2IO P. CAMERON. HYMENOPTERA. 



pallid yellow, the antennal scape yellow, black above, the flagellum black, the basai joints 

 brownish below, the hind tarsi black; wings hyaline, the apex smoky, the stigma and nervures 

 black; the areolet oblique, sessile, the basai nervure thickened, more so in front than it is 

 behind, the récurrent nervure received shortly beyond the middle, the récurrent nervure is 

 roundly angled outwardly above the middle. Metanotum smooth, the areola of equal width, 

 about one quarter longer than wide ; the latéral area separated, a little narrowed towards 

 the apex. Q. 



Length n m. m.; terebra 3 m. m. 



Parapsidal furrows narrow, but distinct on the basai half. Apex of i st abdominal segment 

 depressed, clearly separated, the basai part depressed in the middle, the dépression becoming 

 gradually widened towards the apex. The basai half of the 2nd segment is raised into 2 

 transverse oval masses, clearly separated ail round and a little narrowed at the base; the 

 basai half of the y& and 4 th segments are raised. The 4 front legs are paler, more yellowish 

 than the hinder, the hind tarsi may be paler below than above. 



The cf is similarly coloured. 



Xoridini. 



Lorentzia gen. nov. 



Areolet small, square; transverse médian nervure received behind the transverse basai ; 

 the transverse médian nervure in hind wings roundly curved, broken below the middle, near 

 the top of the hinder fourth. Apex of clypeus obliquely depressed ; the labrum projecting. 

 Mandibles with the teeth unequal, the lower the larger. Occiput narrowly margined. Parapsidal 

 furrows narrow, crenulated, extending to the middle. Metanotum with transverse keel; the 

 spiracles oval, about twice longer than wide. The i s t abdominal segment sessile, the basai half 

 narrowed, the sides rounded inwardly; the penultimate segment is as long as the preceding 

 2 united ; the last two-thirds of its length. Legs long, especially the hinder; the fore tibiae 

 distinctly narrowed at the base, short, as long as the basai joint of the fore tarsi; the claws 

 large, simple, the joints spinose at the apex. Antennae long, ringed with white, the 3 rd joint 

 longer than the 4*^. The type of this genus is a large handsome insect, black, largely spotted 

 with yellow, and with a longish ovipositor. Its nearest ally known to me is Torbda, Cam, a 

 Hindu-Malay genus ; the latter may be known from it by the large areolet, longer along the 

 radius and cubitus than along the transverse cubitals, by the transverse cubitus in the hind 

 wings being angled in the middle where the nervure issues, the upper and lower abscissae 

 being straight and oblique, not broadly rounded, and the pronotum is tuberculated near the 

 apex, while in Lorentzia it forms a graduai curve. In the alar neuration it is almost as in the 

 Mesostenini. In both gênera there is a minute tooth or tubercle in the centre of the clypeus below. 



1. Lorentzia flavo-maadata sp. n. 



Bivak Island, January. 

 Black, with the following yellow markings: — labrum, tegulae, basai two-thirds of the 

 scutellum, a spot on the middle of the base of metanotum, extending to the keel, gradually 



