72 Trans. Acad. Set. of St. Louis. 



defined basal angles, punctured in regular series; legs moderately short, 

 decidedly slender; abdomen minutely sculptured. America. 



Lathrobiopsis 

 Body parallel, normally convex, slender, shining, rather small in size, 

 sculptured as in Lathrobium ; head well developed, parallel or gradu- 

 ally wider toward base, the latter broadly arcuato-truncate, the angles 

 rounded; eyes rather small to moderate in size; maxillary palpi 

 moderately long and not very stout or decidedly inflated; antennae 

 generally very stout and submoniliform, the basal joint thick; neck 

 generally a little more than half as wide as the head ; pro^ternum some- 

 what longer before the coxae than in Lathrobium; prothorax suboblong- 

 elongate, with the apical anj^les moderately distinct; elytra longer or 

 shorter than the prothorax, the punctures frequently arranged in uneven 

 series; abdomen parallel, with the sides straight; legs thick and rather 

 short. America Lathrobioma 



12 — Body slender, parallel, moderately convex,verysraalllnsize, coarsely and 



sparsely sculptured, the head broadly truncate at base, with narrowly 

 rounded angles, the eyes small and anterior; maxillary palpi short, the 

 third joint inflated; antenuae moderately long but stout and submonili- 

 form ; neck half as wide as the head ; prosternum rather long in front 

 of the coxae, the prothorax oblong-elongate, with the sides rounded at 

 apex; elytra shorter than the prothorax, with the punctures rather con- 

 fused in arrangement; legs moderate in length and thickness; abdomen 

 parallel. America — Lathrolepta 



13 — Posterior tarsi larger and more elongate, with the first joint distinctly 



shorter than the second. Body larger, broader and more fusiform, 

 ■with the head relatively small, rounded at base, the eyes more or less 

 well developed, the antennae long, slender, filiform, not incrassate dis- 

 tally, the labrum short, truncate, with a small and broadly angular 

 median emargination, the lobes usually broadly, feebly oblique poste- 

 riorly and inwardly ; gular sutures widely separated, distinct; proster- 

 num moderately developed before the coxae; neck one -third as wide 

 as the head; abdomen minutely, densely punctate and dull; elytral punc- 

 tures irregular, never serial - 14 



Posterior tarsi smaller, more slender and filiform, the first joint distinctly 

 longer than the second, the fifth about as long as the first two combined- 

 Body smaller, extremely slender, linear and subparallel, the head 

 relatively larger, oblong-elongate, arcuately truncate at base, with the 

 angles rounded, the eyes rather well developed; labrum short, truncate* 

 much narrowed at base, with the usual small median emargination, the 

 lobes narrowly rounded externally; maxillary palpi shorter, somewhat 

 strongly inflated, the fourth joint strongly retractile; gular sutures 

 moderately separated, feebly arcuate, slightly diverging toward base, 

 effaced throughout and traceable only by the arrangement of the 

 punctures; antennae moderately thick, distinctly incrassate di&tally; 

 prosternum much elongated before the coxae; prothorax much elon- 

 gated, with the angles rounded ; elytral puncturesj disposed in coarse 

 impressed regular lines; anterior tarsi less strongly dilated; neck rather 

 more than a third as wide as the head; legs rather short and slender. 

 Europe *F8eudobiuin 



