AUSTRO-MALAYAN DIPTERA 397 



chipelago does not seem to abound in species of Bibio , and 

 thus the two species may be easily recognisable. 



Dilophus n. sp. One 9, Java, 1875 (Beccavi). This is the first 

 Dilophus from the Malay Archipelago mentioned in print, as 

 far as I know. 



Plecia fulvicoilis (Fab.) Wied. Auss. Zw. I, 73 (Sumatra, Java). 

 Many specimens from Ternate and Celebes (Beccavi), Island 

 Yule, N. Guinea (L. M. D'Alhevtis). 



Syn. IPlecia clorsalis Walk. J. Pr. IJnn. Soc. I, 5 (Singapore). 



Plecia tergorata Rondani , Ann. Mus. Civ. etc. 1875 , VII., 

 462 (Borneo). 4</, I9; Tcibodas Ott, Java, Beccari, 1874, 



Resembles the preceding very much , but only the thoracic 

 dorsum , including scutellum , are reddish ; collare , pleurae , 

 pectus and metathorax are black ; root of the wings black. 



Plecia melanaspis Wied. Auss. Zw. I, 72 (Java); [Penthetvia 

 in Wied.]. 



One c/", two 9, Java, 1874 (Beccavi). 



Syn. Penthetria JTaponica Wied. Auss. Zw. II, 618 [Loew, Beri. Ent. 



Z. II, 106]. 

 IPentlietria ignicollis Walk. List etc. I, 116; Canton, Nepaul. 

 Crapitula Mlotsdiulskii Gimmerth. Bull, da Moscou, 1845, Eastern 



Siberia. 



Loew, 1. c, gives the latter synonymy as probable ; he says 

 that. Cvap. Motch. occurs in the greater part of Asia and also 

 in Europ. Russia. 



PJecia forcipata n. sp. — Eleven o^ ; Kaju Tanam,, Sumatra ; 

 Aug. and Sept. 1878 (Beccavi). 



Resembles P . fulvicoilis and tergovata, but is smaller (7-8 mm.) 

 and holds the middle between both in the coloration of the 

 thorax. Thoracic dorsum red, including the scutellum and meta- 

 notum ; pleurae and pectus black ; but a broad red stripe rea- 



