Manchester Memoirs , Vol. xliii. ( 1 899), No. 3. 153 



the lateral keels oblique, sharp; the central partition 

 triangular. Median segment shining, impunctate ; the 

 central area pyriform; the keel bounding it broad and flat 

 at the base, sharp at the apex, where it is deeply hollowed ; 

 the lateral basal arese are large, wider than long, shallow ; 

 the apical deeper, shorter and narrowed obliquely on the 

 inner side, the bounding keel being curved; from its apex 

 two stout keels run obliquely, forming a somewhat trian- 

 gular area. Pro- and meso-pleurae smooth, shining; the 

 ■metapleurse also smooth ; the keel below the spiracles 

 sharp and narrow. Legs stout ; the hinder coxae and 

 femora suffused with fulvous ; the hinder tarsi rufous. 

 Areolet oblique; the recurrent nervure is received in the 

 apical fourth, about the distance of the length of its top. 

 Abdomen brownish; the base and apex of the petiole 

 broadly ; the apices of the second and third segments 

 broadly, and of the fourth and fifth narrowly, yellow ; the 

 petiole sharply carinated laterally to shortly beyond the 

 middle ; the base and the sides depressed obliquely beyond 

 the middle. 



: THERONIA NIGROBALTEATA, Sp. nov. 



Fulva, nigro-maculata ; alls hyalinis, apice fumatis; 

 stigniate testaceo. ? . 



Long. 10; terebra 3 mm. 



Comes near to T. areolata, but is smaller; has the 

 thorax and abdomen marked with black, and otherwise 

 may be known by the central area on the base of the 

 median segment being square and not hollowed. Antennae 

 stout, brownish, darker towards the apex, the scape paler. 

 Face punctured all over; fulvous, yellowish at the top; 

 the clypeus impunctate; the mandibular teeth black. 

 Mesonotum dark brown ; the sides and two lines down 

 the middle yellow; the scutellar depression, and a narrow 



