MEGACHILE. 269 



Subsection 3. DASYGASTERS (convey pollen on the belly). 

 All with two sulmarginal cells to the wings. 



Genus 19. MEG-ACHILE, Latreille. (Leaf-cutters.) 



APIS ** c 2 a, Kirby. 

 (Plate XII. fig. 2 and 3 $ ? .) 



Gen. Char. : HEAD as \vide as the thorax, flat and 

 broad on the vertex, where, on the anterior edge, the 

 ocelli are disposed in a triangle ; antenna shortish, fili- 

 form, geniculated ; scape about as long as two first joints 

 of flagellum, which increases both in length of joints and 

 their substance from base to apex, the terminal one 

 being the longest, and longitudinally compressed; face 

 and clypeus very pubescent, concealing their divisions ; 

 clypeus transversely lunulate, scarcely convex ; labrum 

 longitudinally slightly convex and oblong, with the sides 

 parallel ; mandibles broad, widening outwardly, irregu- 

 larly quadridental, the two inner teeth obtuse ; cibarial 

 apparatus moderately long; tongue more than twice the 

 length of the labium, tapering from the base to the apex, 

 where it terminates in a minute knob ; paraglossce very 

 short, scarcely one-sixth the length of the tongue, co- 

 adunate at the base and acuminate at the apex, where, 

 in repose, they lap round the base of the tongue ; labial 

 palpi three-fourths the length of the tongue, the two 

 basal joints long, subequal, membranous, linear, slightly 

 tapering to the acute apex of the second, where the third 

 subclavate joint articulates just before its termination, 

 and conterminous with which is the fourth, shorter than 

 the third, but also subclavate ; labium not quite half the 

 length of the tongue, with a long subobtuse process in 

 the centre of its inosculation ; maxilhe subhastate, and 



