44 Journal New York Entomological Society. [V°'- ^^• 



The discrepancies between the text and the figures are unfortu- 

 nate and need explanation. 



THE ANTS OF GUAM. 



By William Morton Wheeler, 

 Boston, Mass. 



Dr. L. O. Howard has kindly sent me for identification a collec- 

 tion of ants from Guam, the most important of the Ladrones or 

 Marianne Islands. This collection, made, apparently with consider- 

 able care, by Mr. David T. Fullaway, of the Hawaiian Experiment 

 Station, is sufficiently extensive to show that the ant-fauna of the 

 little island is made up very largely of the " tramp " species that 

 occur on the other small volcanic Pacific islands such as those of the 

 Society and Hawaiian groups. Only two forms, a subspecies of 

 Camponotus rcticulatns Roger and a variety of Prenolcpis minutula 

 Forel, are new to science. Most of the others are well-known tropico- 

 politan or paleotropical forms. The various species, subspecies and 

 varieties are enumerated in the following list: 



1. Ponera punctatissima Roger subsp. schauinslandi Emery. 



A single winged female, agreeing very closely with specimens of 

 the typical punctatissima sent me by Mr. Horace S. J. Donisthorpe from 

 the hot-houses of Kew, England. This specimen is, however, not 

 quite 3 mm. long and has the petiolar node somewhat more attenu- 

 ated above than in the typical punctatissima and the mandibles more 

 slender as in the subsp. jugata Forel. In all these respects the Guam 

 specimen agrees with the subsp. schauinslandi described by Emery 

 (Zool. Jahrb. Abth. f. Syst., XII, 1899, p. 438) from the Island 

 of Laysan. It thus appears that the species, originally taken in the 

 hot-houses of Europe or out of doors only in the southern portion of 

 that continent and in the Canary Islands, has a wide distribution in 

 the warmer parts of the Old World. 



2. Platythyrea sp. 



A single male specimen, evidently belonging to this genus but not 

 referable to any of the Malayan species, which have been described 

 from worker specimens only. 



