292 Mr. E. Saunders' Synojms of British 



^ something like A-macidatus, but without the spinose 

 cheeks. ? very Uke cJtrt/sostoma in colour, l)ut the 

 different arrangement of the ocelli distinguish it at once, 



19. cephalotes, Panz. Faun. Germ. 62, 16; Smith, &c. 

 = sexciiictus, Sm. = interstinctus, Sm. ? 



Larger than the preceding. Head and thorax black ; 

 the ? with two spots on the collar, and sometimes a spot 

 on the scutelium, yellow ; the scape of the antennte and 

 mandibles in both sexes yellow ; the ^ with the former 

 striped with black above ; abdomen with a wide yellow 

 band on each segment, the 1st, 2nd, and 3rd sometimes 

 narrowly interrupted ; c? with the anterior and inter- 

 mediate femora and tibiae yellow in front, and more or 

 less ])lack behind ; posterior femora black, with a yellow 

 spot near the apex ; all the tarsi yellow ; 2 wdth the 

 apices of the femora, and the whole of the tibiae and tarsi, 

 yellow. Head and thorax finely punctured, the latter 

 finely and longitudinally striate, the former in the 5 

 sometimes very large ; vertex slightly impressed, hairy 

 in front ; clypeus and margins of the eyes densely 

 covered with golden or silvery hairs, the former carinated; 

 antennae in the c? with 3rd, 4th, 5th, and 6th joints much 

 widened at the apex, and jDroduced into a blunt tooth ; 

 $ antennae simple ; thorax hairy ; metathorax longitu- 

 dinally rugose in front, transversely behind ; abdomen 

 smooth and shining, basal segment hairy above, apical 

 segment in the ? narrowly acuminate and sulcate, 

 densely fringed with bristly testaceous hairs at the sides, 

 that of the ^ fringed with fine, somewhat curved hairs ; 

 2nd segment of the abdomen beneath with a dull round 

 spot at the side near the base ; posterior and intermediate 

 tibiae denticulate, spinose in the ? . 



Length 12—15 mill. 



Common. 



Easily distinguished from the preceding by the dentate 

 antennae of the ^ , and the narrow setose apical segment 

 of the abdomen in the ? , as well as by the striate thorax 

 in both sexes. 



20. qtiadri))iitculatns, Fab. Ent. Syst. ii. p. 294, var. 

 '2-i)utci(hitus, St. F.; [icNiciildtus, Shuck. Fig. Smith, 

 Brit. Foss. Hym. pi. iii. fig. 7. 



Black ; mandibles piceous ; thorax often with two spots 

 on the collar, and the post-scutellum, yellow ; abdomen 



