G. C. DAVIS. 



201 



Twt) females and seven males. The type echvardsii is from Wash- 

 ington, the others are all fron} Nevada. This is scarcely more than 

 a distinct variety (coll. Amer. Ent. Soc). 



Ifletopiiis robustus Cress., Proc. Eut. Sec. A. N. S., 1879. xxvii. 



9 . — 18 mm. Piceous, witli broad margins on facial shield, scape beneath, stripe 

 beneath tegulte. large spot on upper niesopleura, large and small spot above each 

 hind coxa; scutellums, spot above on posterior coxse, posterior trochanters and 

 apex of femora beneath, nearly all of basal segment of abdomen, apical margin 

 of segments 2 5, much broader on 3 and 4, yellow; wings fuliginous; antenna 

 piceous, tapering gradually to a point at apex. 



Type from Maryland (coll. Amer. Ent. Soc). 



9IetopiuS coniptlis Cress., Proc. Ent. Sec. A. N. S., 1879, xxviii. 

 31. laticincfus Cress., ibid. xxix. 



'J, J. — 13-14 mm. Head, thorax and apex of abdomen black, with lemon- 

 yellow markings as follows : facial shield, except central line, anterior orbits, 

 scape beneath, mandibles, labrum, palpi, broad line in front and another beneath 

 tegulse. apical half of scutellum, large and small dot above hind coxte, four ante- 

 rior legs, trochanters and base of tarsi on posterior legs, apical corners of basal 

 segment of abdomen, apical half or three-fourths of segments 2 and 3 and more 

 or less of the following enlarged on the sides; the legs, basal portion of abdomen, 

 metathorax, tegulse and antennae are variable dusky rufous ; wings fuscous, 

 darker at apex; carinte distinct on basal segment of abdomen, converging at apex 

 and continuing in a more or less distinct tuberculate carina on the next four 

 segments; facial shield with raised margin. 



Four female specimens and one male from Colorado (type coll. 

 Amer. Ent. Soc). 



Metopius scitiilus Cress., Proc. Ent. Sec. A. N. S., 1879, xxix. 



%. — 9 mm. Black, with the following yellow markings : margins of shield, 

 anterior orbits, scape beneath, palpi, broad line in front and another beneath 

 tegulffi, large and small spot above hind coxse ; scutellum, four anterior legs, ex- 

 cept middle of femora and base of coxse, hind legs except coxse. most of femora 

 and apex of tibige and tarsi, apical corners of first segment of abdomen and the 

 following segments with apical margin, broadest on sides ; antennse rufous. Witigs 

 dusky yellow, stigma fulvous: facial shield concave vertically. 



Type from Nevada (coll. Amer. Ent. Soc). This is probably only 

 a variety of comptus. 



]VIelopiii»$ bellus Cress., Proc. Ent. Sec. A. N. S., 1879. xxviii. 



'^ . — 16 mm. Black, with entire face, mouth, scape beneath, tegulfe, line in 

 front, large spot beneath on pleura; scutellums. triangular spot on each side of 

 metanotum ; legs, except part of hind coxse and upper part of hind femora, fii-st 

 segment of abdomen except base, lateral margins of segment two, lateral margins 

 of thi7-d continuing nearly across the apical margin, segments 3 6, except extreme 

 base and black dots at sides of each, pale yellow: wings yellowish hyaline; 

 antennae fulvous; abdominal segments 3-5 with distinct central carina. 



Type from Nevada (coll. Amer. Ent. Soc). 



TKANS. AM. ENT. SOC. XXIV. (26) AUGUST, 1897. 



