148 BEES OF GREAT BRITAIN. 



clypeus rounded, and having on each side a short shghtly 

 curved tooth ; the apical segment of the abdomen armed at the 

 base on each side with a slender acute spine, the lateral angles 

 of the fifth segment slightly produced ; the apex terminating 

 in two bifurcate appendages, the upper tooth of the bifurca- 

 tion very short and obtuse, the low^er tooth more elongate and 

 acute. B.M. 



This is very probably the male of C. simplex^ being equally 

 abundant in the London district. 



I 



4. Coelioxys Timbrina. 



C atra; capite thoraceque punctulatissimis, scutello utrinque 

 dente incurvo armato, margine postico rotundato. 



Coelioxys umbrina, Smith, ZooL iii. 1153. 4. 



Female. Length 4-5 lines. — Black ; the pubescence on the 

 face, sides of the thorax, and the fasciae of the abdomen, yel- 

 lowish-white ; the scutellum rounded posteriorly, and having ^ 

 on each side a short incurved tooth ; the wrings fusco-hyaline, f 

 their apical margins having a broad fuscous cloud. Abdomen 

 shining, the punctures coarse, but not very close ; the apical 

 segment has a slight longitudinal carina, the apex is closely 

 punctured, opake, and sublanceolate ; the inferior plate pro- 

 duced a little beyond the upper one, its lateral margins nearly 

 parallel, its apex angular. B.M. 



Male. Length 3-4 lines. — The head and thorax as in the other 

 sex, the sides of the abdomen slightly curved, the apex divided 

 into tw^o bifurcate processes, the upper teeth being short and 

 obtuse, the lower teeth more elongate and acute ; on each side 

 of the segment an acute spine or tooth, and the extreme lateral 

 apical margins of the sixth segment produced into a short 

 tooth. B.M. 



This species occurs in the greatest abundance in Sandown Bay, 

 Isle of Wight, in the month of July, in company with Saropoda 

 bimaculata, A single specimen of the male w^as taken some 

 years ago in Hampshire, in the nest of Saropoda, When very 

 recently disclosed the pubescence has a yellow tint, but it will 

 usually be found cinereous from exposure. 



