72 Trans. Acad. Sci. 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 angles 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, very small in size, 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; antennae 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 i margination, 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 fir^ttwo 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 ; labium 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 distally; 

 prosternum much elongated before the coxae; prothorax much elon- 

 gated, with the angles rounded; elytral punctures; 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 *Pseudobium 



