276 Bulletin American Museum of Natural History. [Vol. XXIII, 



teen winged females from four colonies (Nov. 1 and 14). The females are 

 9.10 mm. long. The head, excluding the mandibles, is very little longer 

 than broad, convex and rounded on the sides behind the eyes, contracted 

 and concave in the region of the cheeks and with a broad, shallow occipital 

 excision. The tips of the antennal scapes reach to a little more than § the 

 distance between the eyes and the posterior corners of the head. The 

 body is dark brown, with the mandibles, clypeus, antennae, head, pronotum, 

 thoracic sutures, tarsi, venter, anterior and posterior borders of the gastric 

 segments dull orange yellow. The front and a large portion of the upper 

 posterior surface of the head dark brown. The wings have a pronounced 

 yellow tinge, with dark brown stigma and scapular vein; the remaining 

 veins being light brown. Pile and pubescence like those of the worker; 

 antennal scapes and legs with prominent erect hairs. 



31. Azteca foreU Emery. — Numerous workers of all sizes, agreeing 

 perfectly with Emery's original description of this species. 



32. Azteca schimperi Emery. — Numerous workers of all sizes taken 

 from a paper nest Avhich INIr. Johnson has forwarded to the American 

 Museum. This nest, which is represented in Plate XII, was suspended 

 from the branches of a tree. It is regular'y egg-shaped, 15 cm. long and 9.5 

 cm. through its greatest diameter, and consists of dark brown, hard and 

 friable carton. The outer surface is ornamented with broad flat carton 

 scales of a paler and slightly reddish color. The numerous openings, 

 scattered irregularly over the surface, are mostly elliptical and vary from 

 3 to 6 mm. in diameter. 



Camponotin^.. 



33. Prenolepsis longicornis Fahr. — Numerous workers. 



34. Prenolepsis guatemalensis Forel. — Several workers and males 

 which agree very closely with typical specimens of this species received 

 from Prof. Forel. 



35. Prenolepsis sp. — Three workers which I hesitate to refer to any 

 of the described species, as they are not accompanied by males. 



36. Camponotus abdominalis ustulatus Forel. — A number of soldiers 

 and workers and two winged females taken Nov. 15, from "an empty 

 hornet's nest." 



37. Camponotus abdominalis stercorarius Forel. — Several soldiers 

 and workers. 



38. Camponotus planatus Roger. — Several soldiers and workers of 

 a pale variety of this common neotropical species. 



39. Camponotus formicseformis Forel. — A number of soldiers and 

 workers. 



