72 



APIDJ5. 



rufo- testaceous beneath, the femora dilated, the apex of the tibiae 

 testaceous above ; the tarsi pale testaceous, dilated, with the first 

 and second joints produced into large projecting lobes, the first 

 having a longitudinal fuscous stripe, all the joints fringed behind 

 with long white pubescence, which is edged narrowly with fuscous ; 

 the coxae armed with black spines ; the intermediate femora are 

 dilated, and, as well as the tibiae, rufo-piceous beneath ; the tarsi 

 rufo-testaceous, with the tips of the joints rufo-fuscous ; the pos- 

 terior femora broadly dilated and the tibiae curved, the tarsi rufo- 

 piceous ; the femora rufo-piceous beneath. Abdomen shining, the 

 margins of the segments thinly fringed with cinereous pubescence ; 

 the apical margin of the terminal segment slightly notched in the 

 middle. 



Bab. St. Paulo, on the Amazons. 



32. Megachile compacta. 



Female. Length 6 lines. — Black ; the thorax above clothed with 

 fulvous pubescence. The face with short cinereous pubescence at 

 the sides of the clypeus ; above the insertion of the antennae it is 

 fulvous ; the flagellum fulvous beneath. The wings fulvo-hyaline, 

 the nervures and tegulae ferruginous ; all the tarsi with bright ful- 

 vous pubescence beneath. Abdomen shining and very finely punc- 

 tured ; the apical margins of the segments with pale fulvous fasciae, 

 usually more or less interrupted in the middle ; the apical segment 

 with erect black hairs ; clothed beneath with changeable yellowish- 

 white pubescence. 



Hah. Santarcm. 



This is probably the female of M. hilaris. 



33. Megachile hilaris. 



Male. Length 6 lines. — Black ; the legs ferruginous, the anterior 

 tarsi dilated, and the abdomen with pale fasciae. The face with 

 bright pale golden pubescence, that on the vertex and disk of the 

 thorax fulvous, that on the cheeks and thorax beneath white ; the 

 flagellum fulvous beneath. The metathorax with pale pubescence; 

 the intermediate and posterior legs rufo-piceous, darkest above, 

 their tarsi pale rufo-testaceous ; the anterior tarsi yellowish ; the 

 dilated joints with a thick fringe of white pubescence, which is 

 fulvous beneath ; the other tarsi with a thin white fringe ; the 

 anterior coxae with stout blunt spines ; wings hyalino, with a fus- 

 cous cloud on their apical margins ; the nervures ferruginous, the 

 tegulae rufo-testaceous. Abdomen very finely and closely punc- 

 tured ; the basal segment with pale fulvous pubescence, the apical 

 margins of the segments with pale fasciae ; the fifth segment with 

 very short pale pubescence at its base and with black beyond, the 

 entire segment sprinkled with long black hairs ; the sixth segment 



