180 M. W. R. de V. GRAHAM 



lapsus. Both fore wings are missing, but the type is certainly the same as convexa 

 (Walker). 



Britain, Ireland, Sweden (Lapland), Iceland, Greenland ; very local, so 

 far found only in coastal areas. 



Biology. Unknown. Imagines July-Sept. 



KSENOPLATA Boucek 

 Ksenoplata Boucek, 1965 : 373-374- Type-species : K. quadrata Boucek, by original designation. 

 Two species known (for their distinguishing characters, see Boucek, 1965). 



Ksenoplata quadrata Boucek 



Ksenoplata quadrata Boucek, 1965 : 374-376, q* ?■ 



Holotype $. Slovakia : Banska Stiavnica, 19.vii.1959 {Boucek) and paratypes 

 in Narodni Museum, Prague (holotype, cat. no. 25.603). 



Czechoslovakia, Bulgaria. 

 Biology. Unknown. 



Ksenoplata medicaginis Boucek 



Ksenoplata medicaginis Boucek, 1965 : 376, §. 



Holotype $. Algeria : le Hamiz, near Alger (Y. de Luca), in the Identification 

 Centre of C.I.L.B., Geneva- Villereuse) . 



Algeria. 



Biology. Reared from Bruchidius bimaculatus 01. (Col., Chrysomelidae) on 

 Medicago lappacea (see Boucek, 1965). 



NODISOPLATA gen. n. 



Type-species : Lamprotatus diffmis Walker, 1874. 



(Derivation : a compound of the generic name Isoplata with the Greek vodoq, 

 toothless. Gender : feminine). 



Anterior margin of clypeus (Text-fig. 127) curved forwards, with a median tooth or tubercle, 

 usually also a smaller tubercle on either side (occasionally these are nearly obsolete). Both 

 mandibles with three teeth in the type-species (in viridipes not seen) . Antennae inserted slightly 

 above level of ventral edge of eyes, 11263 ; combined length of pedicellus and flagellum in 

 female less than, in male at most equal to, the breadth of the head ; flagellum in female clavate, 

 in male subclavate ; funicular segments in female not longer than broad, sensilla numerous but 

 in one row on each segment ; clava with a small area of micropilosity on third segment only. 



Thorax quite strongly arched dorsally. Pronotum without a collar. Mesoscutum and scutel- 

 lum convex, with very fine reticulation which is hardly raised above the general surface and, on 

 the disc of the scutellum, sometimes engraved. Notauli complete, deep. Scutellum nearly 

 ovate, its base very narrow because the scutello-axillar sutures converge strongly ; without, or 



