LIST OF DIPTERA. 079 



Group 10. Antipheisson. 



Corpus mediocre, cinerascens, aut cinereo flavescens. Mystax 

 pilosus, albus, pilis paucis nigris. Abdomen nudum ; incisure setis 

 nullis. Pedes strigati. Alae limpidae, apice paullo obscuriores. 

 Mas. — Sexualia parva, simplicia, nigro-fusca aut rufescentia. Fcem. 

 — Abdomen fere planum, acuminatum. Oviductus couicus, breviter 

 hirtus, longitudine mediocri. 



Amiphrisson, Loew, Linn. Ent. iv. 123. 



Grayish or grayish yellow species, of moderate size, like those 

 of the preceding group in colour. Mystax white with fine hairs, 

 and with a few black hairs by the epistoma. In a scarce variety of 

 A. trifarius the highest hairs are black. Abdomen bare ; the inci- 

 sures with no bristles. Legs with dark and pale stripes ; the ground- 

 colour quite apparent through the light covering of hairs. Wings 

 limpid, very slightly darker at the tips. Male.— Sexualia small, 

 simple, blackish brown, or brownish red, or paler. Fern. — Abdomen 

 acuminated, nearly flat. Oviduct conical, of moderate length, with 

 short hairs. 



63. ASILUS ADPRE3SUS. 



Thorax pilis minutis albis adpressis vestitus. 

 Asilus adpressus, Loew, Linn. Ent. iv. 125, 63. 

 Meander, Asia Minor. 



64. Asilus angustifrons. 

 Fades angusta. 

 Asilus angustifrons, Loew, Linn. Ent. iv. 126, 64. 

 Meander, Asia Minor. 



65. Asilus trifarius. 

 Facies lata, thorax pilis nigris. 

 Asilus trifarius, Loew, Linn. Ent. iv. 128, 65. 

 Sicily. Isles of Greece. Asia Minor. 



Group 11. Asilus. 

 Corpus magnum aut maximum, coloribus intensis. Mystax 

 densus, lulvus aut ferrugineus, unicolor. Proboscis longus, acumi- 

 natus. Antennas hasi breviter pilosae. Thorax planiusculus, bre- 

 viter hirtus, setis abbreviatis posticis. Abdomen nudum; incisure 



3 n 3 



