XIII. N. meridionalis, Costa.—Structure of nest doubtful (see description in Ants and Spiders, p. 138). Found near Naples and in Ischia. M. Simon has discovered a spider in Corsica which he considers the same as that described by M. Costa under the name of meridionalis, but it seems desirable, in order thoroughly to establish this conclusion, that specimens of the spiders and their nests from these distant habitats should be compared together.
We can scarcely suppose that the real geographical distribution of the above-named twelve species is as restricted as it would appear to be from the above enumeration, and there is little doubt, I think, that many more habitats will be added in time. Indeed, our knowledge of the habits and distribution of these spiders can only as yet be said to be in its infancy, the whole subject being, for the most part, new and untrodden ground.
But, it may be asked, what are the chances in the future for the discovery of undescribed spiders and types of nests: and what reward of this kind may the travelling naturalist expect in order to compensate him for the time and pains which such a search demands, and which must divert him in a great measure from making other collections?
The reply is not doubtful.
Europe alone, most probably, contains many trap-*door spiders the specific characters and habits of which are at present unknown; and as for the warmer regions of other parts of the globe, we only know enough to lead us to surmise that still stranger and more startling discoveries await us there.
Dr. L. Koch's description of the very remarkable
