124 me. walker's catalogue of dipterous insects 



beyond the middle of the costa, and with a paler incomplete exterior band ; 

 yeins black, testaceous at the base. Halteres testaceous. Length of the 

 body 3 lines j of the wings 5 lines. 



G-en. CiTiBiENA, n. g. 



Mas. Corpus sublineare, pilosissimum. Caput thorace vix latius ; facies 

 plana. Oculi villosissimi. Antennce breves ; articuli l us et 2 US transyersi; 

 3 as conicus, longior et paulld latior ; arista nuda, basalis, articulo 3° dupl6 

 longior. Abdomen thorace multo longius. Pedes simphces, sat graciles. 

 Alee sat angustae j vena transversa exterior inter cubitalem et prasbrachia- 

 lem angulata, ramulum emittens. 



Male. Allied to Chrysochlamys. Body nearly linear, thickly pilose. Head 

 hardly broader than the thorax ; face flat. Proboscis short. Eyes very 

 pubescent. Antennae short ; 1st and 2nd joints transverse j 3rd conical, 

 longer and a little broader ; arista bare, seated on the base of the 3rd joint, 

 and about twice its length. Abdomen much longer than the thorax. Legs 

 simple, pubescent, rather slender. Wings rather narrow ; 1st externo- 

 medial vein curved ; transverse vein between it and the praebrachial nearly 

 straight and upright ; transverse vein between the cubital and the prae- 

 brachial forming an angle which emits a short stump ; fore side of the 

 angle straight ; hind side curved. 



105. Citibjena atjrata, n. s., mas. Cuprea aureo-pubescens, capite aurato, 

 oculis villosis, antennis pedibusque testaceis, thorace bivittato, femoribus 

 basi cupreis, posticis cupreis apice testaceis, alis sublimpidis apice sub- 

 cinereis, venis halteribusque testaceis. 



Male. Cupreous, thickly covered with gilded down. Head with gilded 

 tomentum in front. Antennae testaceous. Eyes very pubescent. Thorax 

 with two stripes of pale tomentum. Abdomen brighter than the thorax. 

 Legs testaceous ; anterior femora cupreous at the base ; hind femora cu- 

 preous, with testaceous tips. Wings nearly limpid, greyish towards the 

 tips ; veins testaceous, black towards the tips. Halteres testaceous. Length 

 of the body 4 lines ; of the wings 7 lines. 



Gren. Syrphus, Fair. 



106. Syrphus aegrotus, Fair. Syst. Antl. 243. 48. (Eristalis.) 

 Inhabits also Hindostan, Java, and China ? 



107. Syrphus alternans, Maca. Dipt. JExot. ii. 89. 7. 

 Inhabits also Hindostan. 



108. Syrphtts diveetens, n. s., fcem. Chalybaeus aeneo-varius, capite antico 

 antennis thoracis vittis duabus scutelloque testaceis, abdomine subluteo 

 fasciis tribus strigis sex obliquis vittaque brevi interrupta apicali nigris, 

 pedibus halteribusque testaceis, tibiis posticis fuscis, alis limpidis. 



Female. Chalybeous, partly aeneous. Head in front, antennae, a stripe on 

 each side of the thorax and scutellum testaceous. Abdomen pale luteous, 

 with three black bands on the hind borders of the segments ; a black basal 

 forked streak ; the two following segments with an oblique black streak on 

 each side, and an apical interrupted black streak. Legs testaceous ; hind 



