MANN: THE ANTS OF BRAZIL. 489 
with flattened surface, reflexed at base. Petiolar node thick; rounded 
above and at sides, a little broader than long; in profile rounded in 
front, nearly straight behind; the posteroventral surface of the petiole 
with a rounded projection. Ventral surface of mesothorax with an 
angulate tooth at anterior third. Gaster elongate oval, about two 
thirds as long as the thorax. Legs very long and slender. 
Head sublucid, finely, densely, and evenly punctate. Thorax 
shining, minutely punctate. Epinotum finely striate, sublucid. 
Node sublucid, more coarsely striate transversely. Gaster shining, 
finely striolate. 
Head without pubescence but with sparse, erect pile, antennae more 
coarsely pilose, funiculus pubescent, and with erect pile. Thorax, 
petiole, and node without pubescence, and but sparsely pilose. Gaster 
with scattered pubescence and sparse erect pile. Legs pilose, tibiae 
with a little pubescence. d 
Color dark ferruginous, the thorax lighter in color than the head 
or abdomen. Pile and pubescence white. 
Described from several workers taken at Abunda. This is a very 
aberrant form, resembling at first sight one of the elongate American 
species of Dolichoderus. The long neck and the divided epinotum 
widely separate this species from those others which have been in- 
cluded in the genus Dendromyrmex. 
Camponotus (Dinomyrmex) agra Smith has the occiput drawn out 
into a neck, and the head of the worker minor resembles that of 
Dendromyrmez branneri, but the thoracic structure is entirely different. 
The following key will serve for the identification of the species of 
Dendromyrmex. 
Form very long and slender; occiput drawn out into a narrow neck 
which is longer than broad; epinotum divided by broad trans- 
verse depressions into two portions (saddle-shaped in profile). 
brannert Mann 
Form more robust; occiput not long; epinotum not divided... .1 
ie thors brown, or yellowish: browll po. .76 os. oe ate ye 2 
Thorax black) orat least dark brews. 5.220. sly 8 2 ae 2 ere ind 4 
eRe Cs SMMMMIIN Et, ot. A ale Mayhew Suc Gx esi noobs as chartifex Smith 
Geaee oie NG tr SMB ee ess oe eet coat abate =, Ne te Aa a 
3. Head smaller; occiput faintly margined; color yellow. (British 
Gay Se chk Aten Malou werd a chartifex var. felis Mann 
Head larger; occiput not margined; color reddish. (Brazil) 
chartifex var. mamoreénsis Mann 
