5o MEMOIRS ON THE COLEOPTERA. 



dently a little shorter than wide, at base fully as wide as the prothorax 

 and at apex only very little wider, the suture about a fourth longer; 

 abdomen at base but just visibly narrower than the elytra, thence evenly 

 and moderately tapering to the fifth tergite, which is barely three-fourths 

 as wide as the first and much longer than in the preceding, the margins 

 straight and not thick. Length 2.3 mm.; width 0.62 mm. California 

 (Fisk's Mill, Sonoma Co.). 



Easily differentiated from allied forms by the more tapering 

 abdomen, which, however, is relatively much less pointed than in 

 mansueta and by the less transverse fifth tergite; also in its paler 

 and thicker antennae and longer vestiture; the elytra are faintly 

 clouded extero-posteriorly and toward the suture basally, the suture 

 rather deeply impressed behind the scutellum. 



Oxypoda neptis n. sp. Small, rather stout, fusoid, evidently shining, 

 pale piceous-brown, the head and abdomen blackish; punctures fine, 

 asperulate, well separated, still finer but equally sparse on the abdomen; 

 vestiture rather long, not dense, palish: head nearly as long as wide, but 

 little more than half as wide as the prothorax, the eyes rather small, 

 not at all prominent; antenna? short, blackish, pale basally, the first 

 three joints only moderately elongate, the second but slightly the longest, 

 fourth as long as wide, fifth to tenth mutually similar, increasing gradually 

 but not greatly in size and fully one-half wider than long, the last relatively 

 small, ogival, not longer than the two preceding; prothorax three-fifths 

 wider than long, rounded at base, the sides strongly converging and but 

 very feebly arcuate from base to apex, the ante-scutellar impression 

 transverse and very feeble; elytra moderately transverse, distinctly 

 shorter than wide, at base fully as wide as the prothorax, at apex much 

 wider, the sides rather strongly diverging and nearly straight, the suture 

 broadly impressed at the scutellum and about a fourth longer than the 

 pronotum, the apical sinuses distinct; abdomen at base slightly narrower 

 than the elytral base, thence feebly tapering, with nearly straight sides 

 and moderately thick margins, to the fifth tergite, which is transverse 

 and nearly twice as wide as long, Length 1.8 mm.; width 0.52 mm. 

 Iowa (Iowa City), Wickham. 



Distinct in its small size, pale color, fusoid outline, small conical 

 prothorax and other features. 



Oxypoda nugax n. sp. Stout, fusoid, moderately convex, shining, 

 pale flavo-piceous, the head and an indefinite abdominal cloud darker, 

 the legs pale; punctures fine, everywhere well separated, slightly less so 

 and more asperate on the elytra, the pubescence rather short, not dense, 

 pale; elytra a little darker in color than the pronotum and with a fine 

 pale even apical margin; head fully three-fifths as wide as the prothorax, 

 transverse, the eyes at less than their own length from the base; antennae 

 short, blackish distally, pale basally, rather slender, feebly incrassate, 

 the first joint nearly as long as the second and scarcely thicker, the third 



