviusculis ; femora incrassata. 



Radial vein as usual. Cubital vein forked at two-thirds of its 

 length ; forks nearly straight. First externo-medial vein much 

 curved near its base; second straight; third formiug a slightly 

 acute angle with the praebrachial, joining the fourth rather far from 

 the border. Subanal joining the anal at some distance from the 

 border. 



Asilus chalcogaster, Wied. 



Sub-group 2. 



Cubital vein forked at a little before two-thirds of its length ; 

 forks nearly straight, diverging. First externo-medial vein curved 

 near the base; second straight; third very slightly curved, forming 

 a slightly obtuse angle with the praebrachial, joining the fourth not 

 far from the border. Subanal joining the anal near the border. 



Asilus Noas, Walk.; A. Isse, Walk.; A. Amazoenes, Walk.; A. 

 Apbellas, Walk. 



Sub-group 3. 



Cubital vein forked at a little beyond two-thirds of its length; 

 forks nearly straight. First and second externo-medial veins 



