MR. walker's catalogue OF DIPTEROUS INSECTS. 105 



Catalogue of the Dipterous Insects collected at Sarawak, Borneo, 

 by Mr. A. E. Wallace, with Descriptions of New Species. 

 By Erancis Walker, Esq., F.L.S. 



[Eeceived Sept. 15, 1856.] 



Fam. MTCETOPHILID^," Haliday. 



Gen. SciARA, Meigen. 



Div. A. a. Meig. vi. 305. 



1. SciABA LATICOENIS, n. s., mas et foem. Nigra, anteiinis validis, thorace 

 nitido. Mas. Alis subnigricantibus. Foem. Abdomine ferrugineo, alls 

 nigricantibus. 



Male and Female. Black. Antennre stout. Thorax sliiniiig. Male. Wings 

 slightly blackish. Female. Abdomen ferruginous. Wings blackish. 

 Length of the body 3-4 lines ; of the wings 5-6 Uncs. 



2. SciAEA SOLITA, n. s., foem. Nigra, antennis gracUibus, thorace abdomi- 

 nisque apice subnitidis, pedibus piceis, aHs subnigricantibus. 



Female. Black. AntennES slender. Thorax and tip of the abdomen slightly 

 shining. Legs piceous. Wings sUghtly blackish. Length of the body 

 \\ hue ; of the wings 3 Hnes. 



Fam. CECIDOMYZID^, Haliday. 



Gen. Cecidomtia, Latreille. 



3. Cecidomyia defebenda, n. s., foem. Fusca, capite nigro, thorace rufes- 

 cente, pedibus testaceis, alis albidis, venis halteribusque testaceis. 



Female. Brown. Head black. Thorax reddish. Legs testaceous. Wuigs 

 whitish, cQiated ; veins and halteres pale testaceous ; subcostal vem end- 

 ing at a little before the middle of the costa ; cubital vein enduig at the tip 

 of the wing ; liind branch of the anal vein straight, and proceeduig ob- 

 liquely to the hind border. Length of the body If line ; of the wings 

 34 lines. 



Earn. BIBIONID^, Haliday. 



Gen. Plecta, Hoffmansegg. 



4. Plecia dorsahs. Walk. See page 5. 



5. PiiECiA STJBVAEIANS, n. s., mas et foem. Atra. Mas. Thorace rufo, ahs 

 subnigricantibus. Foem. Thorace rufescente, ahs nigricantibus. 



Male and Female. Deep black. Male. Thorax bright red. Wings shghtly 

 blackish. Female. Thorax dull red. Wings blackish. Length of the body 

 14-2 lines ; of the wings 4^5 hnes. 



This species may be distinguished from P. dorsalls by its nan'ower wings. 



Earn. CULICID^, Haliday. 

 Gen. CuLEX, Linn. 



6. Cidcx fuscanus, Wied. Sec page 5. 



