CERCERIS SABULOSA. 195 



been captured in Norfolk and Suffolk, and is, I suspect, very 

 widely distributed ; it is gregarious, and forms large colonies, 

 frequently in hard footpaths ; it is often found on the flowers of 

 the wild Bryony. 



5. Cerceris sabulosa. 



C. nigra; thorace maculato; abdomine fasciis quinque pedi- 

 busque flavis ; alis marginibus anterioribus fuscis. 



Philanthus sabulosus, Panz. Faun. Germ. 63. 13 $ . 

 Philanthus quadricinctus, Panz. Faun. Germ. 63. 15 ?. 

 Cerceris fasciata, Spin. Ins. Ligur. i. 97. 2 $ . 

 Cerceris quadricincta, Latr. Hist. Nat. Ins. xiii. 316. 2 ? . 



^'and. Lind. Obs. ii. 144. 8. 



Shuck. Fuss. Hym. 243. 5. 



Dahlb. Hym. Europ. i. 212. 126 (nee var. /3). 



St. Farg. Hym. iii. 23. 15. 



Lucas, Explo. Sc. Alger. iii. 254. 



Wesm. Hym. Foss. Belg. 102. 3. 

 Cerceris sabulosa, Shuck. Foss. Hym. 244. 6 $ . 



Female. Length 5 lines. Black, closely punctured and slightly 

 shining; the face, a spot behind the eyes, the scape of the 

 antennae, and base of the mandibles, yellow ; a black line on 

 the scape behind; the flagellum fulvous beneath. Thorax : an 

 interrupted line on the collar, a spot on the tegulae, and the 

 post-scutellum, yellow; the legs yellow; the coxae, anterior 

 and intermediate trochanters and femora, except the apex of 

 the latter and the apex of the posterior femora, black ; the 

 posterior tarsi fusco-ferruginous ; wings slightly fulvous, with 

 a dark fuscous stain occupying the marginal cell and passing 

 onwards to the apex of the wings. Abdomen : the second and 

 fifth segments yellow, and the third and fourth with a narrow 

 attenuated band at their apical margins; the longitudinal 

 carinae on the apical segment rather wider apart at the base 

 than the apex, the intermediate space finely rugose and opake. 



Var. a. A yellow spot behind the eyes. 



Male. Length 4| lines. Black ; the face, scape in front, and 

 the mandibles at their base, yellow ; the flagellum fulvous be- 

 neath ; the scape sometimes entirely yellow. Thorax : a spot 

 on each side of the collar, the tegulae, the post-scutellum, and 

 the tibiae, tarsi, and apex of the femora, yellow ; wings fulvo- 

 hyaline, with a fuscous stain in the marginal cell, and con- 

 tinuing to the apex of the wings. Abdomen : a yellow band 

 on the second and four following segments, that on the second 



K 2 



