14 Transactions Texas Academy of Science. [ 30 ] 
name to the synonomy. This I believe to be an error. A . septrionalis 
is known to ocenr only in the Atlantic States (from Hew Jersey to 
Florida). I have never found it in Texas, hut instead have taken 
another species of Atta ( Trachymyrmex ) which agrees fairly well with 
Buckley’s morphological description. This is a dark brown species with 
pointed posterior angles to the head. It occurs near Austin (Walnut 
Creek), and I have seen dozens of its nests while riding through three of 
the large counties of the Trans-Pecos. Specimens examined by Prof. 
Emery were pronounced to belong to an undescribed species. Although 
this may be the Atta tardigrada of Buckley, I nevertheless hesitate to 
regard it as such, since its nests differ widely from Buckley’s description. 
These ants do not throw "the excavated earth in the form of a crater,” 
nor do they descend to cells "two or three feet beneath the surface by a 
hole about half an inch in diameter.” These dimensions are also far 
too great for McCook’s species (Cf. his figure and description, ’80). 
His specific name should therefore be restored for the eastern Trachy- 
myrmex and Buckley’s name should be abandoned, at least for the pres- 
ent. In further support of this conclusion I may add that there is in 
the State (in Brewster County) still another Atta (A. \Acromyrmex~\ 
versicolor , Pergande) which would also meet the requirements of Buck- 
ley’s description. The new Texan Trachymyrmex will be described in a 
subsequent paper. 
66. (Ecodoma (Atta) arborea; female, worker. Tex. 
This species was regarded as a synonym of Gremastog aster lineolata, 
Say, by McCook (’79, p. 187), and this determination was accepted by 
Mayr and Emery. I believe that it is possible to go still further, and 
to refer the form to the subspecies Iceviuscula, Mayr., var. clara, Mayr., 
since the queen of the subspecies lineolata has the head and thorax 
black or dark colored, whereas the queens of Iceviuscula have a yellow- 
ish red head and thorax and the latter merely streaked with black. 
Buckley describes some of the queens as having a yellow head, others 
as having the whole body black, "excepting the abdomen, which is 
banded with yellowish white.” This is either arrant carelessness of 
observation or confusion of several species. His notes on the' habits of 
G. arbor ea: "has cells in the decayed parts of trees and when disturbed 
often turns up its abdomen into a nearly vertical position; often seen 
going in ranks up and down trees,” together with the size leave no doubt 
that the form is Iceviuscula , var. clara, which is a very common and con- 
spicuous ant throughout Central Texas. Mayr’s name, though later 
than Buckley’s must be retained, however, as F. Smith published a G. 
arborea. early as 1858. 
67. (Ecodoma (Atta) bicolor ; worker. Tex. 
This form is regarded by Mayr (’86, p. 463) as a synonym of G. lin - 
