Monographie der Bienengattung Centris (s. lat.). -^15 



Centris klugi steht der inermis nahe infolge der Breite des Körpers; mir Hegen 

 2 9 von Para und Brasilia (Mus. Budapest) vor. 



122. Centris ardens Sm. 



1874. Centris ardens Smith, 9, Ann. and Mag. Nat. Hist. (4), XIII, pag. 867, n. 65. 



»9. Head and thorax Black, legs and abdomen ferruginous; the clypeus, labrum, 

 mandibles and scape of the antennae in front pale yellow; a narrovv fascia on the an- 

 terior margin of the clypeus and 2 large subquadrate spots at its base, black; the man- 

 dibles ferruginous at their apex, the face covered with short pale downy pubescence, 

 that on the vertex fuscous; the cheeks have a white pubescence. Thorax clothed above 

 with dull ferruginous pubescence; on the sides and beneath it is pale and glittering; 

 the legs with fulvo-ferruginous pubescence. Wings subhyaline. Abdomen: a little pale 

 fulvous pubescence at the base, the apical margin of the 5. segment and the sides of the 

 6. with bright fulvous pubescence; the i. segment and the apical margins of the 2.-3. 

 with a band that is widest in the middle, abruptly narrowed toward the lateral margins, 

 to which it does not extend, black; a waved black line in the middle of the 4. segment 

 and sometimes an indistinct one on the 5., the 2 latter frequently wanting. Long. 

 7 lines (^= 15 mm.). 



»Brasil (Ega).« 



123. Centris concinna Sm. 



1874. Centris concinna Smith, d 9, Ann. and Mag. Nat. Hist. (4), XIII, pag. 870, n. 77. 



y>^. Head and thorax black; the legs and the abdomen ferruginous, the latter 

 black at the base above. The clypeus, face on each side of it, labrum, mandibles and 

 scape in front yellow, a large subovate black spot at the base of the clypeus that termi- 

 nates in a point in front and which has a narrow yellow line down the centre, the 

 pubescence on the cheeks white, that on the face and vertex fulvous. Thorax clothed 

 with fulvous pubescence above, on the sides and beneath it is paler, on the legs it is 

 fulvo-ferruginous. Wings subhyaline; tegulae pale testaceous. Abdomen: the basal 

 segment with pale fulvous pubescence, on the apical margin of the 2. and following 

 Segments it is fulvous. Long. 7 lines {== 15 mm.). 



»(f. Smaller than the female, in all respects closely resembling it; the clypeus has 

 a black line at its lateral margins; the abdomen has the 2.-3. segments more or less 

 ferruginous laterally. 



»Brasil (Tapajos).« 



124. Centris perforator Sm. 



1874. Centris perforator Smith, 9, Ann. and Mag. Nat. Hist. (4), XIII, pag. 870, n. 79. 



»9. Head and thorax black, legs and abdomen ferruginous. Head: the clypeus, 

 labrum, mandibles, face on each side of the clypeus and the scape in front yellow; 

 2 semicircular black spots on the clypeus; flagellum of the antennae, except the 2 basal 

 joints, obscurely ferruginous beneath. Thorax clothed above with ochraceous pubes- 

 cence, on the sides and beneath it is paler; pubescence on the legs is pale fulvous, 

 posterior femora have a small tooth near their base beneath. Wings subhyaline, their 

 nervures fuscous. Abdomen: the basal segment with pale ochraceous pubescence, the 3 

 apical Segments fringed at the sides with fulvous pubescence. Long. 6 lines (= 1 2 ^/^ mm.). 



»Brasil (Pernambuco).« 



23* 



