420 Dr. A. S. Packard, Jr's Revision of the 



polished, a yellow clot on the scutellura and meta-scutellum 5 propo- 

 deuni with the enclosure polished ; flanks pubescent below the lateral 

 ridge; two anterior pair of femora slightly tipped with yellow; tibia) 

 yellow, with a broad brown stripe above. Fore tarsi yellow, middle 

 and hind tarsi darker. Abdomen entirely black, with two remote ovate 

 yellow spots on the 3d segment, tip broad, equilaterally triangular, 

 extreme tip truncate, sides ridged. 



Length, .32 inch. 



Dublin, N. H., Leonard, (Harr. Coll.), Brunswick, Me. Rather 

 rare. 



Easily known by its black head, pale tipped antennas, and the two 

 ovate yellow spots on the abdomen. It is smaller and dull colored, 

 compared with the succeeding species. 



Mellinus rufinodus. Cresson. 



M. rufinodus, Cress., Proc. iv., p. 475. (1S65). 

 Colorado Territory, (Ridings, Coll. Ent. Soc v Phil.). 



ALYSON, Jurine. 



Ali/son, Jurine, Hym., p. 196. (1S07). 



% . Head transverse, short and broad, sides not retreating posteriorly 

 so rapidly as in Mellinus; eyes not at all excavated, orbits being straight; 

 ocelli placed more on the vertex, being more posterior than Mellinus; 

 front rather flat, sides converging slightly, mesial line well impressed ; 

 clypeus large, short, very broad, with long sparse setose hairs, surface 

 moderately convex ; labrum slightly exserted, small, narrow, oblong ; 

 joints of the palpi long and slender, cylindrical; antenna) subfiliform, 

 very slightly thickening in the middle, terminal joint long, pinched in 

 in the middle. Prothorax elongated, unusually narrow, meso-scutum 

 very short, scutellum narrow and long, nearly square ; meta-scutellum 

 a little longer than in Mellinus; tubercle very prominent, and middle 

 flanks, especially, very prominent and convex. Propodeuni greatly 

 elongated ; enclosure narrow and very long, a third longer than broad 

 at base, with three series of transverse rugae separated by two longi- 

 tudinal ridges bounding the mesial furrow, the propodeum above 

 spreading out far on each side to the lateral ridge, posteriorly rounded, 

 but not narrowing; fossulets much enlarged towards the insertion of 

 the abdomen, wings with the pterostigma much enlarged; the 3d costal 

 cell very triangular, short; 2d sub-costal cell minute, appendiculate 

 anteriorly, 3d sub-costal cell very short, narrowing anteriorly; all the 

 cells broader and shorter than in Mellinus, as the wing is much shorter 

 and the outer edge straighter. Legs very long and slender, tarsi 



