COLLECTED AT SIXUAPORE AXB MALACCA. 5 



Biirman Empire with the expaudt d continent of Asia, and south- 

 wards in close approximation with that archipehigo of sjjlendid 

 islands Avhich run in a ch;tin to the north coast of Australia, and 

 send oif a branch northwards through the Philij^pine Islands to 

 the coast of China, touching there again the mainland of Asi;i. 

 The present catalogue will be followed very shortly by one detail- 

 ing the species of Dlptera discovered hi Borneo, the materials for 

 which are now nearly all in this country, and other catalogues will 

 follow until Mr. AVallace's discoveries in the Diptera are exhausted. 

 That Mr. Wallace will be able to -visit all the islands of the Indian 

 Archipelago is not to be expected ; but still, his plan of exploring 

 those which have been but little examined in a natural-historj- point 

 of view, wdll open up a large amount of infoi'mation, which, when 

 combined vdth the labours of other nati.iralists who have been 

 working in the same districts, will give sufficient facts for laying 

 down some laws on the geographical distribution of tlie insects 

 belonging to the Order wliich forms the subject of the following 

 catalogue. The specimens collected at Singapore and Malacca 

 were taken during the six months commencing with May and tei-- 

 mmating with October. Where the altitude of the locality above 

 the level of the sea of any species is known, this will be found 

 noted in the proper place. Figures will be given to illustrate new 

 genera or any very remarkable species. 



AViLLIAM WlLbO>- SaUNDEBS. 

 14tli January, 1856. 



Fam. BIBIONID.E, Ralidojj. 

 Gen. Plecia, JLoffmunserjy. 



1. Plecia doksalis, n. s., mas ct foem. Atra, thorace rufo, alls nigrican- 

 tibus. 



Male and female. Deep black. Thorax bright pale red. Wings blackish. 



Length of the body 2^-3 J- lines ; of the wuigs 7-8 hncs. 

 The totally red thorax of this species distinguishes it fi*om P.fulvicoUis, Wiod., 

 and from P. ignicollis, Walk. 

 Singapore and Mount Ophii-. 



Fam. CULICID.I^, Raliday. 

 Gren. CuLEX, Linn. 



2. Culex spleudens, TFied. Auss. Zweijl. i. 3. 3. 

 Singapore. Inhabits also Java. 



3. Cidex fuscanus, Wied. Auss. Zweijl. i. G. 9. 

 Malacca. Inhabits also Ilindoslau. 



