218 P, CAMERON. 



the mark over the autenn?e is longer and dilated above; except that 

 tliere is no yellow spot on the niesonotum and two on the underside 

 of the second abdominal segment, the markings are as in the 9 ; but 

 the yellow line on the lower side of the eye orbits goes all round it. 

 Clypeus pyriform, longer than wide, it apex transverse. Underside 

 of flagellum brown; the hook of a darker brown color; it reaches 

 to the middle of the penultimate joint. The basal half of the sec- 

 ond femora is hollowed slightly and roundly dilated behind. The 

 yellow marks on the pronotum are of equal width, square, not trian- 

 gular as in the 9 ; the black on the femora is less developed ; the 

 oblique mark on the first abdominal segment is more narrowed on 

 the innerside and the mark on the second is larger and more regu- 

 larly oval. 



Related closely to A. philetas Cam., from Texas, which may be 

 known from it by the second abdominal segment being distinctly 

 longer than wide; while in truncatus it is fully wider than long, the 

 mark on the pronotum on the latter is triangular in jjhiletua, not 

 much narrowed on the outerside, the line on the clypeus is much 

 narrower; the clypeus itself, too, being broader compared with the 

 length ; also the black on the femora is longer. 



/ 

 Ancistrocerus orinsbyensis n. sp. 



The % of this species was described in " Invert. Pacif.," i, 120. 

 The 9 ii^s been taken at Gunnison, Col. Like the % it is densely 

 pilose; it has the clypeus yellow, with a broad black mark in the 

 centre of the upper two thirds ; the upper two- thirds of the clypeus 

 is of equal width, the lower is gradually narrowed to a point; it is 

 slightly longer than its greatest width ; it is sparsely longitudinally 

 punctured ; its apex is black and transverse. The basal five seg- 

 ments of the abdomen have moderately broad yellow bands of equal 

 width ; the four front femoz"a are more broadly black than in the 

 9 . As in the % , the wings are largely tinged with fulvous. 

 There is a S from Denver, Col., which has the black lines on the 

 four anterior femora shorter than in the type. 



AncistroceriiM leeoiitei sp. nov. 

 Black ; the head, thorax and base of abdomen densely covered with long dark 

 pubescence ; two broad curved marks on the top of the clypeus, two much smaller 

 marks, transverse on the outer, rounded on the inner side, above the apex, a 

 small transverse mark over the antennae, a small spot behind the top of the eyes, 

 a line on the pronotum, narrow in the middle, -broadly dilated laterally, an 



