162 E. T. CRESSON. 



trochanters beneath, their knees, tibiae and tarsi, anterior femora in front, pos- 

 terior tibise and tarsi except tips, sometimes two dots or a line at tip of first 

 abdominal segment, and the second and third more or less, all bright yellow ; 

 occasionally the base of second and third segments is margined with dull 

 ferruginous, and the apical middle more or less varied with black, sometimes 

 interrupting the yellow on third segment into two spots and in one specimen 

 these are reduced to mere dots and the yellow on second segment interrupted 

 medially by a black line; wings subhyaline; postpetiole aciculated ; gastrocoeli 

 large and deep; antennfe more or less pale beneath; posterior femora some- 

 times pale at base. Length .45 — .55 inch. 



Hah. — Can., Me., N. Y., Va. This is quite a variable species, 

 closely allied to comes which however has a more finely sculptured 

 abdomen. 



85. comes, Cress. Proc. Ent. Soc. Phil, iii, p. 158, % ; Trans. Am. 



f^nt. Sec. i, p. 301. 

 Hab.— Can., Me., N. H., Mass., N. Y., Pa., Va., 111. This is au 

 extremely variable species but easily recdgnized by the yellow second 

 and third abdominal segments, which are more or less black at apex ; 

 in some specimens the third segment is entirely yellow, and the black 

 band on second segment very broad ; the postpetiole is always black, 

 rarely with a yellow dot on each side at tip ; in the variety aleatorius 

 the fourth segment has an interrupted yellow band at base. The 

 metathorax varies from almost entirely yellow to entirely black; the 

 scutellum is calways yellow and the legs quite constant in coloration ; 

 the mesothorax has sometimes a spot or two short yellow lines on the 

 disc and in one specimen two entire stripes. Some specimens have 

 fuscous wings, these will probably prove to be varieties of Bronteus, 

 and a large series of specimens is required to decide whether or not 

 they are both one and the same species. Lengths .50 — .65 inch. * 



86. trizonatus, Prov. Nat. Can. ix, p. 8, % . 



Hah. — Canada. This species has a broad yellow band at apex of 

 the three basal segments of the abdomen. It closely resembles comes, 

 but the postpetiole is broader, the gastrocoeli are larger and deeper, 

 and the colors on second and third segments are reversed, i. e., black 

 at base and yellow at apex. Length S .55 inch. 



87. munificus, Cress. 



nohilis, Cress, (nee Wesm.), Proc. Ent. Soc. Phil, iii, p. 155, S . 

 Hah. — N. Y., 111. This fine species has the appearance of a large 

 fat specimen of Ixtus which it resembles in color and markings. 

 Length % ,65 — .75 inch. 



