82 
NORTH AMERICAN MALACHIIDAE 
Attains serraticornis new species 
Rather stout, very little widened posteriorly in either sex; pale red, the head 
varying from entirely red to black with the mouth red; prothorax with or 
without a median black stripe, elytra each with a small, black basal spot not 
reaching the suture, and a subapical one attaining the side margin but not the 
suture, the basal spots sometimes lacking. Head and thorax moderately shin- 
ing, elytra dull, pale pubescence very fine and short, the few erect black hairs 
on the elytra very short and inconspicuous. Head subequal to the thorax 
in width, the latter transversely oval, both very minutely, sparsely punctulate. 
Antennae black, more or less pale at base, strongly serrate and setose in the male, 
joints three to six as wide as long; in the female shorter and narrower, but dis- 
tinctly serrate, joints four to ten as wide as long. Elytra finely and feebly, 
but rather closely, punctate. Metasternum black, ventral segments black in 
the male, red in the female, the membranous margins of the segments pale — ■ 
as usual. In the type the terminal segment is pale, but in a second male is 
black. Legs red, the hind thighs dusky at tip. Length 2.5 mm. 
Southern California: Palm Springs and Old Beach on the 
border of the Colorado Desert, April, (Fenyes): New Mexico; 
Alamogordo: Texas — without specific locality. The type 
is a male from Palm Springs, California. 
The antennae are more strongly serrate than in any other of 
our species of Aftalus. In the male the tip of the pygidium is 
broadly rounded, in the female narrower and subtruncate. The 
last ventral of the male is in all examples unusually and widely 
exposed and is more deeply, roundly emarginate and impressed 
than usual. 
Attains dimidiatus new species 
Moderately elongate, widened posteriorly, head and thorax strongly shining, 
elytra moderately so. Head (cf) rufous anteriorly, vertex and occiput black; 
thorax rufous with black median stripe, elytra yellow in basal half, apical 
half black; metasternum and abdomen black, legs red, hind thighs dusky. 
Head as wide as the thorax, the latter suboval, wider than long, both polished 
and subimpunctate. Antennae black, pale at base, narrowly serrate, all the 
joints longer than wide, the outer ones nearly or quite twice as long as wide. 
Elytra impunctate or very nearly so. Length 1.9 to 2.2 mm. 
Southern California: Old Beach (Colorado Desert); one pair 
collected by Dr. Fenyes. 
The type described above is the male; the female differs in 
having the head, thorax and legs entirely rufous, the antennae a 
little shorter and scarcely serrate, head and thorax wider, the 
eyes relatively smaller, the pygidium more broadly roumled at 
