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. Protho7-ax 

 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 slightl}^ 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 foveas by a finer obliquely transverse straight 

 groove on each side. Elytra 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, fovete 

 small, sutural hnes 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 detlexed margin with a deep, entire Hne. Abdomen at 

 base as wide as the elytra and slightly increasing in width to 

 the fourth segment, broadly margined and without basal 

 carin^e or impressions. Legs slender, tarsi with a single 

 claw. 6 with the anterior tibiae enlarged at the middle, last 

 ventral longitudinally impressed. 



Habitat. Florida. An anomalous form presenting distant 

 affinities to Trogasterini. 



jNlACHyERODEs, BreudcL 



This genus is closely related to Reitter's subgenus Machse- 

 rites, differing from it in the lack of tuberculations on the 



