442 Memoirs on the Coleoptera 



and not paler and denser on parts of certain strial intervals as they are in 

 strigicollis, the white scales beneath separated, but dense along the sides 

 of the body; beak nearly similar in the sexes, moderately arcuate, longer 

 than the head and prothorax, subcylindric and coarsely punctate, the 

 antennae inserted well beyond the middle (cf), barely less apical (9); 

 prothorax two-fifths wider than long, the sides converging and nearly 

 straight, rounding in apical two-fifths to the pronounced constriction; 

 sculpture longitudinally vermicularly rugulose; scutellum small, nude; 

 elytra three-sevenths (cf) to a third (9) longer than wide, ovulate, 

 slightly wider than the prothorax and between two and three times as 

 long, striae abrupt, deep, not very coarse; intervals distantly and sub- 

 rugulosely punctate, twice as wide as the grooves; male with the abdomen 

 feebly impressed and more sparsely squamulose medio-basally, the 

 prosternum not armed. Length {(^ 9 ) 2.3-2.6 mm.; width 0.9-1. 1 mm. 

 Missouri. Two examples. 



Differs from strigicollis as above stated, but especially in the 

 sparse and subuniform, slender elongate squamules of the strial 

 intervals; the strigilation of the pronotum seems to be coarser in 

 the female than in the male, where it is even finer and feebler than 

 in strigicollis. The female is stouter and relatively more abbreviated 

 than the male in both species. 



Pseudogeraeus Chmp. 



The following species seems to belong to this genus, but is widely 



different from macropterus, its type, as described from Guerrero 



specimens. The mandibles are small, somewhat decussate, forming 



a triangle when closed, and each has a small internal tooth: 



*Pseudogeraeus championi n. sp. — Elongate-oval, convex, deep black 

 throughout and shining through the sparse vestiture, which is yellowish- 

 white above, the squamules long, slender, almost evenly and sparsely 

 distributed on the pronotum and sparsely and evenly arranged in single 

 or double lines along the strial intervals, without admixed darker scales 

 at eny point; under surface with coarsely linear, rather sparse white 

 scales throughout; beak in the female squamulose, evenly and moder- 

 ately arcuate, thick, feebly tapering, coarsely sculptured and barely as 

 long as the head and prothorax, the antennae inserted at three-fifths, the 

 club rather small, broadly oval, with its first joint fully half the mass; 

 prothorax as long as wide, the sides broadly, subevenly arcuate to the 

 strong apical constriction, becoming subparallel basally, the tubulate 

 apex less than half as wide as the base, the median lobe almost obsolete; 

 sculpture consisting of longitudinal vermiform rugae, without trace of 

 any kind of punctures, the smooth median line distinct and entire; 

 scutellum quadrate, sparsely and finely squamulose; elytra nearly twice 

 as long as wide, the sides gradually converging, broadly, evenly arcuate 

 from the moderate humeral swellings to the evenly rounded apex, wider 



