204 GRAMMAR OF ENTOMOLOGY. 



has its ligula variously developed ; it is always 

 trilobed, but the central lobe, though always elon- 

 gate, varies in the proportion it bears to the labial 

 feelers ; the lateral lobes are very minute, short, 

 and acute ; the labial feelers have the basal joint 

 long, the second longer, the third and fourth 

 short, somewhat conical, and forming an angle 

 with the second ; the hind tibiae are not formed 

 for collecting pollen, but the body of the female is 

 clothed beneath with a thick covering of hair, 

 which serves for this use. Anthidium, Megachile, 

 Osmia, Heriades, Chelostoma, Ceratina. 



714. Flower-bees (Panurgites). Larva and pupa, 

 as far as the British genera are concerned, un- 

 known. Imago with antennae twelve-jointed in 

 the females, thirteen-jointed, and somewhat moni- 

 liform, in the males ; maxillae with the blade lan- 

 ceolate and of moderate length ; the maxillary 

 feelers of equal length, and six-jointed ; labium 

 with the ligula trilobed, the central lobe about 

 equal to the true lip in length, the lateral lobes 

 very short and acute ; the labial feelers with four 

 joints, varying but slightly in length from each 

 other ; the feelers exceed the ligula in length ; 

 wings large, flight slow ; insect inactive ; body 

 rather stout ; black, hairy. Inhabits in immense 

 abundance the flowers of Leontodon, &c. in 

 autumn. Panurgus. 



715. Burro wing-bees (Andrenites). Larva in- 

 habits a long tortuous burrow, formed by its parent 



