AMERICAN COLEOPTERA. hi 



with small spurs. Tarsi slender, simple without onychium, claws 

 simple. The characters given in the table separate this genus from 

 its closest allies. 



A. bicolor Mels. — Oblong oval, piceous, moderately shining, sparsely 

 pubescent. Head very sparsely finely punctate. Antennae piceous, two basal 

 joints pale. Thorax twice as wide as long, sides arcuately narrowed to the 

 front, margin obtuse, base bisinuate, disc convex, very sparsely finely punctu- 

 late. Elytra not wider at base than the thorax, oblong oval, slightly broader 

 behind the middle, surface substriate, strise obsoletely punctured, intervals 

 finely punctulate. Body beneath very sparsely finely punctulate. Legs piceous, 

 femora paler. Length .20 — .24 inch; 5 — 6 mm. 



Occurs from New York to Georgia, but rare. 



AlVCHYCTEIS n. g. 



Head deflexed. Prosternum in front of coxae short, prolonged 

 between and slightly posterior to them, coxae oval, more prominent 

 than the prosternum. Frontal suture distinct. Mouth parts as in 

 Odontonyx, except that the lobes of the ligula are much less pro- 

 longed. Antennae a little longer than half the body, serrate 9 or 

 pectinate % , first joint rather short, conical, second very small, 3 — 10 

 moderately long, bearing a process from the anterior angle as long as 

 the joint, eleventh simple, as long as the two preceding. Mesosternum 

 separating moderately the middle coxse which are oval and slightly 

 prominent. Metasternum moderate, side pieces rather wide, epimera 

 very small. Posterior coxjb very gradually dilated internally and con- 

 tiguous on the median line. Legs moderate, tibiae with spurs, tarsi 

 slender, simple without onychium, claws simple. 



This genus is distinguished from Anchjjtarsus by the structure of 

 the antennte, the more deflexed head with a frontal suture and the 

 contiguous hind coxae. 



A. velatina n. sp. — Oblong oval, robust, black, moderately shining, 

 sparsely clothed with extremely fine black pubescence. Head deflexed not 

 visible from above, densely punctate. Thorax one-third broader than long, 

 narrowed in front, apex truncate, sides very little arcuate, base bisinuate, disc 

 convex, moderately densely punctured. Scutellum oval, concave, acute at tip. 

 Elytra wider than the thorax at base, sides nearly parallel, narrowed at apical 

 third, convex, surface obsoletely striate, strise punctured near the apex, inter- 

 vals flat at base, more convex posteriorly, densely punctulate. Body beneath 

 densely finely punctulate. Length .40 inch; 10 mm. (Pi. I, fig. 4). 



In form this insect resembles a gigantic Ftilodactt/la. The striae 

 are often extremely vague, but in those in which the sculpture is 

 best developed there arc two .short scutellar striae. One specimen 

 before me has brownish pubescence, another has the elytra and 

 tibiae luteous. 



