12-1 MR. walker's catalogue or DIPTEROUS INSECTS 



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

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

 body 3 lines ; of the wmgs 5 hues. 



GreU. ClTIB^NA, n. g. 



Mas. Corpus subhneare, pilosissimum. Caput thorace vix latins ; facies 

 plana. OcuU vUlosissirai. Anteunce breves ; articuli l"** et 2"' trausversi; 

 3"^ conicus, longior et paullo latior ; arista nnda, basahs, articulo 3° dupl5 

 longior. Abdomen thorace mult5 longius. Pedes simphces, sat gracUes. 

 AI(e sat angustee ; vena transversa exterior inter cubitalem et prsebrachia- 

 lem angulata, ramulum emittens. 



Male. Allied to Chrysochlamifs. Body nearly hnear, thickly pilose. Head 

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

 pubescent. Antennae short ; 1st and 2nd joints transverse ; 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 

 sunple, pubescent, ratlier slender. Wings rather narrow ; 1st extemo- 

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

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

 brachial formuig an angle wluch emits a short stump ; fore side of the 

 angle straight ; liind side cm-ved. 



105. CiTiB^NA ATJRATA, n. 8., mas. Cuprea aureo-pubescens, capita aurato, 

 oculis villosis, antennis pedibusque testaceis, thorace bivittato, femoribus 

 basi cupreis, posticis cupreis apice testaceis, ahs subhmpidis apice sub- 

 cinereis, venis halteribusque testaceis. 



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

 tomentum ui front. Antennae testaceous. Eyes very pvibescent. 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. 



Gen. Syrphus, Fabr. 



106. Syrphus segi-otus, Fabr. St/st. Antl. 243. 48. (Eristalis.) 

 Inhabits also Hindostan, Java, and Chuia ? 



107. Syrphus altemans, Maeq. Dipt. Exot. n. 89. 7. 

 Inhabits also Hindostan. 



108. Syephus diteetens, n. s., fcem. Chalybseus seneo-varius, capite antico 

 antennis thoracis vittis duabus scutelloque testaceis, abdonune subluteo 

 fasciis tribus strigis sex obUquis vittaque brevi interrupt a apicaH nigris, 

 pedibus halteribusque testaceis, tibiis posticis fascis, alls limpichs. 



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 foUowmg segments with an oblique black streak on 

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



