596 Goleox)terological Notices, VI. 



absence of a lateral submarginal line on the pronotum. The elon- 

 gate head is not strictly peculiar to Mecomycter, as it exists to a 

 pronounced degree also in Yectura. The two species can be 

 separated thus : — 



Prothorax elougate, without a lateral piojection behind the middle. 



1. oiiialiuiis 

 Prothorax transverse, with a conspicuous projection at the side at basal two- 

 fifths 2. facetus 



The genus is distributed through the arid regions from Kansas 

 to Arizona. 



1. M:. oiualiliU!>i Horn— Trans. Am. Ent. Soc, X, 1882, p. 126. 



Stout, moderately conyex, feebh' shining, pale testaceous in 

 color, the base of the head, maxillary palpi, outer seyen joints of 

 the antennffi and entire under surface of the hind body, except the 

 meso^ternal side-pieces, lilack or blackish ; elj'tra black, with the 

 apex and an elongate area from the humerus to apical third of 

 each pale testaceous ; legs pale throughout ; pubescence short, 

 rather sparse, pale in color, the elytra with a few scattered hairs 

 which are slightly longer and more erect ; marginal fringe obso- 

 lete. Head three-fourths as wide as the prothorax and nearly 

 twice as long as wide, flat and coarsel}' punctate, the interspaces 

 minuteh' punctulate ; eyes well deyeloped, distant from the base, 

 the neck narrowed toward base; antennt^ one-third longer than 

 the prothorax, the first two joints stout, the next two slender, the 

 remaining seyen larger and feebl}^ incrassate to the apex, the tenth 

 slightly transverse. Prothorax fully as long as wide, the sides 

 evenly convergent and nearly straight from the oblique and 

 slightl}' sinuate basal angles to the apex, the apical angles obtuse 

 but not rounded from above, the apex truncate, narrower than the 

 base which is broadly and evenly arcuate; marginal acute line far 

 down on the flanks, verj- fine, non-serrulate and curving upward 

 in a broad arc toward apex ; disk rather coarsely and rugosely 

 punctate. El^'tra scarcely one-half longer than wide, feel)ly di- 

 lated behind and more than twice as wide as the pro- 

 thorax, evenly and broadly rounded at apex ; humeri tumid and- 

 broadl}' exposed at base ; lateral edges fine and not reflexed ; disk 

 coarsel}' but not densely, subrugosely punctured toward base, 

 very feebly sculptured toward apex. Legs rather long and 

 slender. Length 3.0 mm.; width 1.2 mm. 



