TWO NEW ETHIOPIAN LONCHAEIDAE. 243 



9(8). Body of a shining, bluish-black colour ; third antennal joint extending a little 

 below the mouth-border . . . . . . . . lambiana, nova., nov. 



10(3). Arista plumose or at least long-haired ; antennae always extending to the 

 mouth-border ; (in all the species here comprised there are always two strong 

 sternopleural macrochaetae, the tarsi are entirely black, and the squamulae 

 are white and pale-haired). 



11(12). Last abdominal segment of the male longer than the two preceding ones 

 together, deeply excised at end and there with the two points clothed with 

 dense and long, bristly hairs ; plumosity of the arista of medium length 



excisa, Kert. 



12(11). Last abdominal segment of the male quite simple, and not much longer 

 than the preceding one. 



13(14). Scutellum quite bare , except the usual macrochaetae ; plumosity of the 

 arista only a little longer than the breadth of the third antennal joint 



gibbosa, De Meij. 



14(13). Scutellum with some hairs between the macrochaetae ; plumosity of the 

 arista nearly twice the breadth of third antennal joint . . plumosissima, sp. n. 



1. Lonchaea mochii, sp. nov. (fig. 2). 



A short and stout species, with a broad head, and of a more aeneous colour, 

 closely allied to the European jjarvicomis, Mg., and lasiophthalma, Macq., but smaller 

 and distinguished by the quite bare scutellum, and by the presence of a third middle 

 keel on the face. 



Fig. 2. Lateral view of head of 

 Lonchaea mochii, Bezzi, sp. n., $. 



^ $. Length of the body, 3'8-4 - 2 mm. ; of the wing, 3 - 7-4 mm. 



Head (fig. 2) entirely black, rather shining on the occiput, with sericeous, greenish 

 or bluish reflections on the frons, and with white shining dust on the cheeks and on 

 the face below. It is of a large size, being distinctly broader than the thorax, chiefly 

 in the female, which has the frons about twice as broad as that of the male. On 

 the vertex there are no distinct shining plates. The frons is not at all prominent, 

 and is parallel-sided in both sexes ; but in the male it is twice as long as broad, while 

 in the female it is only as long as broad ; the vertical and ocellar bristles are short 

 and thin, like the single orbital pair ; all these bristles are black, like the rather 



(C507) e2 



