Sept.-Dec, I920.] Dawson : New Species OF Serica. 211 



tures, coalcsccnt to separated by two thirds of their own diameters ; a few 

 coarser punctures anteriorly, at the edge of the less strongly and densely punc- 

 tate submarginal impression. Clypeal margin moderately and rather suddenly 

 reflexed, somewhat emphasized by the submarginal impression. Reflexcd 

 margin broadly and distinctly sinuate anteriorly ; the usual lateral incisures 

 entirely wanting. Front finely, sparsely and irregularly punctate, becoming 

 impunctate toward the occiput ; separated from the clypeus by a fine, almost 

 evenly arcuate suture. Planes of front and clypeus more or less deflected to 

 the suture, thus forming a diffused, transverse facial depression, usually less 

 distinct medially but always clearly marked at the sides in front of the eyes. 

 Antennal club small and short, about equalling the length of joints 2 to 6 

 inclusive. Eyes small. Measurements of head as follows: Diameter of head 

 through eyes, 22; distance between inner eye margins, 16; length of head on 

 median line, 20 ; extreme width of clypeus in front of the position where the 

 incisure occurs in many species, 13; antennal club, 6; dorso-vcntral diameter 

 of eye, 7. 



Pronotum rather strongly convex from side to side, the lateral margins 

 evenly and distinctly arcuate, and the hind angles very obtusely and evenly 

 rounded. Puncturation inconspicuous, rather fine and shallow, but closely and 

 evenly distributed, the punctures separated on the average by about twice 

 their own diameters. Sides of pronotum with a small, inconspicuous, though 

 distinct, piceous spot at the middle near the margin. Measurements of pro- 

 notum as follows : Greatest width, a little in front of the very round posterior 

 angles, 35 ; width through the anterior angles, 22 : length on the median line, 

 19. Scutellum rather densely, but very finely and inconspicuously punctate; 

 length, 9 ; width, 9. 



Elytra feebly striate, the striie line-like, each bearing a single, somewhat 

 irregular row of fine punctures. Intervals with a few small, scattered punc- 

 tures, feebly convex, the second, fourth and sixth slightly wider than the 

 others. Elytral punctures bearing inconspicuous, short, erect, yellow hairs. 

 Length of elytra, 60 ; width, 45. 



Metasternum and posterior coxal plates more strongly punctured than the 

 upper surface, but punctures still relatively small, separated by one to three 

 times their own diameters. Abdominal sternites with the usual, single, irreg- 

 ular rows of rather conspicuous, setigerous punctures, and at the sides with a 

 few small hair-bearing punctures. Coxae and femora of front and middle legs, 

 and nieso- and meta-sternum moderately clothed with erect, yellow hairs. 



Length of genital armature of male (Plate XIII), 2.6 mm. 

 $. — DitTers from the male only in the slightly smaller antennae (club 5 

 instead of 6 as in the male) and broader and less eniarginate last abdominal 

 sternite. 



Type: cJ". Bellcvue, Utah, 3,400 ft., June 21-23, 1919 (^V. Knaus). 



Allotype: $. Bellevue, Utah. 3,400 ft., June 21-23, 1919 ( \V. Knaus). 



Paratypes: 15 d*. 7 ?• 



