80 IIYMENOPTERA OF AMERICA. [PART I. 



This species has not been sufficiently well described. 



9 . Clypeus flattened, polished ; its apex carinated into two very 

 acute teeth, separated by a shallow notch. Thorax globular, 

 polished, square anteriorly, with its angles insensibly raised, 

 Metathorax very delicately punctured, parted by a channel. 

 Abdomen polished, much depressed ; the second half of the 

 petiole rather wide, although swelled above; the hind margin of 

 the second segment straight ; not sinuous. 



Insect black, with an argenteous reflection. Antenna? slender, 

 ferruginous below at the apex; frequently a yellow line on the 

 scape. A spot on the forehead and in the sinus of the eyes, 

 yellow. A narrow interrupted line on the anterior border of the 

 prothorax, a line on the posterior margin, a spot before the wing, 

 two dots on the anterior angles of the scutellum, a band on the 

 post-scutellum, and two lines on the metathorax, yellow ; the 

 margin of the first two abdominal segments also bordered with a 

 yellow line; that of the petiole smelted with two lateral spots; 

 the lamellar borders of segments 2d and following, rufo-testace- 

 ous ; this color preceded by a fine yellow line. Coxae and tibiae 

 ornamented with yellow. Wings cloudy, with golden reflection. 



Hess. a. cliff. — This species approaches very much to E. calli- 

 morpha, but its abdomen is much depressed; the petiole not so 

 long, more dilated ; the clypeus less notched. The thorax, 

 although more polished, has just the same form. In its appear- 

 ance this Eumenes quite resembles E. mexicanus, but it is larger, 

 the clypeus is more ovoid, not so pyriform ; the body is not 

 punctured, and the thorax is a little longer than wide. In its 

 depressed abdomen and its impunctured body, it quite resembles 

 E. Santa-Anna, but it is more slender, less depressed ; the thorax 

 has another appearance, etc. Nevertheless, it annoys me much 

 to separate E. laeuis from E. Sanla-Anna, but the first seems to 

 be a smaller Brazilian representative of the last. 



Ilab. Brazil; Para. (The type in the collection of Spinola, 

 Turin mas., and in the author's collection.) 



Observation. — The Fabrician synonym is very doubtful ; I first 

 adopted it according to the collection of Spinola, but the descrip- 

 tion given by Fabr. does not fit our insect, which, as we think, 

 must be considered a different one. 



