524 SUBFAMILY XII. COSSOXIN-T]. 



KEY TO GENERA OF TRIBE DRYOPHTIIORIXI. 



a. Funicle of antenna 4-jointed; tarsi 5-jointed; eyes situated on the 

 head. I. DRYOPHTIIORUS. 



aa. Funicle 5-jointed; tarsi 4-jointed; eyes situated on the beak. 



II. DRYOTRIBT'S. 



I. DRYOPHTHORUS Schon., 1826. (Gr., "oak" -|- ''destroyer.") 



Here belongs a single small species, resembling those of Ca- 

 lamlrfi in form and having the antenna 1 inserted near the eyes: 

 the club elongate-oval, its apex spongy, joints 1 and 2 of fnnicle 

 short, obconic, 3 and 4 slightly longer, transverse; meta sternum 

 long, its side pieces narrow; first, second and fifth ventral seg- 

 ments very large, third and fourth extremely short; tarsi 5- 

 jointed, differing in this respect from all Rhynchophora except a 

 few species of Scolytida 1 . 



821 (9015). DRYOPHTHORUS AMERICANUS Bedel, 1885, 192. 



Narrowly oval or subcylindrical. Brownish or piceous, opaque, an- 

 tennas and legs paler. Beak longer than half the thorax, subcylindrical, 

 above feebly grooved at base, coarsely and clcsely punctured. Head 

 coarsely, sparsely punctured: eyes oval, transverse, coarsely granulated. 

 Thorax longer than wide, strongly constricted at apical fourth, sides feebly 

 curved, subparallel at base, disc coarsely variolate-punctate. Elytra 

 broader at base than thorax, sides curved, feebly converging to apex; striae 

 deep, bread, coarsely punctured at bottom; intervals narrow, strongly 

 convex. Length 2.5 mm. 



Marshall and Marion counties, Ind., scarce; Oct 14 Nov. 17. 

 Flatbnsh, Bronxville, Van Cortland Park, Milltown and Ramapo 

 Mts., X. Y.. June August. Throughout New Jersey, winter and 

 early spring, in very old logs and under bark of pine. Sanford, 

 Fla., Jan. 10. Ranges from New England and eastern Canada to 

 Wisconsin, south to Florida, occurring for the most part beneath 

 bark of pine and about wood-piles. The former name, corticalis, 

 Say, is preoccupied. 



II. DRYOTRIBUS Horn, 1873. (Gr., "oak" + "eater.") 



Also represented by a single species resembling the preceding, 

 and having the beak three-fourths as long as thorax, curved, 

 slightly flattened, constricted behind the eyes, coarsely striate- 

 punctate above; eyes small, rounded, coarsely granulated, situ- 

 ated on sides of beak about one-fifth from base; antenna? in- 

 serted midway between eyes and apex of beak, scape reaching 

 hind margin of eye, as long as the remaining joints together, 

 funicle 5-jointed, first and second joint obconical, the first the 



