80 



PRELIMINARY LIST 



spots on either side near anterior edge, nearer to the compound eyes than to the median 

 line. 



Length of female 6 mm., of male 5 mm. Described from three females and two males. 

 Readily distinguished from pallidus by the two black spots on the vertex. 



Idiocerus rufus n. sp. 



Female: Face one-fifth wider than long, finely shagreened; clypeus little less than 

 one-half longer than broad, broadened towards 

 the rounded tip; lorae a little longer and 

 nearly as broad as the clypeus; genae slightly 

 depressed beneath the eyes, the lateral margins 

 almost straight, attaining the tip of the clypeus, 

 broad beneath the lorae; front about one-fifth 

 longer than broad and twice the length of the cly- 

 peus. Vertex finely transversely wrinkled, length 

 at the middle the same as at the eyes, width between 

 the eyes nearly four times the length at the middle. 

 Pronotum finely transversely shagreened, with 

 numerous shallow, scattered punctures, slightly 

 more than twice as broad as long, two and one-half 

 times as long as the vertex, curvature slightly less 

 than three- fifths of the length. Scutellum finely 

 shagreened, transverse groove as in interruptus. 

 Last ventral segment with hind margin broadly 

 rounded, with a narrow median notch. Color bright 

 chestnut, with the face, three small spots either 

 side of the pronotum, a few spots on the scutellum, 

 venter and all below, except the pygofers and some- 

 times the legs light yellowish. 



Length 5 mm. Described from two females. 

 Form of alternatus. 



RiF-t Canon, September 27th on 

 Soliclago; Maniton, September 29th 

 on oak (Gillette) . 



Colorado Springs, August (Tucker) 



Idiocems suturalis Fitch, 



Det. VanDuzee. 



Colorado (VanDuzee, 4). 



Spring Canon, June 30th; Estes Park, July 12th; Steam- 

 boat Springs, July 26th (Gillette). Steamboat Springs, July 

 12th (Baker) . Manitou, July (Tucker). 

 Idiocems verticis Say. 



Upon willows at Denver, August 9th to 18th (Uhler, 5). Colorado (Van- 

 Duzee, 4). 



Estes Park, July 12th (Gillette). 



Agallia novella Say. 



Colorado (VanDuzee, 4). 



Agallia 4-pnnctata Prov. Det. Gillette. 



Fort Collins, June 4th to 14th (Gillette). 



