52 MEMOIRS ON THE COLEOPTERA. 



parallel, the sides feebly and subevenly rounded, unimpressed; elytra large, 

 much shorter than wide though very much longer as well as wider than the 

 prothorax; abdomen narrower than the elytra, parallel; three basal joints 

 of the hind tarsi decreasing moderately in length. Length 1.75 mm.; width 

 0.4 mm. Rhode Island (Boston Neck). 



Readily distinguishable by the relatively small head and pro- 

 thorax and wide elytra; the eyes are more developed than usual 

 and the tempora are not in the least inflated. 



Atheta (Micrearota) fecunda n. sp. Coloration and fine indistinct punc- 

 tuation as in the preceding, the reticulation small and feeble but more or less 

 evident, that of the abdomen coarser but feebler and, as usual, irregular; 

 head nearly as long as wide, the eyes moderately convex, at a little more than 

 their own length from the base, the swollen tempora slightly more prominent, 

 the carinae fine but long and entire or very nearly so; antennae only moder- 

 ately short, of the usual structure, stout except basally, the outer joints 

 transverse, the ninth evidently shorter than the tenth, the last pointed at 

 tip and about as long as the two preceding; prothorax rather transverse, 

 much wider than the head and evidently narrower than the elytra, widest 

 near apical third, the sides broadly rounded, straighter basally, unimpressed; 

 elytra moderately short, transverse, the suture not impressed and materially 

 longer than the prothorax; abdomen much narrower than the elytra, parallel, 

 with straight sides; hind tarsi as usual, slender, the first three joints rapidly 

 decreasing. Length 1.6-1.75 mm.; width 0.35 mm. New York (Catskill 

 Mts.). 



Distinguishable from any other species by the unusual develop- 

 ment of the infra-lateral cephalic carinae, which are frequently 

 virtually entire though sometimes abbreviated, always however, 

 so far as observed, extending well before the middle. 



Atheta (Micrearota) sana n. sp. Rather stout, only feebly convex, colored 

 as in the preceding species, shining, the fine reticulation feeble, the minute 

 punctures not dense; pubescence rather coarse; head nearly as long as wide, 

 the eyes well developed, at rather less than their own length from the base, 

 the tempora parallel, feebly arcuate, not at all more prominent, the carinae 

 wholly obsolete; antennae very stout, rather short, distinctly incrassate, 

 the outer joints mutually similar in form, strongly transverse, the last pointed, 

 stout, rather longer than the two preceding; prothorax unusually transverse, 

 but little narrower than the elytra and much wider than the head, the sides 

 almost evenly and moderately arcuate, unimpressed; elytra moderately 

 transverse, much longer than the prothorax; abdomen distinctly narrower 

 than the elytra, perfectly parallel, with straight sides; first three joints of 

 the hind tarsi rapidly diminishing in length, slender as usual. Length 1.6 

 mm.; width 0.42 mm. Pennsylvania (Philadelphia). 



Recognizable among the other species by its rather stout form 

 and transverse prothorax. 



