BY ARTHUR WHITE. 95 



Neoitamus divaeicatus, Sp. nor. 



Thorax black, with shoulders and sides white ; scutel- 

 lum with four black marginal bristles; abdomen black, 

 with hindmargins of at least the second and third seg- 

 ments white ; femora black ; tibiiie with basal two-thiras 

 brownish-yellow or bright yellow, remainder black or 

 brown ; bristles of legs entirely black ; wings brownish or 

 hyaline. 



Length. Male, 11.5 mm; female, 10.5 mm. 



Hah. Roseville, Sydney, N.S.W. 



Male. Face black, with a large grey tubercle, the 

 ]a1ter bearing a bushy black and white moustache, the 

 black predominating. Antenna; and front black, the 

 latter bearing black hairs. Thorax black, with shoulders 

 and sides white, and an indistinct double black median 

 stripe; thoracic bristles entirely black; scutellum black, 

 with four long black marginal bristles, as well as black 

 hairs. Abdomen black, with hindmargins of segments 

 white, those of the second and thix'd segments being most 

 distinct, the whole bearing white lateral pubescence, but 

 without bristles. Femora entirely black, with white 

 pubescence, few black apical bristles above, and a few very 

 .short black bristles below; tibia; with basal two-thirds 

 brownish yellow, apical third and tarsi black ; both 

 tibiae and tarsi with black bristles. Wings brownish, the 

 second posterior cell not contracted. 



Female resembles the male, but the moustache xs 

 composed almost equally of black and of white hairs; lue 

 basal twc-thirds of tibiiB are bright vellow, and the wings 

 are hvalinc ; ovipositor considerably lengthened. 



This species may be readily recognised by the four 

 scutellar bristles, which are black in both sexes, in con- 

 junction with the small size ; the only other Australian 

 species having four scutellar bristles is S. hynlipinnix, 

 which is a very much larger species, with the scutellar 

 bristles usually yellow. 



.y. (fivarirnfiiK has been taken at Ros<^ville, Sydney, 

 by Dr. Ferguson, to whom I am indebted for a specimen 

 of each sex. 



Rhabdotoitamus, Gen. nor. 



Small brownish species, having the ovipositor laterally 

 compressed, but not usually so elongated as in Xenifainiift ; 

 femora never wholly black, and usually striped longitudin- 

 ally, the upper surface being black, the lower surface red, 

 yellow, or light brown. 



Face with the lower part occupied by a tubercle of 

 moderate size, which bears a bushv moustache. Antennae 



