WHEELER": MYRMICINE ANTS FROM BRAZIL. 487 



but it differs so much from the other known genera in the structure of 

 the head and especially in the 2-jointed club of the antennae, the 4- 

 toothed mandibles and the regularly arranged, setiform hairs on the 

 dorsal surface, that it seems necessary to establish a distinct genus 

 for its accommodation. Apart from the head, the structure of the 

 body is very simple and primitive for. an Attiine ant, even simpler 

 and more primitive than in the genus Proatta, recently established 

 by Forel for a unique Sumatran species. It would be interesting to 

 know whether Blepharidatta hrasiliensis cultivates fungi like all the 

 other known American Attiini. 



Glamyromyrmex, gen. nov. 



Worker. Small, monomorphic; closely related to Strumigenys and 

 Epitritus, but differing greatly from these genera in the structure of 

 the head, which is suboblong, with deep scrobes on the sides above 

 the eyes for the accommodation of the antennae. Lateral border of 

 the head forming with the expanded frontal carina and external border 

 of the clypeus a translucent plate overarching the scrobe on each side. 

 Gular region rather narrow so that the eyes, which are small and in 

 front of the middle of the head are approximated and seem to be on 

 its lower surface. Upper surface of head rather flat, separated by a 

 very indistinct suture from the transverse clypeus. Ocelli, frontal 

 groove, and frontal area absent. Mandibles small, with distinct apical 

 borders, armed with a regular row of rather slender acute teeth. An- 

 tennae 6-jointed, funiculus with a 2-jointed clava. Thorax, pedicel, 

 and gaster much as in Strumigenys; petiole, postpetiole, and base 

 of gaster bearing spongiform appendages. Epinotum armed with a 

 pair of spines and with acute metasternal angles. Upper surface of 

 head smooth and shining, sculpture of remainder of body much as in 

 Strumigenys. Hairs slender and pointed, not clavate. 



Female. Head decidedly shorter and broader than in the worker 

 and narrowed in front, but otherwise of similar structure. Eyes 

 larger, ocelli well-developed. Remainder of body much like that of 

 Strumigenys, and the wings of similar but even more reduced vena- 

 tion, as the base of the cubital vein is largely obsolete, although the 

 anal vein is present. Petiole, postpetiole, and base of gaster with 

 fungiform appendages as in the worker. 



Male. Closely resembling the male of Strumigenys. Mandibles 

 very small, with only a single, apical tooth. Head of the usual struc- 



