1948] 
Brown — A New Discothyrea 
39 
with knife-edged inner (masticatory) borders and acute 
apices. Antennal scapes massively clavate, their respec- 
tive funiculi eight-jointed, the last joint exceptionally 
large and heavy. Eyes a little larger than most Dis- 
cothyrea , with more than 12 and less than 18 ommatidia 
in each, situated just above the anterior quarter of the 
sides and a little toward the front or dorsal side of the 
head. 
Fig. 1. Discothyrea remingtoni new species, worker. A, petiole and 
adjoining segments in profile; B, antenna. 
Thorax not radically different from the usual run of 
Discothyrea , rather stout, with blunt, rounded humeral 
angles; epinotal teeth low and blunt, their bases ex- 
tended dowu the sides of the epinotal declivity as low 
vertical lamellae. The teeth are located somewhat far- 
ther down the epinotal declivity than in Emery’s figures 
of clavicornis in the Genera Insectorum and in the ori- 
ginal description of that species (1). 
The petiole is in the form of a thickened disc divided, 
in at least the dorsal half, by a transverse sulcus into an- 
terior and posterior low, rounded rims, the central planes 
of which are parallel to each other, the anterior being 
slightly the larger of the two. Seen from the rear, the 
profile gives the effect of a semicircle within a concentric 
semicircle, the anterior rim being the outer semicircle and 
the posterior-the inner. The posterior rim is truncate at 
its highest point, tEus providing a collar for the reception 
of the base of the first gastric segment. The sulcus which 
runs around the dorsum ends halfway down the sides of 
