7S GEORGE n. HORN, M. D. 



placed. Beneath very sparsely punctured, elothed with long yellow hairs 

 sparsely placed, longer and more numerous on the pectus than abdomen. Length 

 .30— .32 inch; 7.5—8 mm. 



Diflfers from all our species by its more elongate form, parallel sides, 

 more transversely convex thoras and elytra. The surface is very 

 fiiiutly sericeous. 



Occurs rather abundantly in Owen's Valley California. 



Serica crassata, Walker, Naturalist in Brit. Col. II, 1866, p. 323. 

 This appears to be anthracina Lee. 



Serica robusta, Lec.= valida Harold, Cat. p. 1121 ; Col. Heft. V, 1869. 



Dynastes Tityus, (Linn). 



A specimen in my cabinet from Fort Grant, Arizona, has the 

 thoracic horn very nearly twice as long as in our eastern specimens, 

 the tip is broader and deeply emargiuate, and the two small horns 

 usually seen below the base of the larger are here reduced to small 

 tubercles and are placed on the base of the horn itself. The frontal 

 horn is also proportionately longer, distinctly grooved on its upper 

 edge and with a tooth about one fourth from the tip limiting the 

 groove in front. From the base of thorax to tip of thoracic horn the 

 length is 1.30 inch, in our eastern form a similar measurement gives 

 .86 inch. The specimens have otherwise .similar size and appear- 

 ance. For this variety the name of Di/nastes Grantu is pro- 

 posed. 



Valgus californicus, n. sp. — Piceous-black, head coarsely punctured, vertex 

 moderately concave. Thorax longer than broad, coarsely but sparsely punc- 

 tured, with a broad shallow impression on the median line near the apex and 

 a moderately deep impression near the middle of the lateral margin. Disc of 

 elytra flat with moderately deep strise with convex intervals, irregularly dis- 

 posed. Pygidium oblique, moderately convex and styliferous at apex. Under 

 surface rather shining and coarsely punctured. Length .35 inch; 9 mm. 



This specimen is in rather imperfect condition, being almost entirely 

 deprived of vestiture the few scaly hairs that remain being black. It 

 diflfers from either of our spacies ia the absence of any denticulation of 

 the sides of the thorax in front; the median sulcus is very faint and 

 the lateral impressions deep so that the sides appear to be slightly em- 

 argiuate when viewed from above. The entire surface although de- 

 prived of vestiture is feebly shining; the last two dorsal segments of the 

 abdomen have more lustre and are rather densely punctured. The 

 teeth of the anterior tibiae are short, the apical and third alone being 

 at all acute. The style (tariere) is short, flattened and rounded at tip. 

 A single specimen was found at Fort Crook, Cal., during July, 

 caught in a spider's web. 



