Dec, 1922.] Dawson: New Species of Serica. 163 



ing distinctly though not strongly depressed just below the clypeal suture 

 and before the anterior reflexed margin, and less so toward the sides ; 

 anterior and lateral margins less atrong-ly and suddenly elevated than 

 usual in the genus, and clypeal incisure poorly developed to obsolete ; 

 viewed perpendicularly the anterior elevated margin broadly and evenly 

 curved at the middle, viewed at an angle from above straight ; punctura- 

 tion relatively coarse and much crowded, the punctures separated by about 

 one third of their own diameter. Front with the punctures slightly coarser 

 and less closely crowded; occipital region impunctate. Measurements of 

 head: diameter of head through eyes, 16.5; distance between inner eye 

 margins, 11; length of head on median line, 15; extreme width of anterior 

 reflexed margin, 9 ; antennal club, 6 ; dorso-ventral diameter of eye, 5.3. 



Pronotum but slightly convex, sides distinctly margined, only moderately 

 arcuate and convergent from base to apex ; surface rather strongly, closely 

 and evenly punctured, the punctures a little more crowded toward the sides, 

 but separated on the average by about their own diameters. Measurements 

 of pronotum : width through posterior angles, 28.5 ; width through anterior 

 angles, 17.6; length on median line, 16. 



Elytra with the striae shallow but distinctly lined, and each with three 

 irregular rows of coarse punctures, confluent to separated by their own 

 diameters, and encroaching upon the interspaces to their crests. Length 

 of elytra, 5 mm. ; greatest width, 3.75 mm. 



Posterior coxal plates and sides of metasternum with moderately strong 

 punctures, separated on the average by about their own diameters. Ab- 

 dominal sternites, except the last, with fine, sparsely and irregularly placed 

 punctures, and with the rows of ambulatorial setae poorly developed; last 

 stemite closely punctured. 



The genital armature of the male (PI. XIX) measures 1.7 mm. and is 

 strongly characterized by its relatively thick, inflated basal portion and 

 long, attenuated claspers. 



9. Differs from the male only by the usual secondary sexual characters, 

 none of which are strongly marked. 



Type: (^. Camp Baldy, San Bernardino Co.. California, June 14, 1917 

 (L. L. Muchmore). 



Allotype: $. Mt. Wilson. California, June 18, 1903. 



Paratypes : j ,$, 7 $. 



California: " Cal.," Horn Collection, i^; Claremont, 2^, 4 J; Ojai 

 Valley, 2^, 2 $ ; Mt. Wilson, 2^. i $. 



Serica solita new species. 



^. Length, 8.2 mm. ; width, 4.2 mm. Color dark auburn, subopaque. 

 with traces of a metallic iridescence when viewed under a lens in shifting 

 lights, but the iridescence and surface luster somewhat obscured by short, 

 erect, ochraceous hairs. 



