4()(> 



Mr. \{. I'j. liiriH'r «>« Fossorial ////^ticnoptera. 



tvansvois>?ly striate, tlic str'ie very feebly iuvlicil. Abdomen 

 nliHost siuootli, finely Jieicnlatc, tiic basal segment distinetly 

 broader tban long, with a few scattered punctnrcs ; sixtli 

 tergite strongly narrowed from tlie base to near the niiildle, 

 thence narrowly produced with abnost parallel sides and 

 narrowly rounded at the apex. Sixtb sternite deeply tri- 

 angularly cmargiuate at the apex, -with tufts of golden liairs 

 sprin;jing from just beneath the apical angles, the sixth 

 tei'giti' margined laterally with gohlen hairs, spi'inging from 

 beneath the segment. 



(^ . Mandibles with a blunt ill-defined ti^otli n(^ar the 

 middle of the inner margin ; elypeu-^ and front minutely 

 punctured, sparsely clothed with short sericeous pubescence ; 

 the clypeus longer than broad, narrowed antei'iorly, the 

 apical margin with three obtuse teeth. Antenna} inserted 

 nearly as far from the base of the clypeus as from the 

 anterior ocellus ; second joint of the flagellum twice as long 

 as the first. First tergite broader than long; sixth sternite 

 with an acute spine and a tuft of long golden hairs at the 

 apical angles ; seventh sternite shallowly emarginate at the 

 apex ; seventh tergite parallel-sided, truncate at the apex, 

 half as long again as l)road. 



Hob Kai'u River, near Hoima-Kampala Road, Uganda 

 Protectorate, 3500 ft. {S. A. .\eave), December 29-31, 191 1, 

 2 ? V ; Siroko River, near W. foot of ]\lt. Elgon, 3G00 ft. 

 Uganda Protectorate {S. A. Neave), Aug. 12-11, 1911, 1 c? • 



Very near C. diodonta, Schlett., though differing much 

 in cohnir. The structural points in both sexes correspond 

 closely, ijut the striation of the basal area of the median 

 segment is more oblitjue in diodonta and the pnncturation 

 of the second tergite is quite distinct, not obsolete as in the 

 present species ; the second tergite is also broader in 

 diodonta, being rather sharply broadened just behind the 

 base. 



Cerceris so da lis, sp. n. 



? (^ . Very close to C. bnyandarum and practically identi- 

 cal with that species in thestrucinre, colour, and sculpture of 

 the head, thorax, and median segment, the female, however, 

 has the ))osterior margin of the pronotum and the post- 

 scutellum yellow. The colour of the abdomen is ferruginous 

 in both sexes, the sternites at the base and the middle of the 

 second tergite black ; the first tergite with a narrow apical 

 band, second very broadly at the sides and narrowly at the 

 apex, tergites 3-5 in the female and 3-G in the male rather 



