MBGACHILB. 487 



medial carina up to the base of the antennse, almost meeting a 

 vertical short broad furrow running down from the anterior 

 ocellus ; scutellum large, prominent, overhanging the median 

 segment, and with an obtuse tooth on the posterior lateral angles. 

 Black ; the anterior femora above and in tront, the intermediate 

 femora, and the posterior femora and tibia? testaceous yellow ; the 

 pubescence on the head and thorax ajid nari'ow transverse apical 

 pubescent bands on abdominal segments 1-5 white ; pollen-brush 

 snow-white ; wings hyaline, nervures and tegute testaceous. 



d similar, smaller ; the tibiae and tarsi of all the legs testaceous 

 yellow ; the basal four joints of the anterior tarsi llattened and 

 lobed exteriorly. 



Hah. Mussooree ; Pegu Hills ; Tenassei'im. $ . Length 6 ; 

 e.V2^. 12 mm. J . Length 5 ; ea^'j). 11 mm. 



861. Megacliile nana, n. sp. 



5 . Closely allied to 31. pulchrlpes, and resembling it, but 

 there is no antennal carina nor groove on the front ; the 

 scutellum is not prominent nor does it overhang the median 

 segment, and the latter is rounded posteriorly ; head orbicular, 

 inner orbits slightly but distinctly convergent below ; the face 

 just above the base of the clypeus has a rounded transverse broad 

 projection ; the 2nd, 3rd, and 4th abdominal segments have a 

 marked transverse groove near the base above. Black ; the clypeus, 

 sides of the face, the cheeks, sides of the thorax, the median 

 segment, and transverse apical moderately bx'oad fasci<B on abdo- 

 minal segments 1-5 covered with snow-white pubescence ; the 

 fascia on the basal segment the narrowest, broadening laterally 

 into a square patch of dense white pubescence ; pollen-brush 

 white ; legs black with sparse white pubescence, fulvous on the 

 inside of the posterior tarsi ; wings hyaline and iridescent. 



(S similar, with a comparatively larger and broader head, covered 

 with slightly fulvous pubescence in front ; anterior cox£b dentate 

 beneath ; only the 2nd and 3rd abdominal segments with a trans- 

 verse groove above ; anal segment incised at apex and covered with 

 dense snow-white pile. 



Hah. Tenasserim. $ - Length 7-8 ; exp. 15 mm. S . Length 

 6*5 ; exp. 14 mm. 



SQ2. Megachile albifrons, Smith, Cat. i, p. 1.80, $ S ; -Da//. Ton: Cat. 

 X, p. 418. 



5 . Head and thorax in front densely and closely, scutellum 

 more coarsely, and abdomen somewhat sparsely and hnely punc- 

 tured ; clypeus slightly convex, anteriorly rounded and hidden 

 under thick pubescence ; head large, slightly wider than the 

 thorax ; abdomen somewhat elongate, not cordate, the sides 

 parallel, the apex broadly rounded, not acute, the margins of 

 segments 2-4 above depressed. Black ; the clypeus and front, 

 the pronotum, sides of the thorax, sides of the median segment, a 



