Monographie der Bienengattung Centris (s. lat.). 333 



face on each side, the labrum and mandibles yellow, the latter black at their tips; the 

 scape vellow in front, the flagellum, except the 2 basal joints, testaceous beneath. Thorax 

 clothed above with fulvo-ochraceous pubescence, paler on the metathorax and beneath ; 

 legs rufo-testaceous, tibiae and tarsi clothed above with fulvo-ochraceous pubescence, 

 that on the tarsi brightest; wings hyaline and iridescent; the basal segment of the ab- 

 domen of a metallic green, the following segments yellow, their apical margins having 

 a fascia of a rufo-testaceous colour, having a metallic green tinge, beneath reddish- 

 yellow, the 3. — 4. segments having a transverse fuscous stain. Long. 7 lines (= 15 mm.). 



»o\ Rather smaller, but closely resembling the female, differing only in having 

 the yellow of a brighter colour on the face, the clypeus having merely a dark line on 

 each side; the scutellum pale testaceous, the anterior femora in front, towards their 

 apex and the tibiae above having a vellow line; their intermediate and posterior tibiae 

 have a spot at their base and the femora a yellow spot near their apex beneath; other- 

 wise as in the other sex. 



»Jamaica.« 



Centris fasciatella ist an den nicht verdickten Hinterbeinen zu erkennen. Mir 

 liegt ein Pärchen von Mexico (Mus. Budapest) vor; ferner einige <S von Bahia und 

 Brasil (Mus. Wien) und 9 von Jamaica (Mus. Berlin). Es ist nicht unmöglich, dass 

 fasciatella als extreme Form von versicolor-apicalis, insularis, varia und inermis auf- 

 zufassen ist; diese Formen tragen gleiche morphologische Verhältnisse und weisen nur 

 Farbenvariationen auf! 



167. Centris eiseni Fox. 



1894. Centris eisenii Fox, 9, P. Calif. Ac, IV, pag. 22. 



»§. Black; a transverse mark on anterior part of clypeus, from the middle of 

 which there extends a line nearly to the base of clvpeus, sides of face, labrum and spot 

 at base of mandibles, whitish-yellow; flagellum beneath except first Joint, testaceous; 

 front and cheeks clothed with whitish pubescence, that on the vertex a very dark brown; 

 dorsulum and scutellum with a brownish-yellow pubescence, darkest on anterior part 

 of dorsulum; the thorax on sides and beneath with pubescence similar to that on the 

 cheeks; the four anterior legs clothed with a short brown pubescence in front, behind 

 with long whitish pubescence; scopa of posterior legs darker than the pubescence on 

 sides of thorax and much paler than that on the dorsulum; abdomen above sparsely 

 clothed with a short black pubescence, the second, third, fourth and fifth segments with 

 a broad, bright yellow band; ventrally the abdomen on the sides is fulvous, the middle 

 part black, segments two to five with a fringe of long, white pubescence; wings sub- 

 hyaline, nervures and stigma black; clypeus strongly and sparsely punctured; labrum 

 densely clothed with pale pubescence, which is longest anteriorly. Long. 16 — 20 mm. 



»Guaymas, Mexico (Eisen). May. Resembles very much and is related to Centris 

 fasciata Smith, from Jamaica, but is distinct in having the pygidium larger, the pube- 

 scence on thorax darker and the scape is entirely black.« 



168. Centris picta Sm. 



1874. Centris picta Smith, 9, Ann. and Mag. Nat. Hist. (4), XIII, pag. 372, n. 84. 



»(^. Black, variegated with yellow spots an fasciae. Head: labrum, sides of the 

 face as high as the Insertion of the antennae, a spot at each lateral anterior angle of the 

 clypeus and a minute spot at the base of each mandible yellow; the cheeks have a thin 



