hymenoptera. 441 



21. Cerceris flavicornis. B.M. 



Cerceris flavicornis, Brulle, Exped. Sc. de Moree, iii. 373. 824. 

 t. 51. f. 3. 



Hab. The Morea ; Albania. 



22, Cerceris capitata. 



Female. Length 6^-7 lines. — Black, closely punctured : the 

 head wider than the thorax ; the clypeus produced at its apex 

 and rounded, not elevated, but curving slightly upwards ; a large 

 spot behind the eyes, two small ones on the vertex, the scape in 

 front, a large ovate spot on the clypeus, a small one on each 

 side, the sides of the face as high as the antennae, and a spot at 

 the base of the mandibles, yellow ; the mandibles ferruginous ; 

 the flagellum fulvous beneath. Thorax : an interrupted line on 

 the collar, the tegula?, a minute spot on each side of the scu- 

 tellum, the post-scutellum, and an angular spot on each side of 

 the metathorax, yellow ; the wings slightly coloured, a darker 

 cloud at the apical margins of the anterior pair, the nervures 

 ferruginous; the subcordiform space at the base of the meta- 

 thorax roughly punctured; the legs of a reddish-yellow, with 

 the tarsi, the tibise, and femora in front, yellow ; the coxae rufo- 

 fuscous. Abdomen : the first segment with a yellow spot on 

 each side, the three following with a subinterrupted fascia on 

 their apical margins, widest at the sides ; the fifth segment 

 yellow, with an angular black spot in the middle of its base ; 

 beneath black, with the middle of the segments rufo-piceous. 



Hah. Albania. (Coll. W. W. Saunders, Esq.) 



23. Cerceris trifasciata. B.M. 



Female. Length 5 lines. — Black : the head and thorax strongly 

 punctured ; the face, below the insertion of the antennae, yellow ; 

 the margins of the clypeus and the triangular spot above it, 

 black ; the mandibles yellow, with their tips black ; the basal 

 joints of the flagellum ferruginous beneath, the tip ferruginous. 

 Thorax : the tegulae black, smooth and shining ; the wings slightly 

 coloured, the nervures ferruginous, the anterior margin of the 

 fore-wings clouded towards their apex ; the anterior and inter- 

 mediate tibiae and tarsi yellow, the latter slightly ferruginous; the 

 posterior tibiae and tarsi ferruginous. Abdomen punctured, the 

 two basal segments strongly so, the three following much more 

 finely so and shining ; the apex of the fifth and the sixth strongly 

 punctured ; the second, third and fourth segments with a narrow 



