NORTH AMERICAN COLEOPTERA. 275 



umboiial arcuate impression, moderately densely punctate, the jmnctures finer 

 than those of the thorax, color pale yellowish white, sides piceous or brownish, 

 which is gradually evanescent toward the apex. Body beneath and legs entirely 

 pale yellow, abdomen sparsely, finely punctate. Length .14 — .16 inch.; 3.5 — 4 

 mm. 



The lust ventral of male has the usual trilobed form, the middle 

 lobe moderately produced, concave and with a smooth median line. 



This species may be difficult to distinguish from the pale forms of 

 blanda, but the surface is never shining and the elytral punctures 

 denser. In the pale forms of blanda the vittate character of the 

 species can always be distinguished. 



Occurs from Massachusetts to Florida and westward to Missouri. 



Group XV.— APHTHON^. 



Form oval. Antennae 11 -jointed. Anterior coxal cavities open 

 behind. Thorax without trace of basal impressions. Posterior 

 tibise grooved at least near the apex and terminated by a moderately 

 long spur. Mesosternum distinctly visible. Posterior tarsi with last 

 joint not inflated, the claws simple. 



These few characters are all which can be used to define the entire 

 group. All the genera are represented in both our fauna and in 

 Europe. They are as follows : 



Posterior tibiie with the apex entire, the spur placed in the middle in front of 



the tarsus. 

 First joint of liiud tarsi nearly or quite as long as half the tibia ; punctuation 



of elytra confused Loiigilarsus. 



First Joint of hind tarsus not more than one-third the length of the tibia and 



scarcely as long as the three following joints united ; punctuation of 



elytra disposed in regular strife Glyptiiia. 



Posterior tibite with the inner apex notched or bilobed, the spur placed on the 



inner lobe. 

 First joint of hind tarsus not longer than one-third the tibia ; punctuation of 



elytra in great part or entirely confused Aplitlioiia. 



After a study of our species of Glyptina in comparison with 

 Batophila there does not seem to be any tangible character for sepa- 

 rating them, and, as the former name has priority, has been adopted. 



Aphthona is confined to the Atlantic region, the other genera are 

 represented on both sides of the continent. 



L.O]\'GITARSlIS Latr. 



Head oblong, not inserted as far as the eyes, front distinctly cari- 

 nate and with the usual two tubercles distinctly separated and limited 



