194 Memoirs on the Coleoptera 



in Eumolops and are much more diversified in size, lilliputicus 

 being as small as the average size in Ferestria or Gastrosticta. The 

 eleven species of Evarthrinus in my collection may be known as 

 follows: 



Elytra with three dorsal punctures in both sexes; prothorax with a 

 deep and entire apical incised line. [Evarthrinus in sp.] 2 



Elytra with one puncture, very rarely with two, the prothorax without 

 an incised line — medially at least. [Evarthrops n. subgen.]. . . .4 



2 — Elytra with a short but distinct scutellar stria. Body ( 9 ) sub- 

 parallel, moderately convex, deep black, rather shining, the elytra 

 opaque; head moderately large, the anterior sulci parallel, the 

 mandibles coarsely strigose; prothorax shorter, three-sevenths wider 

 than long, the sides parallel, with thick reflexed margins, subevenly 

 arcuate, becoming parallel in about basal eighth; surface feebly 

 concave transversely near the base, the fovese linear, with an obtuse 

 ridge near the margin; elytra two-thirds longer than wide, only a 

 fifth wider than the prothorax, the striae rather coarsely impressed 

 and strongly punctate, gradually fine and subimpunctate apically; 

 seventh interval swollen basally. Length (9) 16.0 mm.; width 

 4.9 mm. Indiana deceptus Csy. 



Elytra without trace of scutellar stria, the subscutellar puncture simi- 

 larly large however; prothorax less transverse; body less parallel. . . 3 



3' — Size larger, deep black, rather convex, shining, the elytra but little 

 less opaculate in the male than in the female; head nearly as in 

 the preceding, the mandibles a little larger, the anterior sulci parallel; 

 palpi similarly with pale and truncate tip; prothorax scarcely a 

 third wider than long, the sides parallel, subcircularly rounded and 

 reflexed, the gutter a little wider behind than before the middle; 

 at base they become parallel; base broadly, feebly sinuate except 

 at the sides; surface with distant feeble rugulae, feebly transversely 

 impressed near the base, the fovese linear, rather widely separated 

 from the marginal ridge by a feeble and uneven concavity; elytra 

 oblong-suboval, gradually arcuately narrowing behind, with very 

 feeble sinus, two-thirds to three-fourths longer than wide andJJ^a 

 third (9) or a fourth {(^) wider than the prothorax, the striae 

 coarse, deeply impressed and coarsely punctate, gradually very 

 fine and with minute, remote punctures distally; seventh interval 

 tumid at base; anterior male tarsi strongly dilated. Length (cf 9) 

 16. 2-17. 8 mm.; width 5.8-6.2 mm. Indiana, — Levette collection. 



minax n. sp. 



Size smaller, subparallel, feebly ventricose in the female, black, rather 

 shining, with opaculate elytra in both sexes; head a little smaller, 

 four-sevenths as Avide as the prothorax, the anterior sulci similar, 

 the mandibles smaller and with less numerous oblique grooves; 

 prothorax rather more than a third wider than long, in form nearly 

 as in minax, except that the sides are more gradually rounded 

 behind the middle and the transverse basal impression obsolete; 

 foveae, submarginal ridge and widely, spaced feeble rugulae almost 



