444 PROCEEDINGS OF THE NATIONAL MUSEUM vol. io4 



Psammodius hydropicus Horn 



Psammodius hydropicus Horn, Trans. Anaer. Ent. Soc, vol. 14, p. 97, 1887. 

 Psammobius hydropicus Schmidt, Coleoptera, Aphodiinae. Das Tierreich 

 (Deutsche Zool. Gas.), pt. 45, p. 483, 1922. 



Oval, moderately shining, rufocastaneus. Antennae pale testaceous. 

 Head strongly convex, verrucose, the granules weakly developed; 

 occiput smooth. Clypeus moderately, triangularly emarginate, 

 the limiting angles each side obtuse, rounded, sides weakly arcuate, 

 slightly notched at clypeal suture; genae weak, depressed, incon- 

 spicuous. Eyes very small and poorly developed. Pronotum 

 narrower in front, width 1.35 mm., length 0.8 mm., angles obtuse, 

 sides and base wealdy crenate and fimbriate with moderately long, 

 fine hairs; surface smooth but uneven, a vague, shallow depression 

 inward near the anterior angles, and scattered, very shallow, coarse, 

 indistinct punctures over disc and base. Elytra almost globular, 

 width 1.7 mm., length 1.9 mm., base not margined, sides not fim- 

 briate ; striae moderately wide and deep, finely punctate, the punctures 

 not noticeably crenating the sides of the smooth, weakly convex 

 intervals. Inner wings absent. Metasternum very short, the 

 scarcely impressed midline subequal in length to the width of the 

 posterior femur, smooth and shining at middle, alutaceous at sides 

 with intermixed, shallow setigerous punctures, anterior postcoxal 

 line absent, posterior antecoxal line obsolete, parallel with posterior 

 coxal plate. Abdominal segments finely alutaceous, each with a 

 transverse, anterior row of close, long, very fine hairs. Exposed part 

 of pygidium apically smooth and shining, base with transverse eroded 

 line; groove beneath tips of elytra wealdy impressed. Anterior 

 fem.ur not margined in front, clothed posteriorly with long, fine hair, 

 as are the middle and hind femurs along anterior and posterior margins. 

 Posterior femur about twice as wide as middle femur. Middle and 

 hind tibiae arcuate inward, without transverse carinae but with short, 

 longitudinal rows of three or four tubercles. Spurs slender, acute, 

 the longer subequal in length to first three tarsal joints combined. 

 First tarsal joint of posterior tarsus subequal in length to following 

 three, all except the fifth wider apically and with the outer angle 

 more or less produced. Length 2.6 to 3.5 mm., width 1.5 to 2 mm. 



Type: In Academy of Natural Sciences of Philadelphia. 



Type locality: Savannah, Ga. 



Specimens examined: 322. 



Distribution: United States: North Carolina: Wrightsville 

 Beach. South Carolina: Isle of Palm.s, Folly Beach, Seabrooks 

 Island, Edisto Beach. Georgia: Savannah. Alabama: Baldwin 

 County, Mobile, Daphne. Mississippi: Ocean Springs. 



Season: June 3 to November 11. 



