14 WHEELER— ANTS FROM BORNEO AND LUZON F SOE 
Described from a single specimen taken by Mr. John Hewitt on Bongo 
Mountain, Sarawak, Borneo. 
This species seems to be very close to the type of the genus, 
D. selebensis Emery of Celebes, which, however, is based on a 
female specimen. It differs from the worker of borneénsis in having 
the antennal scrobes extending to the posterior corners of the head, 
the antennal clava very indistinct and with the penultimate longer 
than the antepenultimate joint, and in lacking the ventral tooth 
of the petiole. From the other known species, D. fouqueti Santschi 
of Tonkin, the Bornean species differs in color and sculpture, in the 
shorter antennal scrobe, convex epinotal declivity, ete. 
Myrmoteras donisthorpei sp. nov. 
Figure 3. 
Female. Length 4.2 mm. 
Head large, including the eyes and excluding the mandibles, as long as 
broad, rather convex above, its short occipital portion about half as broad 
as the diameter through the eyes, separated from the higher anterior 
portion by a deep transverse groove; posterior corners of anterior portion 
prominent and angular. Eyes very large and convex, reniform; cheeks 
very short; ocelli very small. Mandibles much longer than the head, 
linear, parallel, flattened, their outer margins very feebly convex, their 
inner margins straight, dentate throughout, each mandible bearing four- 
teen teeth. The teeth on the basal two thirds of the margin are small, 
equidistant, gradually increasing in length distally towards the apical 
third which bears four long, equidistant teeth, alternating with small 
teeth, the penultimate tooth being acute and very small. Clypeus as long 
as broad, flattened and bilobed in front, convex and subcarinate behind 
in the middle. Frontal area distinct, triangular; frontal groove pro- 
nounced as far back as the anterior ocellus; frontal carinz small, vesti- 
gial, far apart. Antenns very slender, 12-jointed; scapes extending fully 
one fourth their length beyond the posterior border of the head; funi- 
culi filiform, not enlarged at the tip, all the joimts more than twice as long 
as broad; terminal joint slightly longer than the two preceding joints 
together. Thorax small, much narrower than the head; mesonotum con- 
vex in front, rising well above the pronotum, flattened behind, about as 
long as broad; epinotum as long as broad, in profile higher than long, its 
base and declivity subequal, meeting at a rounded obtuse angle. Petiole 
