148 



WILLIAM MORTON WHEELER. 



petiole much shorter, blunter and more rounded than in West- 

 wood's species. The surface of the body, even of the sides of the 

 epinotum and petiole are subopaque, the coarse punctures on the 

 thoracic dorsum are much as in burchelli, but those on the convex 

 dorsal portion of the first gastric segment are larger and more 

 scattered. The hairs are shorter, finer, less golden and decidedly 

 less abundant, especially on the legs, which in burchelli are very 

 pilose. Other structural details may be gleaned from the ac- 

 companying figures (Figs. 5, 6 and 7). 



This queen is obviously in the same physiological stage as the 

 two queens of E. burchelli described in my former paper. Owing 

 to the small size of her gaster she must be either a young indi- 

 vidual or, if the mother of the numerous larvae, workers and 



FIG. 8. Histerid ecitophile Euxenister wheeleri Mann, from bivouacking colony 

 of Eciton hamatum Fabr. Photograph by Prof. C. T. Brues. 



soldiers among which she was living, must have passed through a 

 fecund period. The freshness of her color, integument and 

 pilosity seems to support the former alternative. That the 

 colony from which she was taken was not as large as some 

 hamatum colonies I have seen, might also indicate that she was a 

 young individual or one in which the gaster had temporarily 

 returned to a contracted state after a first period (perhaps 

 seasonal) of fecundity. 



