104 HYMENOPTERA OF AMERICA. [PART I. 



Var. The whole insect covered with fulvous woolly pubes- 

 cence. Thorax and petiole rufous ; second abd. segment fulvous 

 with a transverse black band produced to the base, separating 

 on each side a yellow macula, Wings obscure, with rufous costa. 



Bess. a. cliff. — This species sometimes offers a resemblance to 

 the E. globulosus Sauss , which also has the markings yellow 

 .rather than whitish and which is covered with ferruginous hair; 

 but it differs essentially from it in its compressed abdomen, in its 

 petiole, narrow, elongate-pyriforra, not campanulate in the middle ; 

 in its antennae ferruginous at the base, etc. It is quite approxi- 

 mate to E. Smithii, but smaller; the petiole more slender; the 

 metathorax more triangular ; the punctuation of the body not so 

 strong. 



Hab. The hot regions of Mexico. I have taken it in the 

 valley of Mextitlan between Mexico and Tampico. • 



4f. E. Smitllii Sacss. — Ferrugineus, corpore crasse et densissime 

 punctato, etiam iu abd. secundo-segmento ; antnnnis ferrugineis ; 

 vertice, mesonoti disco et petioli basi, nigris; post.se ntello, pronoto et 

 abd. segmentoruui V, 2" 1 , limbo flavis ; secundo segmeuto l'usco, fascia 

 transversa rufa vel aurantiaca. 



% . Clypeo argenteo. 



Var. Niger, rufo et flavo varius. 



Eumenes Sinithii Sauss. Vespides, I, 43, 21 ; pi. x, fig. 1 (1852). 

 Total length, 18 mm. ; wing, 11 mm. 



$. Of moderate size. In size and in form, resembling E. 

 fraternus. Prothorax slightly retracted before ; petiole a little 

 longer than in the species cited. Abdomen compressed. The 

 whole insect densely cribrose with strong punctures ; the second 

 segment of the abdomen a little less coarsely so, but yet strongly 

 cribrose. All the body clothed with a grayish pile. Clypeus 

 black, satin-like, notched. Head black; mandibles and antennaa 

 ferruginous; these last obscure above; margin of the eyes and 

 a spot on the front often ferruginous. Thorax red, with the 

 sutures black; the mesothorax at times black with two red stripes 

 and something of black on the flanks and in the furrow of the 

 metathorax. Border of the prothorax, of the wing scale, and the 

 post-scutel often yellow; abdomen black, segments 1, 2 bordered 

 with a yellow cordon ; the second marked with a red transverse 

 band ; the other segments red, shaded with black at their base. 



