248 



oscutelluui brouzy ; front and middle femora nearly black with very plight metallic" 

 lustre: trochanters and femero-tibial joints yellow; tips of all tibiie- yellow ; all tarsi 

 yellow ; mesoplenra brilliant metallic blue ; metapleura shining metallic green. 



Male.— hength, 0.8'»™, expanse of wings, 1.9™°', greatest width of forewings, O.Sot""' ; 

 difl'ers from female in its more somber color, the general effect being brown rather 

 than metallic although the mesonotum and head are somewhat lustrous; the anten- 

 Dse. are cylindrical, the segments well separated subcylindrical and furnished with 

 short, finely distributed hair. The general color of the legs is darker ; the bands at 

 the joints being narrow and darker; hind tarsi dusky, middle and front tarsi yellow 

 except last joint. 



Described from one male and one female reared from Siphonojyhora 

 avcnw by F. M. Webster, at Lafayette, lud. 



This species comes rather close to Encyrtus clavellatus Dalmau reared 

 iu Europe from Cecidomyid galls ou willow, but is specifically distinct. 



AN AUSTRALIAN HYMENOPTEROUS PARASITE OF THE FLUTED 



SCALE. 



By C. V. Riley. 



We have just received from Mr. F. S. Crawford, of Adelaide, the 

 first Hymenopterous parasite of Icerya yet found iu Australia. It is 



Fig. 5i.—0phelosia craivfordi, eul.arged (origiualy. 



a very interesting form belonging to a new genus, and as it will doubt- 

 less become an important factor in the life-chances of Icerya, and it will 

 be convenient to refer to it definitely by name, we take this occasion to 

 characterize it. Its nearest relative Is Dilopliogaster caUfornica How- 

 ard, which breeds rapidly in California and is a noted enemy of the 

 Black Scale {Lecanium olece). So valuable a species is this last that 

 Professor Corastock found that on some trees 75 per cent of the scales 

 were destroyed by it, while in no case was the scale found without its 

 attendant destroyer. Moreover, Mr. Coquillett writes us that iu 1889, 



