THE CANADIAN ENTOMOLOGIST. 211 



Vertex convex in both diameters, rounding to the large inflated front, 

 with a sHght conical projection at apex. But little longer on middle than 

 against eye. Front full, very broad at base, narrowing down to the 

 parallel margined clypeus. Its length and breadth about equal. Elytra 

 broad, compressed behind, venation obscure, resembling that of Vanduzei, 

 but with the apical cells short. 



Colour : vertex pale yellow in female, with a pair o*f round spots at 

 base, and a small pair just back of apex black. The black on the 

 rounding front is visible on either side the apex. In the male there is an 

 arch of irregular dots connecting the basal spots, two or three dots inside 

 the ocelli, and the frontal markings extend up to the apical spots. Front 

 black at base, with faint, light arcs ; below the antenna; it is pale yellow, 

 with about five short brown arcs on either side. Pronotum and 

 scutellum pale dirty yellow, more or less inscribed with fuscous. Elytra 

 pale, with the nervures and the few scattered inscriptions brown ; an 

 interrupted black stripe starts beneath the margin of the pronotum, 

 extends back just under the claval suture to the first cross nervure, and 

 gradually fades out. This is especially marked on both sides of the first 

 cross nervure, while the rest of these cells and the fork of tlie outer sector 

 are milk white. 



Genitalia : female segment wanting, or appearing as a pair of widely 

 separated rectangular plates, a pair of roundingly pointed plates overlap 

 these on their inner margins, leaving the median fourth exposed. Male 

 valve rounding, with the apex bluntly produced ; plates together nearly 

 semicircular, with the apices bent up and slightly produced. 



Described from a pair from the collection of the U. S. Nat. Museum, 

 taken at Hot Springs, Ark., by Schwarz and Barber. 



Pa?-amesus immaadatiis, n. sp. — Form of Coloradensis nearly, but 

 smaller, and with a shorter, blunter-margined vertex. Pale tawny, with 

 faint markings. Length, 9 4-5 mm., $ 3-5-4 mm.; width, r.75 mm. 



Vertex flat, very slightly sloping, anterior margin in a regular curve, 

 about one-fourth longer on middle than against eye, anterior margin 

 distinct, slightly acutely angulate, but not as sharply marked as in the 

 other members of this genus. Front broader and shorter than in 

 Coloradensis or in Twiningi. Elytra broad, rather short, venation as in 

 Twiningi, but less distinctly marked. 



Colour : vertex of a uniform pale tawny, sometimes with a faint sub- 

 marginal line. Face pale creamy yellow, slightly washed with brown, 

 Pronotum pale tawny, with more or less of a cinereous cast on disc. 



