TVas2JS of the Genus Tachytes. 17 



cJ . Seventh tergite very broadly truncate at tlie apex ; 

 eighth sternite very widely but rather shallowl}^ emarginate, 

 the apical angles produced into short acute spines. 



Hab. Uganda Protectorate, Unyoro, Bugonaa Forest, 

 3700 ft. {S. A. Nenve), December; Unyoro, Budongo Forest, 

 3400 ft. {S. A. Neave), December. 



Closely allied to T. hamiltuni, but differs in the colour of 

 the legs and wrings, and in the greater distance between the 

 eyes on the vertex. 



14. Tachytes labiUs, sp. n. 



$ . Nigra ; tarsis articulis tribus apicalibus subtus, calcaribusque 

 fusco-ferrugineis ; tegulis testaceis ; fronte clypeoque griaeo- 

 argeuteo-pubesceutibus ; thorace segmentoque mediano fulvo- 

 pilosis ; segmeutis dorsalibus 4 basalibus fascia lata apicali 

 griseo-argenteo-pubeseente ; area pygidiali fusco - ferrugineo- 

 setosa ; alis hj'alinis, pallidissime tlavo-tinctis, apice pallide 

 infuscatis, venis testaceis ; galea elongata. 



6 • Feminse similis ; segmento dorsali septimo s.ubargenteo- 



pubescente. 

 Long., 5 18 mm., J 15 min. 



$ . Extremely near to T. pnestabilis, but differs in having 

 the pygidial area a little more broadly rounded at the apex; 

 and in the colour of the fore legs ; the eyes are also a little 

 further apart on the vertex. 



(^ . Seventh dorsal segment broadly rounded at the apex, 

 not truncate; eighth sternite narrow, not more than half 

 as wide as in prcestabilis, shallowly emarginate at the apex, 

 the apical teeth blunter than in prceslabilis. 



Hab. Nyasaland, Mlanje {S. A. Neave), December to 

 February. 



Probably only a geographical race of prastabilis, but the 

 difference in the apical segments of the male seems 

 important. The male is the type. 



15. Tachytes hamiltoni, sp. n. 



(S . Niger ; fronte clypeoque aureo-pubescentibus ; thorace seg- 

 mentoque mediano pallide fulvo-hirsutis, mesonoto lateribus 

 pallide aureo-pubescente ; segmentis dorsalibus 5 basalibus 

 fascia apicali argenteo-pubescente, pygidio rufo-pubescente ; 

 tegulis testaceis ; maudibulis basi, femoribus parte apicali, tibiis 

 tarsisque ferrugineis ; alis flavo-byalinis, venis ferrugineis. 



Long. 15 mm. 



Ann. do Mag. N. Hist. Ser. 8. Vol. xx. 2 



