448 R. OSTEN SACK EN 



Idia cervina n. sp. ^. Thorax yellowish-sericeous, densely 

 covered with black punctures, between which the metallic-gree- 

 nish ground color is shining through; abdomen black, opaque, 

 the last segment metallic green^ shining. Length 8-9 mm. 



Face and cheeks black, shining ; underside of head fulvous , 

 with fulvous pile ; antennae brown , third joint more reddish ; 

 arista reddish at the base. The prevailing color of the thoracic 

 dorsum and scutellum is brownish-yellow, produced by a dense 

 sericeousness , or rather pollen , of that color ; it is variegated 

 however by dense black punctures, between which the metallic 

 green ground-color of the thorax is faintly shining ; short, erect, 

 black hairs, visible from a side view only, cover the thorax. 

 Pleurae with a broad bright fulvous stripe above, clothed with 

 fulvous pile ; tegulae also fulvous ; pectus metallic blackish-green. • 

 Abdomen black, opaque above ; the sides and the fourth segment 

 metallic green, shining; venter also metallic green, with black 

 punctures, which extend to the sides. Femora black, tibiae red- 

 dish ; front tarsi black , first joint reddish ; the two posterior 

 pairs reddish-yellow, black at tip. Wings with a yellowish tinge 

 and a brown shadow at the apex , which is darkest near the 

 costa and fades away towards the hind margin. 



Hah. Amboina (Beccavi 1873); six male specimens. 



NB. This must be a common species and is probably descri- 

 bed before ; but I cannot identify it with any species of Idia. 



Idia xanthogaster Wied. Auss. Zw. II, 349 (Java). 



(?) Syn. Iclia australis Walk. List etc IV, 809 (Australia) id. J. Proc Lin. 

 Soc. Ill, 103 (Aru Isl-ds) and IV, 132 (Celebes). 



One c/, Amboina, 1873 {Beccavi) ; two other </ from Yule 

 Isl''. N. Guinea (L. M. B'Alhevtis). 



The color of the legs (described as black in Wied.) must be 

 variable, because the specimen from Amboina has the base of 

 the tibiae and tarsi brownish-yellow; in the two other speci- 

 mens they are nearly altogether black. I must have overlooked 

 Wiedemann's type in Vienna , because I find no notice about 

 it among my papers. The type of austvalis Wk. struck me as 



