120 HYMENOPTERA OF AMERICA. [PART I. 



capite. mesonoto, abdominis Begmentis 20-70^ nigris ; pedibus, pronoto. 



scutellis tegulis et pleuris, metanoto et abdominis 1° segraeuto, rufis, 



anreo-velutinis ; frequenter pronoti margine postico, tegulis parti m, 



metanoti maculis 2 et canthis, primique segmeuti margiue, flavis ; alis 



fasco-violascentibus, costa nigra, apice pallidiore. 

 £ . Clypeo punctulato po'ygonali, fere latiore quam longiore, late exciso ; 



macula gen arum flava ; antennarum unciuo et scapo subtus, ferrugineis. 

 . Variat. a. Clypeo flavo-maculato. 



I. Abdomine oinnino nigrescente, apice fere ferrugineo. 

 c. Mesonoti disco ferrugineo-bilineato j 1^ abd. segmento fascia flava 



iuterrupta. 



Montezumia Spinolce Sauss. Et. Yesp. I, 93, 12; pi. xii, fig. 9. 9 var - 



(1852). 

 Odynerus infernaJis Spinola, Mem. Acad. Turin, XIII, 1T53, 84, 64, £ . 

 Montezumia infernalis Sauss. Et. Yespides, III, 162, 52. 



Total length, 16-18 mm ; wing, 14-15 mm. 



Strongly and densely punctured. Front a. little channelled 

 transversely above the antennae, vertex a little swelled behind in 

 a transverse pad. Prothorax angulate, truncate before, following 

 a slightly concave trenchant line. Clypeus and post-scutel 

 divided by a groove. Metathorax short, vertically wide, rugose, 

 punctured and velvety ; its concavity almost in the form of an 

 angle, plane, a little bordered at summit. First abdominal seg- 

 ment campanular subsessile, finely punctured, with a groove 

 above toward the extremity. The 2d segment notably more 

 enlarged, with scarce punctures clothed with a velvety pile, as if 

 striolate. The other segments densely and finely punctured. 



Black; labrum very long, ferruginous; a little yellow line bor- 

 dering the eyes below and another upon the scape of the antenna?, 

 %. Thorax of a velvety ferruginous; disk of the mesothorax 

 black ; prothorax and flanks brownish, with the borders of the 

 first and some spots on the second reddish ; wing scales spotted 

 with yellow; post-scutel adorned with a yellow line; metathorax 

 having some silky golden-yellow reflections and two yellow spots 

 upon the summit. First segment red, with a yellow border. 

 Legs ferruginous, with golden reflections. Wings of a black 

 violaceous, with the extremity more pale. (Surinam.) 



The color of the thorax varies very much, from ferruginous to 

 obscure brownish. The border of prothorax and the sides of the 

 thorax under the wing, ornamented with yellow. 





