Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . bdomen twonodes. The habits of our own species of this sub-divided genus differ very considerably from eachother, therefore it would be perilous to jump at con-clusions from one to the other. A prominent charac-teristic embracing all is that the pupa; are naked;namely, that they are not enclosed in cocoons. Inillustration of this dissimilarity of habits, I may addthat some of the species live habitually in societywith ants of a very different genus and division ofthe tribe; others i
Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature . bdomen twonodes. The habits of our own species of this sub-divided genus differ very considerably from eachother, therefore it would be perilous to jump at con-clusions from one to the other. A prominent charac-teristic embracing all is that the pupa; are naked;namely, that they are not enclosed in cocoons. Inillustration of this dissimilarity of habits, I may addthat some of the species live habitually in societywith ants of a very different genus and division ofthe tribe; others in close contiguity to such as are•equally distinct; whilst others, again, live totallyapart, and away, and by themselves. W. E. Shtjckahd. SAWS OE THE SAW-ELY. rj^HE apparatus with which the saw-flies are-*- provided for depositing their eggs is wellworthy the notice of microscopists. The following notes are not by any means to beconsidered as exhaustive of the subject; but aresimply intended to direct observers to a class ofobjects exceedingly beautiful, and offering a widefield for study and Fig. 256. Portion of Saw of Tenthredo x 160. The saw-flies {Tenthredo), which, by the way,derive their name from the apparatus with whichthe females are provided, belong to the order ofhymenopterous or membranous-winged insects, allhaving their abdomen terminated by an apparatus, which in the saw-flies, ichneumon-flies, and gall-flies, serves for the deposition of their eggs ; and inthe ants, bees, and wasps, is connected with apoison-gland, constituting the sting, with whichmany of us are but too well familiar. The ovipositor in the Tenthredo consists of twosaws, every tooth being itself serrated. These sawsare worked alternately; and to support them when ;
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