NEiV AND LITTLE AAO/t A I1YMEN0PTERA. 249 



21. Megachile tuberculata, Smith. 



Megachile tuberculata, Smith. Proc. Linn. Soc. II p. 46, 5. 

 Habitat: Borneo; Singapore; Burma (Pegu Yoma) ; Tenasserim 

 (Mergui), 



Female : Length 10 to 12 lines ; expanse 18 lines. 



Description : $ Head as broad as the thorax, black ; the man- 

 dibles long, very stout, striated longitudinally, their inner margins 

 furnished with a prominent tooth close to the base, the apex ending 

 in three large teeth, the lowest one acute ; clypeus black, covered 

 rather sparingly with black pubescence, the upper portion project- 

 ing obliquely forward, and so forming a large and very prominent 

 tubercle, below this tubercle the plane of the clypeus is bent verti- 

 cally down at an angle ; the front between the antennae, the cheeks, 

 and back of the head clothed with black pubescence, the vertex and 

 space round the ocelli closely punctured. Thorax black, rather 

 coarsely and densely punctured, clothed with black pubescence, 

 which on the lateral angles of the scute-Hum and on the face of the 

 metathorax fades to a pitchy brown ; wings fulvo-hyaline, with broad 

 fuscous margins ; legs black, clothed with black pubescence, the 

 claws dark chestnut brown. Abdomen black, covered with short stiff 

 black pubescence ; the pollen brush black. 



This, one of the largest of the leaf-cutter bees, is rare in Burma. 

 It is easily identified by its remarkable tuberculated clypeus. 



22. Megachile luculenta, n. sp. 



Habitat : Tenasserim (Thoungyeen Valley ; Tavoy). 



Female: Length 11 lines; expanse 18 lines. 



Description : $ Head large, broad as the thorax ; mandibles 

 broad, sparsely punctured, black, their outer margins fringed with 

 black hairs, the apex furnished with four teeth, the two lower ones 

 very acute ; clypeus black broader than long, closely punctured, 

 vertical, forming a marked transverse ridge with the plane of the 

 face, which, from the vertex to the upper margin of the clypeus, 

 slopes obliquely forward, anterior margin of the clypeus truncated 

 and bisinuate ; the antennae, the front vertex and cheeks black, the 

 face has a little black pubescence on each side, the vertex and cheeks 

 closely punctured and covered sparsely with black hairs ; the ocelli 

 arranged in a curve. Thorax black, coarsely punctured, the 



