. Ants; their structure, development and behavior. FIG. 268. Dealated queens, workers and cocoons of Formica subintegra, nearlytwice the natural size. (Photograph by J. G. Hubbard and Dr. O. S. Strong.) 460 JATS. those of the typical form. In the Ute Pass and Florissant Canyon ofColorado I have- found localities abounding in slavele>s colonies likethe localities in Maloja, Samaden and St. Moritz in the Engadin. Asa rule, however, the colonies contain slaves and the ratio of these totin1 sangiiineii is usually much greater than it is in Europe. The aver-age ratio in seventy colonies on which
. Ants; their structure, development and behavior. FIG. 268. Dealated queens, workers and cocoons of Formica subintegra, nearlytwice the natural size. (Photograph by J. G. Hubbard and Dr. O. S. Strong.) 460 JATS. those of the typical form. In the Ute Pass and Florissant Canyon ofColorado I have- found localities abounding in slavele>s colonies likethe localities in Maloja, Samaden and St. Moritz in the Engadin. Asa rule, however, the colonies contain slaves and the ratio of these totin1 sangiiineii is usually much greater than it is in Europe. The aver-age ratio in seventy colonies on which I have made notes is sanguineato slaves, which is practically the opposite of the ratio given byWusmann for the European form. I have been unable to confirm his-tatement that the number of slaves decreases with the size of thecolony, as I have seen many large colonies with numerous slaves andmany small ones with few or none at all. As the typical forms of the fusca group of Formica: are confinedto Europe, our sanyitinca is found to ensla
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectants, bookyear1910
