CERCERIS LABIATA. 191 



the spaces between the carina? on the apical segment trans- 

 versely rugose. 



Male. Length 5-6 lines. — Differs in having the scape in front, 

 the mandibles outside, and the face entirely, yellow ; two or 

 three of the basal joints of the flagellum beneath, and one or 

 two of the apical ones beneath, fulvous ; the legs bright yellow, 

 the posterior trochanters and a spot on their coxse yellow ; the 

 spot behind the eyes, that on the sides of the metathorax, and 

 on the basal segment of the abdomen, obsolete ; the yellow 

 bands on the abdominal segments much narrower ; the spaces 

 between the carinae on the apical segment shining and punc- 

 tured. 



This is an abundant and widely distributed species ; it bur- 

 rows in hard, flat, sandy spots, appearing about the middle of 

 July. I found it plentiful in Sandown Bay, Isle of Wight, in 

 the middle of August. The females vary considerably in size, 

 but very little in colouring. 



2. Cerceris labiata. 



C. nigra, flavo-variegata ; clypeo allevato; abdomine fasciis 



quinque flavis ; pedibus flavo-ferrugineis. 

 Mas. — Clypeo piano ; pedibus flavis. 



Crabro labiatus, Fabr. Ent. Syst. ii. 269. 11?. 

 Crabro cunicularius, Schrank, Faun. Boic. ii. 334. 2181. 

 Crabro bidens, Schrank, Faun. Boic. ii. 335. 2183. 

 Philanthus labiatus, Pan:. Faun. Germ. 03. 16$. 



Fabr. Syst. Piez. 303. 10. 

 Philanthus arenarius, Pan:. Faun. Germ. 46. 2 £ . 

 Cerceris nasuta, Latr. Gen. Crust, et Ins. iv. 94. 

 Cerceris labiata, Van d. Lind. Obs. ii. 111. 5. 



Shuck. Foss. Hym. 236. 2. 



Dahlb. Hym. Europ. i. 217. 129. 



Wesm. Hym. Foss. Bely. 104. 5. 



Female. Length 6 lines. — Black, punctured, and shining; the 

 clypeus projecting from its base, its anterior margin rounded ; 

 the clypeus, a large semicircular spot on each side of the face, 

 the basal half of the mandibles, and a minute spot behind the 

 eyes, yellow; the edge of the clypeus black; the flagellum 

 fulvous beneath. Thorax : the punctures on the disk oblong, 

 running into striae ; the triangular enclosed space at the base 

 of the metathorax longitudinally striated ; an interrupted line 

 on the collar, the tegulee, and post-scutellum, yellow ; wings 



