Page:Supplement to harvesting ants and trap-door spiders (IA supplementtoharv00mogg).pdf/37

 order to intimidate their enemies, though Crematogaster is the only one which really possesses a sting.

Camponotus sylvatica has the same long legs and slender body as Formica cursor, and is of about the same size; the workers, which are of a dark brown colour, measuring about 3-1/2 lines in length.

Perhaps it may be well, in concluding these remarks on Harvesting Ants, to call attention to the principal questions which still await solution. The first is one which any observer who travels in Central Europe during the summer may help to solve.

1. Do any ants collect and store seed in Switzerland, Germany, North France, England, or indeed in any of the colder parts of the world?

2. What are the habits of Atta structor and A. barbara when living, as they are known to do, in Switzerland, Germany, and Northern France?

3. How do the ants contrive to preserve the seeds in their granaries free from germination and decay?

4. How are the seed-stores of tropical ants disposed below ground, and of what do they consist?

5. Do harvesting ants exist in the southern states of North America, in Australia, New Zealand, or at the Cape?