30 MR. P. CAMERON OB THE [May 7, 



[ICABIA 8ULCI8CUTI8, sp. U. 



Pallide Jlava, supra lute nigro-maculata ; pedibut palUdeJlavig, 

 tarsis nigris ; sculeHo sulcata ; ulis hydlinis, stigmaie nervisque 

 nigro-fuseis. $ . 



Long. 1 '■'> mm. 



Huh. Bukit Tomal), Singapore. 



Antennae deep black, stout ; the joints of the flagellum clearly 

 separated. Head pale yellow ; brownish black are the front, ex- 

 cept the orbits of the ocelli and a mark above the antenna?, the 

 outer orbits broadly, and the clvpeus, except for a black line down 

 its middle on the basal two-thirds, the line becoming wider towards 

 the apex. The black mark on the front is dilated outwardly on 

 the lower edges ; there is a narrow but distinct furrow extending 

 from the ocelli to the antennae ; on the black mark between the 

 antennae are two small yellow marks. The apex of the clypeus is 

 acutely pointed in the middle. Mandibles pallid yellow, except 

 that the teeth are black. The prothorax is black, except the hinder 

 edges narrow ly, the upper edges and a broader, more irregular line 

 before the middle. The scutellum is broadly farrowed down the 

 middle ; it is yellow, except, the middle, narrowly behind, and a lari^e 

 triangular mark behind. The median segment is edged with brown 

 behind and more narrowly down the centre ; this central line is 

 much narrowed on the top. The basal line extends obliquely to 

 the spiracles ; the pleural furrows are clearly defined ; the furrow on 

 the centre of the median segment is keeled. The middle femora 

 are brownish on the basal two-thirds above ; the hinder are 

 entirely black, as are also the four hinder tarsi and the apices of 

 the four hinder tibia?. The petiole is brown, its apex and sides 

 pallid yellow ; the other segments are brownish, with the apices 

 and the ventral surface pallid yellow.] 



El MENDS CIRCINALIS Fab. 



Hah. Patalung, Singora, Malay Peninsula. 



The three examples are very dark-coloured, and all differ from 

 each other in coloration. 



[Odynerus mephitis, sp. n. 



Niger, fluvo-muculutus ; abdominis basi rufaj pedibus Jlavis, 

 femoribus rufis, tibiis posticis nigris ; alls hyalinis, stigmate 

 fusco. 2 • 



Long. mm. 



Huh. Ceylon. 



Belongs to the section without a suture on the petiole, and 

 comes close to 0. miniatus and 0. dijjinis. 



Scape of antennae bright yellow below ; the base of the flagellum 

 rufous. Head closely and uniformly punctured; black; the oblique 

 sides of the clvpeus, a mark above the antennae, roundly dilated on 

 either side below the middle, the lateral, the upper, and lower 

 portions being not clearly separated, the end of the eye-incisions, 



