COLLECTED AT SINGAPORE AND MALACCA. O 



Burman Empire with the expanded continent of Asia, and south- 

 wards in close approximation with that archipelago of splendid 

 islands which run in a chain to the north coast of Australia, and 

 send off a branch northwards through the Philippine Islands to 

 the coast of China, touching there again the mainland of Asia. 

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

 ing the species of Diptera discovered in Borneo, the materials for 

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

 follow until Mr. Wallace'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-history point 

 of view, will open up a large amount of information, which, when 

 combined with the labours of other naturalists who have been 

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

 down some laws on the geographical distribution of the insects 

 belonging to the Order which forms the subject of the following 

 catalogue. The specimens collected at Singapore and Malacca 

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

 minating 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. 



William Wilson Saunders. 



14th January, 1856. « 



Earn. BIBIONID^E, Holiday. 

 Gen. Plecia, Hoffmansegg. 



1. Plecia dorsalis, n. s., mas et fcem. Atra, thorace rufo, alis nigrican- 

 tibus. 



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



Length of the body 2^-3^ lines ; of the wings 7-8 lines. 

 The totally red thorax of this species distinguishes it from P.fulvicollis, Wied., 

 and from P. ignicollis, Walk. 

 Singapore and Mount Ophir. 



Fam. CULICID^E, Haliday. 

 Gen. Culex, Linn. 



2. Culex splendens, Wied. Aass. Ztveifl. i. 3: 3. 

 Singapore. Inhabits also Java. 



3. Culex fuscanus, Wied. Auss. Zweifi. i. 6. 9. 

 Malacca. Inhabits also Hindostan. 



