212 THE CANADIAN ENTOMOLOGIST. 



Fersica, so that in all eleven are known. The genera Embia and Olyntha 

 are again united, and separated by its trifid sector from Oligotoma with 

 a bifid one. I have before under O. Michaeli given the details of this 

 communication, and may only repeat that the so-called nymph (when the 

 description and the figures are correct) can not be a nymph, because the 

 characters of the wing cases of a nymph are not present. Perhaps it is a 

 short-winged imago. Later he has described 0. itisularis, a new species 

 from the Sandwich Islands. 



Mr. Wood-Mason, 1883, Proc. Zool. Soc. Lond., p. 628-634, pi. i, 

 published " A Contribution to our Knowledge of the Embidae." His 

 attention was drawn to this group by McLachlan before his return to 

 India. The memoir is very interesting, but there is left enough for further 

 observations. After the perusal of the Hterature he had formed the 

 opinion that the females were still unknown, and that they would prove to 

 be wingless and probably larger in size. Of course he has not known 

 Lucas's work, in which by dissection the female sex of winged imago had 

 undoubtedly been proven for Embia Mauritanica. He discovered larvge 

 of a species apparently living in society. All were males probably of 0. 

 Sau?tdersii. None of them showed the slightest traces of wings, but as 

 the size of the specimens is not recorded, the larval state is at least not 

 yet sure. He discovered also a large wingless female of 0. Michaeli. I 

 have before discussed this female, which seems to be doubtless a female 

 imago, though its belonging to O. Michaeli is still a conjecture. He 

 describes the male sexual characters of O. Saundersii, and speaks at some 

  length about the wings of the same species, giving enlarged figures of the 

 venation. I have to say more about them in the chapter treating the 

 characters of Embids. A paper promised on the differences between the 

 Embidae and the Perlidae has not yet been published. He considers the 

 Embidse as belonging to the true Orthoptera, being in some respects the 

 lowest term, and in others the lowest term but one, of a series formed 

 by the famiUes Acridioidea, Locustidse, Gryllidse and Phasma. 



I have now described seventeen species, only two of them I have never 

 seen (E. Mauritanica and E. Fersica), and three are now not before me 

 (S. antiqua, O. Braziliensis, O. ruficapilla). 



Characters of the Embidina. 

 Head. — The head is nearly free (caput liberum) ; the foramen occi- 

 pitale is not just at the end of the head, as in Raphidia, but a little before 

 and below ; the membranous part of the prothorax slides gently to the 



