16G Journal New York Entomological Society. fVoi. xxix. 



tured, the punctures separated by little more than half their own diameters. 

 Clypeal suture arcuate and distinct. Front less densely punctured than the 

 clypeus, the punctures separated by about twice their own diameters. Antennal 

 club small, about equal to the combined length of joints 2-6, inclusive. Eyes 

 relatively small. Measurements of head in tenths of a millimeter: diameter 

 of head through eyes, 21; distance between inner eye margins, 15; length of 

 head on median line, 16.5 ; antennal club, 6; dorso-ventral diameter of eye, 6.5. 



Pronotum not very convex, the punctures fine, rather evenly placed and 

 separated by about twice their own diameters; posterior angles of pronotum 

 well rounded but distinct, lateral margins only slightly arcuate, the mid-lateral, 

 pigmented spot present. Measurements of pronotum : width through posterior 

 angles, 33: width through anterior angles, 22; length on median line, 19. 

 Scutellum evenly punctured like the pronotum : length, 6.5 ; width, 7. 



Elytra with distinct line-like striae, each stria with a single, slightly irregu- 

 lar row of fine punctures separated by about their own diameters ; the rows of 

 punctures somewhat obscured or confused by rather numerous, fine punctures 

 at the sides of the intervals. The lateral stride at least with a few yellow, 

 semi-erect, but inconspicuous hairs. The intervals of uniform width instead 

 of alternately wider and narrower as in mixta. Length of elytra, 60 ; width, 43. 



Under surface shining, but with a slight metallic sheen or iridescence. 

 Metasternum and posterior coxal plates strongly punctured, the punctures sep- 

 arated by one to three times their own diameters. Abdominal sternites with 

 the usual single rows of coarse, setigerous punctures and with a fine punctura- 

 tion about like that on the pronotum, except on the last sternite where the 

 puncturation becomes a little coarser, stronger and denser with the punctures 

 showing a tendency to coalesce. Under surface, except in the region of the 

 anterior coxa: and mesosternum, nearly devoid of hair, the pubescence yellow, 

 very fine, sparse and inconspicuous. 



Length of genital armature of male, 2 mm. (PI. XIII). 



$. Unknown. 



Type: (^. California. 



The unique type of this species is the fourth of the five specitnens 

 associated together under the name mixta by Dr. Le Conte. The 

 specimen, of course reinains in the Le Conte collection. 



It seems to the writer not improbable that the two species here 

 described as new (egregia and abdita) were only tentatively associ- 

 ated by Dr. Le Conte with the first three type specimens of mixta. 

 Serica abdita new species. 



<^. Length 7 mm., width 3.75 mm. Color brownish testaceous (argus 

 brown), surface not polished as in the respertina-Uke species, but somewhat 

 opaque or pollenose with more or less of a sericeous, iridescent luster, the 

 exact intensity of which cannot be determined from the single specimen at 

 hand. 



