PHASIA. 



c. Abdomen globose. GYMNOSOMA. 

 c c. Abdomen not globose. 



d. Proboscis long, geniculated. BUCENTES. 

 d d. Proboscis not geniculated. 

 e. Head tumid. GONIA. 

 e e. Head not tumid. TA CHINA. 



Genus I. PHASIA. 



PHASIA, Latr. G. C. (1809) ; Coq.; Meig. Zw. iv. ; Wied.; Curt. ; ZeU. 

 Conops p., L. Syrpkus p., F. ; Boss. Musca p., Gmel. ; Pz. ; Lam. ; 

 Hbst. Thereva p., F. ; Pz. RUzomyzides, Fal. ; Zett. I. L. Pha- 

 sianea, Desv.; Mcq. ; Meig. Zw. vii. ; Westw. Phasiarea, Zett. D. S. 

 Phasidce, Bigot. 



Corpus latum. Alse latse. Abdomen depressum. 



Body and wings broad. Eyes bare. Abdomen depressed. 



The species may be grouped in accordance with the variations 

 of the prsebrachial vein. 

 a. Prabrachial vein joining the cubital vein before its tip. 



b. Prsebrachial vein very oblique between its flexure and the cubital 

 vein, which it joins near the tip of the latter. Pkasia, Desv. ; 

 Mcq.; Westw. Alophora, Meig. Zw. vii. Species 1. 

 b b. Prasbrachial vein hardly oblique between its flexure and its junc- 

 tion with the cubital, which junction is remote from the tip of the 

 latter. Hyalomyia, Desv. ; Mcq. ; Westw. Species 2, 3. 

 a a. (British?) Praabrachial vein joining the tip of the cubital. 

 Momyia, Desv. ; Mcq. ; Westw. Ananta, Meig. 



1. subcoleoptrata, L. S. N. 11. 1006. 13 (1763); F.; Gmel.; 

 Meig.; Fal.; Latr.; Pz. Fn. Ixxiv. 13, 14; Mcq.; Desv.; Zett. 

 hemiptera, F. ; Latr. ; Meig. ; Mcq. ; Desv. ; Zett. affinis, F. ; Pz. 

 tristis, Hbst.; Schell. ; Scha3f. Ic. pi. 71. f. 6. Nigra, capite antice 

 argenteo, palpis albis, alis subcinereis fceminse fusco variis, thoracis 

 abdominisque lateribus fulvis. Long. 4-5; alar. 8-12 lin. 



Black. Head white. Face, facialia, and epistoma testaceous. Fa- 

 cialia bristly along three-fourths of the length. Palpi white. Antenna 

 not half so long as the face ; third joint subelliptical, very much longer 

 than the second ; sixth minutely pubescent, near thrice the length of 

 the third. Thorax tawny. Wings grey ; costal vein ending at the tip 

 of the wing ; subcostal vein ending at much beyond one-third of the 

 length ; mediastinal vein ending at two-thirds of the length ; radial 

 vein ending at about nine-tenths of the length ; cubital vein ending at 

 the tip ; pra3brachial vein forming a gentle curve at its flexure, joining 

 the cubital at some distance from the tip of the latter ; discal transverse 

 vein curved inward in the middle, parted from the border by hardly 



