252 NATURAL History BULLETIN. 
joint thick, twice as long as wide, nearly cylindrical, second 
half as long, third to eighth rounded, from globular becoming 
gradually transverse. Club irregular, the transverse lenticu- 
lar ninth and tenth joints thicker externally, last joint conical, 
as long as the three preceding, length one-third greater than 
the width which is equal to that of the tenth. Prothorax 
obcampanulate, slightly longer than the head, and, near the 
anterior margin, about one-fourth wider; base one-fourth 
narrower than the head. Anterior edge nearly straight, 
parallel to the base of the head, three times as wide as the 
neck, anterior angles acutely rounded, sides convergent, 
behind the anterior third slightly sinuate. Basal angles acute, 
base subangularly arcuate; disk rather flat with a broadly 
impressed median sulcus reaching from the neck to the 
posterior fourth where it is strongly dilated and connected 
with the lateral foveze by a finer obliquely transverse straight 
groove on each side. /ytra with the sides divergent, evenly 
arcuate from the base, one-third wider across the tip than the 
prothorax. Suture as long as the prothorax, base and tips 
broadly sinuate, disk depressed, tri-foveate at the base, fovez 
small, sutural lines arcuate near the base; from the middle 
fovea runs a slightly arcuate discal line, the outer fovea being 
simple. Shoulder forming an obliquely longitudinal ridge. 
Lateral deflexed margin with a deep, entire line. Addomen at 
base as wide as the elytra and slightly increasing in width to 
the fourth segment, broadly margined and without basal 
carine or impressions. Legs slender, tarsi with a single 
claw. 4 with the anterior tibiz enlarged at the middle, last 
ventral longitudinally impressed. 
Habitat. Florida. An anomalous form presenting distant 
affinities to Trogasterini. 
MAcCHZRODES, Brendel. 
This genus is closely related to Reitter’s subgenus Mache- 
rites, differing from it in the lack of tuberculations on the 
