458 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
thickened at tips, extending one fourth their length beyond the occipital 
corners. Joints 3-8 of funiculus a little broader than long, gradually 
increasing in length towards apex; the basal joint of club one half as 
long as the terminal. Eyes small, located at the middle of sides of 
head. Mandibles long and rather slender with about seven short 
teeth on the blade, the penultimate and apical larger than the others. 
Pronotum concave at middle of front; on the side anteriorly with a 
sharp, minutely tuberculated crest; the median surface posteriorly 
with a pair of short, parallel tuberculated ridges, half as far apart as 
those lateral and anterior, extending half the length of the pronotum 
with a depression between them and the lateral margin; inferior spine 
short and acute. Promesonotal impression strong. Mesonotum 
lower than the pronotum but higher than the epinotum; at sides with 
a bidentate crest. Epinotum with subequal base and declivity, the 
latter very abrupt. Base margined with tuberculate ridges, which 
terminate in spines, which are stout, acute and about half as long as 
the declivity. Petiole elongate; the node globular, shorter than the 
distance to point of insertion. Postpetiole twice as broad as petiole, 
broader than long, sides evenly convex, posterior border truncate. 
Gaster elongate, broadest in front of apex of first segment. Legs 
long and stout. 
Body and legs subopaque, except the gaster, the first segment of 
which is shining. Head with very small tubercles arranged in more 
or less circular patterns on the front. Mandibles longitudinally 
striate, sublucid. Body everywhere finely granular, with minute 
tubercles, which are coarser on the petiole, postpetiole, femora, and 
tibiae, and more scattered on the gaster. 
Body, antennae, and legs with thick, short, curved, recumbent, 
glistening hairs. 
Color light ferruginous, the blades of the mandibles darker. 
Female (deailated). Length 4 mm. 
Head similar to that of worker. Pronotum transverse, flattened 
above, the sides thinly margined, the margins projecting anteriorly 
as blunt lateral teeth. Mesonotum slightly rounded above, with a 
longitudinal pair of denticulated crests at sides and middle and between 
these a simple carina. The posterior border of scutellum extending 
into a pair of blunt spines. Epinotum with two long, strong spines 
at angle of base and declivity, which are equal. The rest similar to 
worker. 
The color is somewhat darker, being light reddish brown. 
Described from one female and several workers collected at Madeira- 
