446 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 104 



Type.— USNM 61847. 



Type locality: Hauser, Coos County, Oreg. 



Specimens examined. — 207 



Paratypes. — United States: Washington: l,Long Beach (Pacific 

 County), July 15, 1936, Van Dyke. Oregon: 148 (including holotype), 

 Hauser, Sept. 6, 1952, Nelson; 11, Hauser, May 20, 1954, Ritcher; 

 9, Lake Tahkenitch, June 17,27, 1936; 2, Lincoln County, June 8, 1941, 

 Nunenmacher; 3, Cannon Beach, June 11, 13, 1927, Van Dyke; 3, 

 Waldport, June 4, 1941; 2, Taft, May 1935, Ross; 1, Yamhill County, 

 May 1935; 2, Woods, June 6, 1936, K. M. and D. M. Fender; 1, 

 Gardiner, June 26, 1936; 4, Sunset Beach, June 28, 1938, Gray and 

 Schuh; 3, Newport, Sept. 1908; 2, Winchester Bay, Lane County, 

 Apr. 13, 1947, Malkin and Newell; 4, Hecate Beach, May 20, 1954, 

 Ritcher; 1, Bandon, May 19, 1954, Ritcher. California: 2, Trinidad, 

 June 6, 7, 1925, Martin; 2, Samoa, May 23, Barber; 17, Samoa Beach 

 and dunes, Humboldt County, June 18, 1907, Bradley; 1, San Fran- 

 cisco County, Mar. 22, 1927, Leech; 1, Contra Costa County, Apr. 14, 

 1927, Leech; 3, "Cal."; 1, "S. Cal." Paratypes are in British Museum 

 (Natural History), Naturhistoriska Riksmuseum, California Academy 

 of Sciences, Canadian Department of Agriculture, American Museum 

 of Natural History, Carnegie Museum, Chicago Natural History 

 Museum, Museum of Comparative Zoology, Cornell University, 

 Illinois Natural History Survey, Ohio State University, Oregon 

 State CoUege, and the private collections of Henry Howden, Antonio 

 Martinez, Gayle Nelson, Mark Robinson, and Joe Schuh. 



Remarks: Psammodius oregonensis is usually darker in color than 

 P. caelatus and P. mcclayi, the two closely related species from the 

 same region. It may be recognized by the strong, complete, anterior 

 marginal groove of the anterior femur and the lack of marginal setae on 

 the elytra. 



Psammodius caelatus (LeConte) 



Aegialia caelata LeConte, in Rep. Expl. Surv. Railr. to Pacific, vol. 12, pt. 3, 



No. 1, p. 42, 1857.1 

 Psammodius caelatus Horn, Trans. Amer. Ent. Soc, vol. 14, p. 97, 1887. 

 Psammobius caelatus Schmidt, Coleoptera, Aphodiinae. Das Tierreich (Deutsche 



Zool. Ges.), pt. 45, p. 484, 1922. 



Oval, very convex, piceous, shining, legs rufopiceous. Antennae 

 pale rufotestaceous. Head convex, rather closely verrucose, occiput 

 smooth. Clypeus broadly, triangularly emarginate, the limiting 

 angles rounded, sides weakly arcuate, clypeal notch scarcely dis- 

 cernible; genae weak and inconspicuous. Eyes very small, poorly 

 developed. Pronotum not narrowed apically, angles obtusely rounded, 

 sides entire, feebly arcuate, base strongly margined, hind angles and 



> The Zoological Report on Insects, originally scheduled for Inclusion in volume 9, was published 

 separately in June 1857 and republished in volume 12 in 18C0. 



