TRIBE V. RHYNCOLIXI. 537 



large deep fovea, the latter with a short, groove. Thorax oblong, longer 

 than wide, slightly narrower in front, sides broadly rounded, more so at 

 base and apex; disc rather coarsely, not densely punctured. Elytra 

 scarcely wider than thorax; striae rather shallow, with rows of close-set 

 quadrate punctures; intervals not wider than strife, punctured as mention- 

 ed in key. Beneath coarsely punctured; ventral segments 1 4 sparsely 

 and less coarsely punctured. Length 5 5.3 mm. 



New Smyrna and Lake Worth, Fla., one specimen at each 

 place on ocean beach. St. Simon Island, Ga. ; April 22 May 12. 

 More depressed, with the elytral intervals less convex and more 

 finely punctate than in siibcylindricus. 



Tribe V. RHYNCOLINI. 



Small cylindrical species resembling certain Scolytidse in 

 general appearance and agreeing in the following principal char- 

 acters; antennal grooves beginning near the tip of beak (except in 

 Tonfolips and Stenoscclis) and descending obliquely below the 

 eyes, the latter with a deep transverse gular groove in front be- 

 neath, which receives in part the antennae in repose; beak short, 

 broad, usually continuous with the head ; prosternum very nar- 

 row between the coxa?. The distribution is principally northern, 

 though a number of species are known from Florida. We regard 

 the narrowly separated front coxre as a more important character 

 than the length of beak, and hence retain Phlceopliagus in this 

 tribe. 



KEY TO EASTERN GENERA OF RHYNCOLINI. 



a. Beak half or more the length of thorax; funicle 7-jointed. 



I. PHLCEOPHAGUS. 



oo. Beak distinctly less than half the length of thorax. 

 &. Funicle 5-jointed. 



c. Beak slightly narrowed from base to tip, not separated from 

 head by a transverse impression; club truncate at tip; sculp- 

 ture very coarse. II. TOMOLIPS. 

 cc. Beak not narrower at tip than base, separated from the head by a 



broad, transverse impression; club not truncate. 

 (I. First joint of funicle very large, almost wholly enclosing the 

 second; club slender, gradually formed. 



III. PSEUDOPENTARTHRUM. 



dd. First joint of funicle moderate, not concealing the base of sec- 

 ond; club abruptly formed. IV. PENTARTIIRINUS. 

 &b. Funicle with more than five joints. 



e. Funicle 6-jointed; club nearly solid; beak much longer than head. 



V. HEXARTHRUM. 

 ee. Funicle 7-jointed. 



f. Elytra distinctly striate; form more robust. 

 g. Beak at least as long as head, its antennal grooves beginning 

 near the tip; tarsi usuallv dilated. . VI. RHYNCOLUS. 



