228 THE CANADIAN ENTOMOLOGIST. 



different orders, no character is left to bring the Embia nearer to Perla 

 than to Termes. Bunneister, 1. c, p. 768, is undoubtedly right in bring- 

 ing them in a family of its own Embidae, near the Termitina (with whom 

 they had been combined), because they differ from them by all parts of 

 their body. 



After a detailed study of the species before me (their number is much 

 larger than the number in the hands of former students), and after due 

 consideration, I believe there is no doubt that Embia is nearer to Termes 

 than to any other famil}'. Concerning the wings, I have given my opinion 

 before in a very detailed manner, that they are not only homologous to 

 the wings of Termes. the basal squama not being developed or aborted, 

 but that the wings by tlieir identical size, shape and venation cannot be 

 compared with those of any other family. The abdomen, except being 

 mostly more ovoid in lermes, is for the segment mediaire and the number 

 of segments homologous ; the mouth parts are alike, except the 5-jointed 

 max. palpi ; the antennae are similar ; the legs are very different, the 

 tarsus 3-jointed. The eyes are in the front corner of the head, while in 

 Termes they are in the hind corner. 



The relationship with the Psocina is indicated by the presence of a 

 spinning organ opening on the labium, and by the similar distance of the 

 coxae in some genera. Embidopsocus resembles Embia more than Termes, 

 but is in fact a true Psocus, with the habitus of an Embia and withTermit 

 wings. In another paper I may give more about this curious insect. 



A comparison with the Odonata and Ephemerina seems not to be 

 needed. Both show an important character of the Embidae, the situation 

 of the eyes in the front corner of the head ; the arculus of the Odonata 

 is imitated in the wings of the Embidina. 



The statement by Wood-Mason that Embia belongs to the true 

 Orthoptera as a very degraded form — a statement which will probably be 

 proved by him in a later paper — induced me to consider the aberrant 

 forms of this group. The external forms of the curious genus Cylin- 

 drodes, have indeed some analogy with the apterous female of O. Michaeli. 

 We know very little about Cylindrodes. C. Cainpbelli, from Melville's 

 Island, Australia, was figured in Griffith's Animal Kingd.,vol. xv., pi. 131, 

 with details of the mouth parts and legs, and described by R. Gray, Mag. 

 N. H., 1S37, "^o^- i-; P- 142? from one imperfect specimen, as belonging 

 near Gryllotalpa. Burmeister makes of it a group of Gryllotalpa, and 

 Serville a genus following Gryllotalpa. Saussure, Mel. Orthopt., 1877. 



