Monographie der Bienengattungen Exomalopsis, Ptilothrix, Melitoma und Tetrapedia. 255 



6. Exomalopsis fulvescens Sm. 



1879. Exomalopsis fulvescens Smith, 5, Descr. New Spec. Hymen., pag. 127, Nr. 8. 



»9. Length 4 lines. Black, with the antennae and legs ferruginous; the front above 

 thc antennae with fulvous pubescence, below the antennae it is cinereous, at it is also 

 on the cheeks. Thorax with fulvous pubescence above, paler on the sides, and whitish 

 bencath; wings pale flavo-hyaline, the nervures pale testaceous, the tegulae rufo-testa- 

 ceous; the scopa on the posterior legs pale fulvous, with a mixture of fuscous above. 

 Abdomen with a short changeable fulvous tomentum, the apical margins of the Seg- 

 ments with bright fulvous fasciae (8^/2 Mm. lang), 



»Mexico, Oajaca.« 



cT. Dem Weibchen ähnlich, aber schlanker, Mesonotum wie beim 5 grob und 

 ziemlich dicht punktirt; Analsegment (7) wie der Bauch rothgelb gefärbt. An den 

 schwarzen Beinen sind alle Tarsen rothgelb, die Hinterbeine lang schwarzbraun be- 

 haart; hierdurch und durch die Grösse leicht von penelope <^ zu unterscheiden. 7^/2 bis 

 8 Mm. lang, 3 Mm. breit. 



Exomalopsis fulvescens liegt mir in i 9 in der Coli. Saussure von Mexico 

 (Meztill) vor, i cf erhielt ich von Orizaba (Krieger). 



7. Exomalopsis fulvofasciata Sm. 



187g. Exomalopsis fulvofasciata Smith, 5, Descr. New Spec. Hymen., pag. 127, Nr. 7. 



»5. Length 3^/2 lines. Black; the face with pale fulvous pubescence, the clypeus 

 with scattered punctures; the flagellum fulvous beneath. The mesothorax finely and 

 closely punctured; the margin of the prothorax, the scutellum and postscutellum with 

 fulvous pubescence; beneath, the pubescence is white; wings subhyaline, the nervures 

 fusco-ferruginous, the tegulae rufo-piceous; the scopa on the posterior legs black above 

 and white beneath. The basal segment of the abdomen with thin pale pubescence; the 

 basal margin of the second segment with a narrow fascia of fulvous pubescence; 

 a broad fascia of fulvous pubescence in the middle of the third, and the fourth and 

 fifth covered with the same; on the sixth the pubescence is black (=='j'^/^ mm.). 



»Bahia (Brasilia).« 



8. Exomalopsis mexicana Cress. 



1878. Exomalopsis Mexicana Cresson, 9, Trans. Amer. Entom. See, VII, pag. i33. 



»9. Black, shining; head, thorax and legs clothed with a griseous pubescence, 

 long and erect on occiput, that on the vertex, mesothorax and scutellum mostly black; 

 sides of face, Hne on collar, line behind tubercles and line behind scutellum of dense 

 pale ochraceous or whitish pubescence; flagellum fulvo-testaceous beneath; tegulae 

 piceous; wings hyaline, dusky on apical margin, second submarginal cell receiving the 

 recurrent nervure very near the tip; posterior tibiae and tarsi with a dense floccus of 

 ochraceous pubescence, that on tarsi above sooty-black; abdomen smooth 

 and shining, the base and extreme sides thinly clothed with pale pubescence, base of 

 Segments three and four with a band of dense appressed pale ochraceous or white 

 pubescence, sometimes narrowed medially, the fifth segment fringed with long ochra- 

 ceous pubescence; sometimes the second segment has an oblique line of pale pubes- 

 cence on each side; ventral segments fringed with long griseous hair. Length 35 inch. 

 {= g Mm. lang). 



»Mexico (Sumichrast), 39.« 



Annalen des k. k. naturhistorischen Hofmuscums, Bd. XIV, Heft 3, 1899. 19 



