Coleopterological Notices, VII. 525 



Smaller species, much less than 2 mm. in length ; femora abruptly clavate. 

 Body stout, the prothorax not longer than wide and subglobular; antennae 

 stouter, -with a stronger and less rapidly incrassate club. 



9 6 motscliulskii 

 Body less stout, the prothorax longer than wide; antennae long and 



slender, with a very rapidly incrassate club 9 7 floridanus 



Front more narrowly and strongly prolonged between the antennae, the basal 



joint of the latter longer; elytra scarcelj'- at all impressed at base, the 



humeri subobsolete; pubescence of the elytra long, sparser erect and 



bristling; femora very abruptly clavate; head with a denser tuft of coarse 



hairs at each side of the base of the occiput; body generally pale in color. 



Posterior femora simple, strongly clavate as usual but not dentate externally. 



Sides of the prothorax broadly and evenly rounded, though gradually 



more convergent anteriorly as usual. 



Prothorax longer than wide; antennal club more slender. 



9 8 loiigicollis 

 Prothorax not quite as long as wide; antennae stouter throughout. 



5 9 ochreatus 

 Sides of the prothorax swollen and subangularly prominent behind the 



middle; head relatively smaller, the elytra shorter 10 saginatus 



Posterior femora dentate externally near the trochanters, probably in both 

 sexes 11 cruralis 



The two principal subdivisions indicated above are almost sub- 

 generic in importance ; the second is probably myrmecophilous 

 in habits. The species are rather closely allied among theinselves 

 but appear to be distinct as defined above. The male has the 

 sixth ventral segment longer than the female as a rule. 



1. Eu. grossus Lee. — New Sp. Coleop. 1, Sm. Misc. Coll. 167, p. 26. 

 (Microstemma). 



Stout, very convex, polished, dark castaneous, the elytra 

 slightly paler and brighter rufous ; legs and antennas dark rufo- 

 testaceous ; pubescence rather abundant, shorter and but slightly 

 conspicuous anteriorly, erect, longer and recurved on the elytra. 

 Head from frontal margin to base about | wider than long, the 

 «ye3 rather large but only feebly convex, the tempora | longer 

 than the eyes, feebly convergent and broadly rounded behind 

 them to the abrupt basal constriction, minutely, sparsely punctu- 

 late with a wide smooth median space, which becomes tumid to- 

 ward base ; hairs directed transversely and inwardly. Antennae 

 ^ as long as the body, the club incrassate ; basal joint much thicker 

 than the second and fully ^ longer, enlarged toward apex and 

 deeply hollowed within for the reception of the second joint when 



Annals N. Y. Acad. Sci., IX, June, 1897.— 35. 



