ioo Memoirs on the Coleoptera 



gradually circularly rounded in about apical half; grooves coarse and deep 

 throughout, punctate at the bottom; intervals with single series of strong 

 and moderately separated punctures, but little wider than the grooves 

 basally but more than twice as wide as the latter apically ; legs rather long and 

 slender, rufous. Length 3.65 mm.; width 1.45 mm. Brazil (Santarem). One 

 specimen basalis n. sp. 



The eyes are rather large, separated by nearly the width of the 

 beak in basalis, but much less in recta. 



Anthenius n. gen. 



The basally connate and slender, nearly straight tarsal claws 

 and small antennal club, with relatively very large basal segment, 

 are the chief distinctive structural peculiarities of this genus. The 

 body is more slender, cylindric-oval and convex, with exceptional 

 vestiture in the tribe. The type and only known species is the 

 following: 



Anthenius hispidulus n. sp. — Body narrow, cylindric-oval, deep black and 

 rather shining, the legs and beak piceo-rufous; upper surface with rather long 

 and sparse, erect setae, arranged in single lines on the elytra, the pronotum with 

 large dense white scales at the basal angles, the elytra with a line of similar 

 dense scales at the base of the third interval for a fifth the length or less, and a 

 medial area just behind the middle of each elytron, composed of similar but widely 

 separated scales in single line on each interval; under surface having narrow 

 sparse white squamules, becoming large dense scales on the met-episterna; beak 

 cylindric, feebly arcuate, rather slender, much shorter than the prothorax in 

 both sexes, especially in the male, sparsely squamulose and closely sculptured 

 basally; eyes separated by about the rostral width in both sexes; head closely 

 punctate ; prothorax just visibly longer than wide, the sides subparallel and 

 nearly straight, broadly rounding anteriad to the truncate and subtubulate apex, 

 which is two-thirds to three-fourths as wide as the base, bisinuate; basal lobe 

 small, rounded; punctures very coarse and deep, somewhat unevenly spaced but 

 generally separated by a little less than their diameters; scutellum very small, 

 subquadrate, emarginate at apex; elytra two-fifths longer than wide, only very 

 slightly wider than the prothorax and one-half longer, the sides parallel basally, 

 feebly, arcuately converging posteriorly, to the not very obtuse apex; grooves 

 moderate, abrupt, punctate along the bottom and half as wide as the flat shining 

 intervals, each with an even and widely spaced series of moderate but deep 

 punctures; legs short, slender, shining and finely, sparsely punctate; abdomen 

 feebly punctulate and with sparse white lineate squamules, apparently not 

 modified sexually. Length 2.3-2.8 mm.; width 0.72-1.0 mm. Brazil (Chapada 

 — on flowers). May and November. Nine specimens. 



The specimens vary a good deal in size, but apparently there is 

 only a single specific form at hand. The genus Ccelonertus was, as 

 might be inferred by the name, placed by its author near Nertus. 

 I do not have the true Nertus at hand just now, but if Madopterus 

 and Strongylotes are properly associable with it, constituting with 

 some others the tribe Madopterini, there does not seem to be any 

 affinity, and Ccelonertus is more closely allied to Coleomerus than 



