On new G rasshoppers from East Africa. 675 



Ventral spines on all femora covering ventral surface, except 

 apically ; fore and mid tibi?e with one or two posterior 

 setulose hairs ; antero-venti-al and postero-ventral spines on 

 all femora stout ; hind tibia with one postero-dor^al and two 

 antero-dorsal setulae ; tarsal claws long and strong. Wings 

 narrow ; veins 3 and 4 divergent apically ; outer cross-vein 

 at about its own length from inner and one-third of its own 

 length from apex of fifth vein. 



Female. — Differs from the male in having the thorax and 

 abdomen more robust, the latter being ovate; the abdominal 

 spots much larger, extending along the entire hind margin, 

 except in centre ; the longitudinal wing-veins not noticeably 

 browned ; and the tibial bristles stronger, with one antero- 

 dorsal bristle on mid-tibia. 



Length 9-12 mm. 



Type^ male, allotype, and two male paratypes, Milford, 

 New Zealand, 24. xii. 1920 (C. Fenwick). 



It is remarkable that all the specimens of Exsul that I 

 have seen, including the genotype, are from Milford Sound. 

 The genus probably occurs elsewhere on the sea-coast of at 

 least the southern island. 



LXXVII. — Some new Short-horned Grasshoppers from East 

 Africa. By B. P. Uvarov, F.E.S., Assistant Entomo- 

 logist, Imperial Bureau of Entomology. 



The present paper is based on the collections sent to the 

 Imperial Bureau of Entomology by the Government Ento- 

 mologists in Uganda and Kenya Colony. All the actual 

 types are preserved in the British Museum ; a few paratypes 

 of the species represented by sufficiently long series of speci- 

 mens have been returned to the Government Entomologists. 



1 . Gastrimargus mirabilis, sp. n. 



S . Much more compressed laterally than any known 

 species of the genus. Antennae reaching halfway between 

 the front and middle coxae. Face callosely rugulose. Frontal 

 ridge in profile distinctly convex, forming a very wide curve 

 with the vertex ; its surface slightly convex, punctured, and 

 callosely rugulose ; its margins not raised, subcallous, almost 

 reaching the clypeus, very feebly approximated below the 

 ocellum. Lateral facial keels distinctlv arched. Cheeks 



44* 



