626 LIST OF DIPTERA. 



A. Antennae nigrae. 



a. Thorax cinerascens, vittis fuscis. - - senilis, Wied. 



b. Thorax flavidus, vittis fuscis. - - flavidus, Wied. 



c. Thorax niger. ----- hyalipennis, Macq. 

 D. Thorax cinereus, nigro vittatus. 



a. Femora apice tibia?que fulva. - - parvus, Walk. 



b. Tibia? intus basi fulvae. - pumilus, Walk. 



B. Antennas fulvae, apice nigra. 



a. Pedes nigri. Sicyon, Walk. 



b. Pedes ferruginei. ..- - Stirai'con, Walk. 



Group 1. 



Mas. Corpus parvum. Caput subtus dense pilosum. Facies 

 valde convexa. Mystax dense setosus. Proboscis linearis. An- 

 tennarum articulus lus 2o plus duplo longior; 3us longiconicus ; 

 lo brevior ; arista 3o plus triplo longior. Thorax abdominis 

 dimidio longior, utrinque et postice setosus. Abdomen subcylin- 

 dricum, basi usque ad sexualia subattenuatum, alas superans. 

 Sexualia maxima; forceps brevis, latissimus. Pedes robusti, spi- 

 nosi, subtus pubescentes. 



Cubital vein forked at a little beyond half its length ; forks 

 nearly straight, diverging from each other at their tips ; fore fork 

 forming near its base an obtuse angle, which emits no branch ; first 

 and second externo-medial veins nearly straight ; third curved, 

 forming an obtuse angle with the prabrachial, joining the fourth 

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

 from the border. 



Erax culiciformis, Walk. 



Group 2. 



Fcem. Corpus parce hirtum. Caput subtus densissime pilosum. 

 Facies valde convexa. Mystax densissime setosus. Proboscis 

 lanceolata. Thoracis latera et scutellum parce setosa. Abdomen 

 alas longe superans, triente apicali stylata. Pedes validi, spiuosi, 

 pilosi. 



Cubital vein forked at beyond half its length; forks very 

 slightly undulating, most remote from each other about the middle 

 part ; fore fork forming at its base a slightly obtuse angle, which 

 emits a branch ; the latter is a little longer than the basal side of the 

 angle. First, second and third externo-medial veins nearly straight; 

 third forming a slightly obtuse angle with the praebrachial, joining 



