320 H. Friese. 



von Las Pawas; im Mus. Wien 2 cT von Venezuela; im Mus. Budapest i 9 von Co- 

 lumbia; im Mus. Paris 2 § von Venezuela (September, v. Geay), i $ von Columbia. 



134. Centris semicaerulea Sm. 

 1874. Centris semicaerulea Smith, o", Ann. and Mag. Nat. Hist. (4), XIII, pag. 363, n. 28. 



»cf. Head and thorax black, abdomen blue. The pubescence on the face and 

 Vertex black, that on the cheeks and thorax above cinereous, the anterior and inter- 

 mediate legs have a black pubescence, that on the posterior tibiae and basal Joint of the 

 tarsi fulvous. The basal segment of the abdomen and the apical raargins of the follow- 

 ing Segments, with a fascia of pale fulvous pubescence. Wings fusco-hyaline, clypeus and 

 labrum yellow, the former with a minute black triangulär spot at its anterior margin; 

 a pale testaceous spot near the apex of the mandibles. Long. 8V2 lines (= 18 mm.). 



»Venezuela.« 



Ist eine dunkle Varietät \on festiva Sm.! 



Mir liegt von var. semicaerulea i cT von Puerto Caballo (Mus. Berlin) und 

 I Pärchen aus Brasilien vor (Mus. Budapest). 



135. Centris flavoihoracica Friese. 



1899. Centris flavoihoracica Friese, 9, Termesz. Füz., XXIII, pag. 46. 



9. Nigra, flavo-hirta, abdomine viridi-caeruleo, utfestiva, sed thorace flavo-hirto. 



Centris flavoihoracica ähnelt der festiva sehr, doch hat sie einen gelbbehaarten 

 Thorax. 



9. Schwarz, gelb bis gelbbraun behaart; Kopf schwarz behaart, Clypeus äusserst 

 fein runzelig punktirt, mit einzelnen grösseren Punkten den Rändern zu. Thorax oben 

 lang und dicht rothgelb bis gelbbraun, unten hellgelb behaart. Abdomen blaugrün, zer- 

 streut punktirt, der Spitze zu fast gerunzelt, glänzend, überall dicht und lang gelb be- 

 haart, Segment 5 und 6 mehr oder weniger roth gefärbt und roth beborstet. Bauch 

 schwarzbraun, mit blauem Schimmer, sparsam gelb befranst. Beine schwarzbraun, die 

 hinteren mehr rothbraun, schwarzbraun behaart, Scopa rothgelb, Metatarsus innen roth- 

 braun beborstet. Flügel gebräunt, Adern und Tegulae schwarzbraun. 18 — 19 Mm. lang. 



Centris flavoihoracica liegt mir in 2 9 von Venezuela vor (Mus. Berlin). 



i36. Centris pluniip es Sm. 



1854. Centris plumipes Smith, cT 9, Catal. Hymen. Brit. Mus., II, pag. 373, n. 23. 



»9. Black, the head and thorax black, the former having a purple or aeneous 

 tinge on the face and vertex; the clvpeus on each side, as well as the anterior angles of 

 the face, the labrum and mandibles pale testaceous; the cheeks densely clothed with 

 cinereous pubescence; there is also a little short cinereous pubescence between the an- 

 tennae. Thorax: the middle of the disk has an aeneous tinge, densely clothed above 

 and at the sides with a short black pubescence, beneath it is pale bright ochraceous; 

 the legs have more or less of an aeneous tinge above; the anterior and intermediate 

 legs, above, have their pubescence black, that on the tarsi beneath reddish brown; the 

 posterior tibiae and tarsi pale rufo-testaceous, densely clothed exteriorly with long pale 

 ochraceous pubescence, the hairs beautifully pectinated or plumose; the wings dark 

 fuscous, beautifully tinged with a purple iridescence. Abdomen olive-green at the base, 

 gradually bccoming coppery towards the apex. Long. 9 lines (= 19 mm.). 



