180 ZOOLOGICAL EESULTS OF THE EUWEISTZOEI EXPEDITION. 



within the raised margins, aud convex in the middle ; 2nd segment also laterally 

 margined with broad, shallower, lateral grooves within, a medial raised triangular area 

 at base bordered beyond by a shallow concavity which is longitudinally strongly striate ; 

 2nd and ord segments with short, obliquely transverse, shallow grooves, which are also 

 longitudinally striate or serrate. Head, thorax, and abdomen clothed with short, very 

 sparse, erect, brown hairs ; on the front of the face, on the tibiae and tarsi, and on the 

 sheath of the ovipositor this pubescence is shorter and very dense, of a golden-brown 

 colour on the tibiae and tarsi of the anterior legs, and black on the sheath of tlie 

 ovipositor, on the apical third of which last it turns to greyish-white. 



Hah. Ruwenzori, 7000 ft. {G. F. Scott Elliot). 



One female specimen. 



Family F o R M i c i D ^ Latr. 



Subfam. DoRTLiNiE Shuck. 



Genus DoRTLUs Fabr. 

 4. DoRYLUS NIGRICANS 111. Magaz. f. Insectenk. i, p. 188 (1802). 

 One specimen from Mubuku Valley, E. Ruwenzori, 5000-7000 ft. January 17th. 



Family Sphegid^. 



Genus Tachytes Panz. 



5. Tachytes sp. 



One specimen from Mubuku Valley, E. Ruwenzori, 7000 ft. 



Genus Philanthos Fabr. 



6. Philanthds limatus, sp. n. 



? . Head and thorax black, the clypeus, a patch above it on either side touching 

 the inner margin of the eyes, a crescentic mark on the front between the bases of the 

 antennae, and a small spot on the scutellum and postscutellum respectively, yellow. 

 Wings hyaline, slightly brownish towards their apices, nervures and tegulsB brownish- 

 yellow; legs black. Abdomen yellow, darkening to reddish-brown posteriorly ; basal 

 segment black above and beloAv ; 2nd, 3rd, and 4th segments with large quadrate black 

 marks on the dorsum ; 5th and 6th segments shaded with black above. Head very 

 broad, much broader than the thorax ; mandibles powerful, opaque, grooved above ; 

 clypeus and front below the antennae with the yellow patches on either side smooth 

 and shining ; antennae robust, opaque, not shining, 2nd flagellar joint one-third longer 

 than the 3rd and twice the length of the 4th ; front above the base, antennae up to the 



