84 
NORTH AMERICAN MALACHIIDAE 
heads. Tlie black abdomen and legs will separate it at once 
from the long-headed species already described, and the relatively 
narrow thorax and head, and more elongate male antennae will 
separate it from dijficilis, to which it bears a general resemblance. 
Attalus dilutimargo new species 
Shining, black, elytra pubescent, mouth pale, the narrow reflexed edge 
around the base of the thorax dull testaceous, and the lateral and sutural edges 
of the elytra narrowly, diffusely paler; pubescence fine, sparse and inconspic- 
uous, the few erect setae also unusually fine and visible only in profile; punc- 
tuation throughout sparse and minute, indistinct upon the elytra. Antennae 
(cf ) but little shorter than half the length of the body, not serrate, brownish 
piceous, basal joints indefinitely paler, joints three to eleven longer than wide, 
the outer ones more distinctly so. In the female the antennae scarcely pass 
the base of the thorax, joints scarcely longer than wide. Head as wide as the 
thorax, the latter transverse, sides moderately rounded. Elytra moderately 
widened behind in both sexes. Body beneath black; legs piceous, tibiae and 
tarsi — more especially of the four anterior feet — -paler. Length 1.5 to 1.7 mm. 
Arizona: Huachuca Mountains, May 3, (Mr. Clenience). 
A single pair, of which the male is the type. 
This very small species is apparently nearest to the California 
lohulatus, but the pale margins of the latter are broader and 
sharply defined, and on the elytra extend around the elytral apex. 
Attalus tuberculifrons new species 
Moderately elongate, feebly shining, black, head — except the occiput — 
and the entire limb of the thorax narrowly rufo-testaceous, side and apical 
margins of elytra very narrowly yellow. Antennae (cf) rather short, not 
serrate, rufo-testaceous, outer joints slightly darker, joints three to five a little 
stouter, following joints a little longer than wide. Head slightly wider than the 
thorax, front bi-impressed, the impressions separated by an elongate tuberculi- 
form prominence; surface finely alutaceous and with minute scattered punc- 
tures. Thorax strongly transverse, surface similarly alutaceous and punctu- 
late; the pale margin widened a little at the hind angles, extremely narrow along 
the apex, disk with faint greenish lustre. Elytra feebl}^ widened apically, 
surface feebly rugulose and minutely, obsoletely punctulate. Body beneath 
black; front and middle legs rufo-testaceous, the upper sides of the femora 
black; hind legs black with tibiae and tarsi brownish. Length 2 mm. 
Arizona: Santa Rita Mountains, April 13, a single male. 
A small species of the general aspect of hasalis LeConte, but 
less shining and with frontal tubercle. The pubescence is pale, 
semi-erect and moderately plentiful, though fine and incon- 
spicuous, and without longer erect setae. The last joint of 
the maxillarj^ palpi is less pointed than usual, the tip being rather 
widely truncate. 
