Brazilian Baring 223 



coarse and more obviously punctate but otherwise nearly similar; interstitial 

 punctures distinct, well spaced in single series and bearing suberect and dark, 

 mingled with a few longer, paler and hair-like, squamules, those of the 

 pronotum as in cephalotes; legs almost similar but with relatively longer 

 hind tibiEe; abdomen convex, the punctures more widely separated. Length 

 26 mm.; width 1.25 mm. Brazil (Chapada). March. One specimen. 



seriatus n. sp. 



With the scanty material at hand I am unable to discover any 

 sexual modifications in this peculiar genus. 



Peclaviopsis n. gen. 

 The body in this genus is of rather small size, elongate-suboval, 

 only moderately convex and strongly sculptured, the vestiture 

 sparse. The beak is thick, only feebly arcuate, compressed and 

 strongly sculptured ; it is separated from the head by a large and 

 deep reentrant angle. The mandibles are perfectly straight inter- 

 nally and are somewhat narrow, though with blunt apex, the 

 terminal lobe of the upper surface of the beak unusually long, 

 rounded. Antenna short, medial, the first funicular joint as long 

 as the next three, 2-7 shorter than wide, gradually broader and 

 rather compact, the club oval, conically pointed and with large 

 basal segment; it is moderately abrupt in formation and more 

 than half as long as the funicle. The prosternum is flat, strongly 

 punctate, somewhat widely separating the coxae and with a small 

 smooth fossa at apex. The hind tibiae are much shorter than the 

 femora, narrow and bent at base, the tarsi peculiar, with short first 

 two joints and deeply incised third joint, this being especially large 

 and with two elongate lobes in the anterior tarsi of the male. The 

 prothorax is not definitely tubulate at apex, the apical constriction 

 broad and very feebly marked above. The type is as follows: 



Peclaviopsis planipectus n. sp.— Elongate, oblong-suboval, deep black and 

 shining; squamules small, whitish, sparse at the sides of the pronotum and a 

 little larger, closer and more distinct beneath; on the elytra they are hairdike 

 and suberect, dark, whiter toward the suture and in single loose series; beak as 

 long as the head and prothorax, feebly arcuate, somewhat thicker, also more 

 declivous apically above, in the male, strongly, closely punctured at the sides 

 behind the antenna;, more finely and sparsely elsewhere; antenna; blackish; 

 prothorax but feebly convex in lateral profile, only a fourth or fifth wider than 

 long the sides very feebly convergent and but slightly arcuate, more rounded at 

 apex, the latter truncate and fully half as wide as the base; punctures strong 

 and deep but rather widely separated, close and coarser at the sides; basal lobe 

 very short, gradually formed, its obtuse apex with a feeble medial sinus; scutel- 

 lum small, free, flat, subglabrous, sinuate at apex and quadrate; elytra a fourth 

 longer than wide, obtusely oval, the sides nearly parallel basally, a fourth wider 

 than the prothorax and twice as long, the humeri scarcely prominent, oblique 

 basally; grooves coarse, strongly punctate at the bottom, rather more than halt 

 as wide as the intervals, the punctures of the single interstitial series moderate 

 and somewhat well separated; abdomen convex, rather closely and strongly 



