106 TJ. S. NATIONAL MUSEUM BULLETIN 216 



antennal process, side of face, small spot on under side of scape, 

 apicolateral corner of scutellum, subbasal stripe on front of middle 

 tibia, front of second trochanter of hind leg, basal 0.7 of hind femur in 

 front, apical 0.5 of first tergite, and apical 0.35 of second tergite (inter- 

 rupted in the middle), white; flagellum tinged with brown beneath; 

 wings infuscate. Described from the type of M. basalis (®f which the 

 front legs are missing). 



The type of Metopius medianus, in London, was studied briefly 

 but without the benefit of comparison material. It is close to M. 

 basalis basalis but not certainly the same. 



Specimen: 9 (type of basalis), Florida (Philadelphia). 



6. Subgenus Ceratopius 



Figure 169,b 



Ceratopius Clement, 1930, Konowia, vol. 8, p. 408. Type: Metopius dissectorius 

 Panzer; original designation. 



Facial shield escutcheon-shaped but rounded below, without a 

 distinct basal point, its dorsal edge straight or weakly arcuate, its 

 disc without a longitudinal carina; interantennal process narrowly 

 triangular, its sides slightly raised, connected dorsally by a low 

 ridge with a prominent acute horn in middle of frons ; margin of clypeus 

 broad and almost straight, not reflexed, close to base of labrum; man- 

 dible narrow, with two teeth, the lower tooth small and impressed; 

 maxilla and labium short; temple weakly rounded; occipital carina 

 rather close to foramen magnum, complete; prepectal carina turned 

 sharply forward just above sternaulus almost to reach front edge of 

 mesopleurum, then paralleling front edge of mesopleurum dorsad to 

 near sub tegular ridge; second recurrent vein with one bulla or rarely 

 with two closely spaced bullae; hind femur about three times as long 

 as deep; tarsal claws apparently simple; first tergite in profile sharply 

 pyramidal, its dorsal face straight and somewhat elevated anteriorly, 

 where it meets the flat dorsobasal face at an angle; male clasper 

 depressed, with a lateral ridge. 



This subgenus is predominantly Palaearctic. It does not occur in 

 the New World. Clement (1930, Konowia, vol. 8, p. 408-430) de- 

 scribes eight Palaearctic species and one from Formosa. Additional 

 representatives of the subgenus are: Metopius (Ceratopius) metallicus 

 Michener, 1941, from China; Metopius baibarensis Uchida, 1930, from 

 Formosa; Metopius dissectorius trijasciatus Uchida, 1930, from Japan 

 and Korea (=Metopius dissectorius imperfectus Uchida, 1930, new 

 synonymy); Metopius dissectorius pieli Uchida, 1940, from China; 

 and Metopius lar Morley, 1912, from Sikkim. Metopius lar is a sub- 

 species of Metopius dissectorius (new status). 



