150 Memoirs on the Coleoptera 



very gradually a little more converging and barely more arcuate beyond about 

 the middle, the truncate apex three-sevenths as wide as the base; surface with 

 distinct but shallow, somewhat sparse punctures, bearing the slender pale whitish 

 squamulae; basal lobe small, rapidly formed and with narrowly sinuate apex; 

 scutellum longer than wide, parallel and almost smooth; elytra one-half longer 

 than wide, very little wider than the prothorax and more than twice as long, 

 subevenly oval, with barely at all prominent humeri; striae narrow and groove- 

 like but shallow, very even, the flat intervals with moderate and sparse, confused 

 punctures, the squamulae like those of the pronotum; abdomen slightly flattened 

 and less punctate or squamulose in the type. Length 3.3 mm.; width 1.7 mm. 

 Brazil (Entre Rios). September. One example. 



There is no other described species with which this can be com- 

 pared very closely. The sex of the type is not definitely determi- 

 nable. 



Parathestonia n. gen. 



While resembling Thestonia in many of its general characters, 

 uniformly clothed surfaces, thick and strongly costulose beak, 

 feebly impressed prosternum and very moderately separated coxae, 

 strongly dentate but subprominent mandibles and strongly connate 

 tarsal claws, this genus should be regarded as different, because of 

 the structure of the antennal funicle, joints 2-4 being sube ual, 

 compactly joined and wider tha'n long, while in Thestonia the 

 second joint is one-half longer than wide. The very thick beak 

 also has a peculiar form, being almost straight, but subcircularly 

 arcuate in about apical half, the antennae slightly behind the middle. 

 The third tarsal joint is larger and more dilated, and the much 

 larger prothorax is gradually but strongly tubulate at apex; the 

 legs are much longer. The scutellum and thoracic lobe have 

 nearly the same general structure, but the former is much broader. 

 The type is as follows : 



Parathestonia obtecta n. sp. — Oblong-oval, convex, moderately shining, though 

 closely clothed with narrow ochraceous squamules, notably even in distribution 

 throughout the body and legs, somewhat less yellow on the under surface; color 

 piceous-black, with very feeble subaeneous lustre, the legs long and rather bright 

 rufous; beak almost half as long as the body, very thick, slightly compressed, 

 somewhat closely lineato-squamulose, longitudinally costulose and punctulate, 

 separated from the glabrous and minutely, sparsely punctulate head by a very 

 faint impression; antennae obscure rufous, the first funicular joint as long as the 

 next four, the other joints herissate with suberect squamules and broader distally, 

 the club large, elongate-oval, subequally segmented by distinct sutures, not 

 abruptly formed and as long as the preceding six joints; prothorax large, nearly 

 a third wider than long, inflated basally, the sides arcuate, gradually subparallel 

 basally, strongly converging and less arcuate thence to the broad sinuses forming 

 the tubulation, which is nearly three-sevenths as wide as the base; surface with 

 moderate, very evenly close-set punctures and a narrow smooth median line; 

 basal lobe very small, gradually formed as a truncated cusp; scutellum sub- 

 glabrous, quadrate, with rounded angles; elytra one-half longer than wide, barely 

 at all wider than the prothorax and three-fourths longer, having the outline of 



