ON NEW AND LITTLE-KNOWN HYMENOPTERA. 373 
distinctly approaching at the vertex, front slightly concave and 
having a short deep impressed line leading from the anterior 
ocellus to the base of the antenne, the space between the two 
posterior ocelli equal to the space between either and the nearest 
orbit, but greater than that between them and the anterior ocellus; - 
head posteriorly slightly hollowed out. Thorax ferruginous-red, the 
pubescence on the pro- and mesothorax, the tegule, the scutellum, 
proscutellum, coxee, trochanters, and the outside of the tibice and tarsi 
rich glistening golden-ferruginous, the mesothorax and femora red- 
dish without pubescence ; the pronotum square in front, the shoulders 
projecting, its posterior margin arched ; the mesonotum slightly convex, 
bearing a longitudinally impressed line on either side ; the metanotum 
transversely striated, rounded, gently sloping to the apex, its sides 
bulging, the side tubercles and stigmata well marked and prominent ; 
the wings deep reddish-yellow, paling towards the margins, which are 
broadly but very lightly infuscated, the nervures ferruginous ; the 
transverse medial nervure of the front wing and the cubital nervure of 
the hind wing both arise respectively well before the apex of the Ist 
sub-medial cell in the one case and the apex of the anal cell in 
the other case, the Ist recurrent nervure unites with the 2nd trans- 
verse cubital nervure (interstitial), the latter being angled just 
above the apex of the 2nd cubital cell ; the 2nd recurrent nervure is 
received in the 3rd cubital cell at a point about 4rd the length of the 
base from its inner angle ; a clear hyaline spot at the inner angle of 
the Ist discoidal cell ; legs long, the tibice and tarsi of the intermediate 
and posterior legs strongly spined, the former grooved with a serrated 
angular edge, the claws toothed, abdomen black obscurely puniose, 
the 3rd segment having a transverse impressed mark, the anal seg- 
ment studded with a few fuscous hairs, 
The ¢ resemblesthe 9, but is slighter and smaller ; the antennez are 
arched slightly, not convolute, and subfusiform ; the legs are less spinous, 
and the abdomen somewhat compressed. vertically. 
This insect, though closely resembling S. aureosericea, Guérin, cannot 
be that species, of which Guérin says: “ L’abdomen est d’un noir 
obscur avec les deux derniers segments garnis d’un duvet doré.” 
It is not uncommon here in the dense forests on the higher ranges 
at from 1,000 to 4,000 ft. elevation, In May I chanced on one, a 9 , 
