IMr. l\. E. Tiuiicr oil Fossorial Ilifmenoptcra. 4(j7 



less hroiulh' at the si;les aud narrowly at the apex yellow. 

 The sixth termite of the female is very narrow at the apex, 

 more so than in bayandarum, aud the second tergite is more 

 distinctly punctured in both sexes than in that species, 

 tliou;^h less closely than in diudoiita. Tlie second tergite of 

 the female is bn^ader than in bar/anduruin, though scarcely 

 as broad as in diodunta. 



Hub. 30 miles from Magadi Junction, British E. Africa 

 {F. G. Hamilton), May 1912; Marsabit, British E. Africa 

 (C A. Neave), October 1911 ; east shore of Victoria Nyanza, 

 near Karungn (-S^. A. Neave), April 1911 ; Kibwezi, British 

 E. Africa, 3000 ft. (S. A. Neave), April 1911. 



It is qiute possible that this and baganJarum may prove 

 to be a subspecies of diodunta, but they are quite easily 

 distinguished, aud until large collections are available n)ay 

 conveniently stand as distinct species. C. severini, Kohl, 

 is also very near in structure, 



Cerceris hiculor, Sm. 



Cerceris bicolor, Sm. Cat. Hym. B.M. iv. p. 447, uo. o2 (18o6j. 2 . 

 Cerceris J osior, Sm. Cat. Ilym. B.M. iv. p. 447, uo. 54 (1850). S • 



Cerceris andersojii, sp. n. 



5 . Nigra ; mandibulis, apice excepto, flagello, articulis apicalibus 

 supra iufumatis, tegulis, segmeuto abdominali sexto, pedibusquo, 

 coxis excei>tis, ferrugiueis ; clypei lamina macula magna, carina 

 inter antennas ad clypei basiu, facie fascia lata longitudinali 

 utrinque, postscutello, tergitis prime, tertio, quarto quiutoquo 

 fascia augusta apioali, sternitoque tertio macula transversa 

 apicali utrinque tlavis ; alis sordide hyaliuis, apice cellulaque 

 radiali intuscatis, veuis fuscis, stigmate testaceo ; clypeo lamina 

 porrecta libera ; mesopleuris baud tuberculatis ; sternito secundo 

 area basali elevala nulla. 

 Long. 10 mm. 



? . Clypeus with a porrect lamina, free from near the 

 base, the lamina coarsely punctured at the sides, the apical 

 margin very shalloAvly and broadly emargiiuite and nearly 

 equal to the distance from the base of the clypeus to the 

 apex of the lamina ; the clypeus below the lamina smooth 

 and shining, truucate at the apex. Antcnnre inserted about 

 twice as far from the anterior ocellus as frc^m the base of the 

 clvpeus, the sei ond joint of the flagellum less than half as 

 long again as the third. Inner orbits of the eyes almost 

 parallel ; posterior ocelli further from the eyes than fi-oni 

 each other. Face sparsely punctured ; head and thorax 



31* 



