448 PROCEEDINGS OF THE NATIONAL MUSEUM vol. i04 



Psammodius mcclayi, new species 



Holotype oval, very convex, rufopiceous, sliinmg. Head convex, 

 rather closely verrucose, occiput smooth. Clypeus finely margined, 

 moderately deeply, angularly emarginate, limiting angles sharply 

 rounded, sides weakly arcuate, genae moderate. Eyes very small 

 and degenerate. Pronotum width 1.3 mm., length 0.8 mm., angles 

 obtusely rounded, sides entire, posterior angles and base wealdy 

 crenate and fimbriate, base and sides margined, surface with moder- 

 ately coarse punctures arranged for the most part in two shallow, 

 transverse grooves, one postapical, the other somewhat arcuately 

 backward from one lateral fovea to the other, with a few scattered 

 punctures on each side laterally, elsewhere with scattered very fine 

 punctures throughout, median line shallow but distinct over basal half. 

 Elytra very convex, almost globular, mdth 1.8 mm., length 2.1 mm., 

 basally as wide as pronotum, base not margined, humeri not dentate, 

 sides fimbriate with long, fine hair; striae moderate, deep, strial punc- 

 tures fine, scarcely crenating the sides; intervals convex, smooth, with 

 a barely perceptible median line of minute punctures. laner wuigs 

 absent. Metasternum at middle only two-thirds as long as width of 

 posterior femur, smooth, slightly depressed at middle, midline distinct, 

 laterally smooth to finely alutaceous, anterior postcoxal line absent, 

 only a trace of a line or depression in front of posterior coxal plate. 

 Abdominal segments slightly convex, sm.ooth to minutely alutaceous 

 at sides, minutely crenate in front, each with a medianly interrupted, 

 anterior row of well-separated setigerous punctures bearing long fine 

 hairs. Pygidium finely scabrous to extreme edges, fringed with long, 

 fine hairs. Anterior femur without anterior marginal line, smooth 

 posterior face with long, fine hair along margins. Middle femur half 

 as wide as posterior, both with distinct, entire marginal lines and with 

 setigerous punctm-es bearing long, fine hau-s near anterior and pos- 

 terior edges, otherwise smooth. Middle and hind tibiae with com- 

 plete oblique ridges. Posterior spurs narrow, the tips oblique and 

 slightly concave, long spur as long as fh'st two tarsal joints combined. 

 Tarsal joints triangular. Length 3.1 mm., width 1.8 mm. 



Type: USNM 61848. 



Type locality: Playa del K,ey, Los Angeles County, Calif. 



Specimens examined: 403. 



Paratypes: United States: California: 9, state label only; 304, 

 Playa del Rey, Feb. 10, 1934, McClay; 29, San Francisco, Dec. 20, 

 1919, Feb. 8, 1920, Dietrich; Dec. 20, 1919, Feb. 3, 1920, Martin; 

 Mar. 1, 1908, Blaisdell, February 1933, Ross; 7, Santa Barbara, Jan. 

 2, 1929; 20, Santa Cruz, Feb. 23, 1929, Van Duzee; Jan. 15, 1938, 

 Tilden; 1, Stinson Beach, Nov. 12, 1931, McCaleb; 2, "Hueneme," 

 Jan. 28, 1932; 1, San Diego, Apr. 26, 1881; 17, Alameda County, 



