T. D. A. COCKERELL 29 



specimen determined as nigroacnea by Schrottk}- is very similar 

 to T. bruneri, dlficnngfhowever, b}^ the shorter face, the light hair 

 of mesopleiira, and the deeper marginal cell. Neither T. hrunen 

 nor the Schrottky specimen agree with Smith's description of M. 

 lugroaenea from Brazil, though that description does suggest a 

 Thygater. Ecpledica tintinnans Ilolmberg, which has been 

 regarded as a synonj-m of M. nigroaenea, has the maxillary palpi 

 four-jointed, the second joint much longer than the third. 

 Bruner's 64, 29 and 89 I regard as M. nigroaenea tintinnans; it is 

 (|aite distinct from T. hruneri. 



Thygater pygialis (Buj^sson) 



Males from Colombia (Baker collection). It was described 

 from Venezuela. The flagellum is black, and the thoracic 

 dorsum has the hair mainly pale fulvous or whitish, but blackish 

 or grey anteriorly. The yellow hair on apical part of abdomen 

 shines golden. 



Temnosoma smaragdinum Smith 



Cordoba," Vera Cruz, Mexico, Jan. 20. (F. Knab.) 

 Anthophora paranensis Holmberg 



Carcarana, Argentina (L. Bruner 11). 

 Centris nigriventris Buiineistcr 



Carcaraiia, Argentina (Bruner 7). 

 Xylocopa melanura new species 



Feiiialc. Robust, l)lack, with black pubescence; outer side of niiddle and 

 hind tarsi, and apex of hind tibiae, with cream-colored hair; wings brown, only 

 moderately dark, scarcely metaUic; second recurrent nervure joining third 

 submarginal cell not far from base; length of anterior wing, 13.5 mm.; an- 

 tennae dark; clypeus closely and strongly punctured; abdomen witb a weak 

 median carina beneath. 



Mexico (no other particulars known). I do not dcscrilie this 

 more fully, as it has the structure of A^. tabanifornus Smith, of 

 which it is perhaps only a local race. It is easily distinguished 

 from tabaniformis by the absence of light hair-bands on the 

 abdomen. It looks like a large Anthophorid. 



Melissodes bimaculata morrilli new subspecies 



Female. Differs from M. bimaculula by having the broad depressed apical 

 parts of second and third abdominal segments dullish (not polished), with 

 very minute and remote punctures; tegulae with a ferruginous sjiot posteriorly. 



TRANS. AM. ENT. SOC, XLIV. 



