68 Memoirs on the Coleoptera 



glabrous basal lobe of the fourth pale testaceous; palpi slender, 

 pale; prothorax about as long as wide, the sides broadly rounded, 

 very finely reflexed, straight posteriorly and slightly oblique, the 

 angles very obtuse, with the tips distinct; base and apex equal, 

 the base rounded laterally, the apex rather deeply sinuate; surface 

 opaculate, without transverse impressions, the very fine stria not 

 quite entire; foveae moderate, feebly concave, with a short linear 

 basal part; elytra fully two-thirds longer than wide, not quite 

 twice as wide as the prothorax, parallel, with feebly arcuate sides, 

 gradually more arcuate basally; apex gradually and subevenly 

 rounded behind, with short but evident sinus; striae very fine, 

 sharp, impunctate; intervals flat, the third with six small punctures; 

 met-episterna much elongated; anterior male tarsi long, slender, 

 only very slightly dilated. Length (cf 9) 7-5-8.5 mm.; width 

 2.7-3.1 mm. Rhode Island, New Jersey, Indiana and Iowa. 



[Feronia decora Say; An. obscurus Lee] decorus Say 



A — Form slightly more slender than in decorus and scarcely so large, 

 similar throughout in coloration and lustre, except that only the 

 first antennal joint is pale rufo-flavate; prothorax narrower, 

 only just visibly wider than the head; anterior male tarsi feebly 

 dilated but rather longer, almost as long as the tibiae; antennal 

 joints decidedly more elongate than in decorus, the third much 

 more distinctly shorter than the fourth; elytral lustre and sculp- 

 ture similar. Length (cf) 7.4 mm.; width 2.6 mm. Texas 



(Galveston). One example arenarius n. subsp. 



Body smaller and more abbreviated, similar in coloration and general 

 structure; head slightly elongate and very little narrower than the 

 prothorax, with large and prominent eyes; palpi slender, pale; 

 antennae shorter, about half as long as the body, black, the first 

 joint pale, the third and fourth subequal; prothorax shorter, nearly 

 a third wider than long, the sides more arcuate just before the 

 middle, oblique and straight or subsinuate posteriorly, the angles 

 obtuse but with sharply marked tips; base oblique at the sides, 

 scarcely as wide as the apex, which is much more feebly sinuate 

 than in decorus; surface throughout nearly as in the latter, dull; 

 elytra shorter, three-fifths longer than wide, not quite twice as 

 wide as the prothorax; apex more obtuse than in decorus, with 

 rather distinct sinus, the humeri more rapidly rounded; surface 

 less dull, feebly alutaceous, the striae not quite so fine; intervals 

 not quite flat and with the fine punctulation more irregularly dis- 

 tributed, much sparser and finer, the third with six or seven punc- 

 tures; legs shorter and slightly stouter. Length (?) 6.8 mm.; 

 width 2.6 mm. Arizona (Tugson). A single example, taken by the 

 writer tepidus n. sp. 



There is some uncertainty involved in the identification of the 

 older species of this section, for, as no one of the original types is 

 available for comparison, the descriptions are all we have to guide 

 us, and these are deficient or defective in some cases. It seems 



