122 MR. walkee's catalogue or dipteeous insects 



Male. Bright greenish -blue, slender. Face extremely narrow. Antenna; 

 black. Abdomen dark bluish-purple. Legs testaceous ; tibiae hardly 

 spinose ; hind femora black ; hmd tibise blackish, with testaceous tips. 

 Wings greyish, rather broad, brownish along the costa ; veins black ; 

 prsebrachial vein hardly curved, forming an almost imperceptible angle at 

 its jmiction with the discal transverse vein which is nearly straight. Hal- 

 teres testaceous. Length of the body If line ; of the wings 3^ lines. 



Gen. DiAPHOKFS, Meigen. 



92. DiAPHORUS DELEGATtJS, n. s., foem. Virichs albido-tomentosus, antennis 

 nigris, abdomine seneo-viridi basi testaceo, pedibus testaceis, tarsis uigris, 

 tibiis posticis fuscescentibus, ahs subcinereis venis nigris, halteribus tes- 

 taceis. 



Female. Green, with whitish tomentum. Proboscis and antennae black. 

 Abdomen aeneous-green, testaceous towards the base. Legs testaceous ; 

 tarsi black ; hind tibiae brownish. Wings greyish ; vems black ; prse- 

 brachial vein and discal transverse vein almost straight. Halteres tes- 

 taceous. Length of the body 2\ hnes ; of the wuigs 4 hues. 



Tarn. SYEPHIDJE, Leach. 



Geu. Ceria, Fahr. 



93. Ceria Javana, Wied. See page 17. 



Gren. Emstalis, Latr. 



94. Eristalis niger, Wied. See page 17. 



95. Eristahs arvorum, Fahr. Sjjst. Antl. 235. 14. 

 Inhabits also Java and Chhia. 



96. Eristalis Andrsemon, Walk. Cat. Dipt. pt. 3. 627. 

 Inhabits also Hindostan. 



Gren. Helophtlus, Meigen. 



97. Helopliilus insignis, Walk. See page 17. 



Gen. Meeodon, Fahr. 



98. Meeodon VAEICOIOB, n. 8., foem. Atra, antennis nigris, arista testacea, 

 thorace postico cinereo, scutello fidvo, abdomine basi fulvo segmentis 

 testaceo-fasciatis, pedibus nigris, ahs subcuiereis apud costam fuscis venis 

 nigi'is, halteribus testaceis. 



Female. Deep black. Head with hoary tomentum m front. Antennte black • 

 arista testaceous. Thorax cinereous towards the scutellimi, wliich is tawny. 

 Abdomen with testaceous bands ; base tawny. Legs black. Wings shghtly 

 greyish, mostly dark brown along the costa ; vems black. Halteres testa- 

 ceous. Length of the body 8 lines ; of the wings 12 hnes. 



Gen. Xtlota, Meigen. 



99. Xylota confonnis, Walk. See page 1.8. 



