170 bulletin: museum of comparative zoology. 



This form resembles the var. ambulans Emery of Buenos Aires 

 in the length of the antennal scapes in the soldier and worker but 

 differs in color, Emery's form being dark brown like the type of the 

 species. 



16. Wasmannia auropunctata Roger. — One dealated female and 

 many workers from Sauteurs and Richmond Hill. 



17. Cyphomyrmex rimosus Spinola. — Numerous workers and two 

 dealated females from Richmond Hill. 



18. Myrmicocrypta brittoni Wheeler. — Four males and twelve 

 workers from a single colony found in the sand of the sea-shore at 

 Point Saline. The male, which has not been described, differs from 

 that of other species of the genus (M. dilaccrata Forel, snbnitida Forel, 

 godmani Forel and tmcinata Mayr) in lacking the various crests, 

 teeth and spines on the head and thorax. These regions in brittoni 

 are all smooth and unarmed. The head is like that of the worker 

 but smaller, with large eyes and ocelli; the thorax has a convex 

 scutellum and the epinotum has small blunt elevations in the place of 

 spines or teeth. The genitalia are large and exserted and quite 

 unlike those of dilaccrata. The surface of the body and appendages 

 is opaque and very finely granular or punctate, with short, scattered 

 and appressed, yellowish hairs. Color black; mandibles, funiculi, 

 tarsi and genitalia yellowish; scapes and legs brown. Wings grayish 

 hyaline, with very pale, almost colorless veins and stigma. Length 

 2.3-2.6 mm. 



In the absence of the ridges and spines on the head and thorax and 

 in the shape and large size of the genitalia, the male M. brittoni differs 

 so much from the males of the other known species, that it may have 

 to be placed in a distinct genus or subgenus. This had better not be 

 done, however, till we have more material of the various species of the 

 genus and especially the females, which seem to be unknown in all the 

 species except M. uncinata. 



Dolichodcrinae. 



19. Iridomyrmcx iniquus Mayr. — Numerous workers, males and 

 females from several colonies nesting in the ground at Grand Etang 

 and Sauteurs. 



20. Dorymyrmcx pyramicvs Roger. — Several workers of the typical 

 form from Sauteurs. 



