Vol. xxx ] ENTOMOLOGICAL NEWS 65 



of Grylloblatta and Euibia major Imms adds further sup- 

 port to the contention that the Grylloblattids are quite closely 

 related to the Embiids, as was pointed out in the June, 1917, 

 issue of The Canadian Entomologist (page 213). 



In Ent. News, Vol. 26, page 337, attention was called to the 

 resemblance of the tergal thoracic plates of Grylloblatta to 

 those of the Dermapterous representative? of the superorder to 

 which the Embiids also belong, and the lateral thoracic sclerites 

 of the Grylloblattids are very like those of the Embiids, al- 

 though it must be admitted that the lateral thoracic sclerites 

 of Grylloblatta are also quite like those of the Isoptera, and 

 the ventral thoracic plates resemble those of the Zoraptera 

 and Mantids as much as those of any other insects. 



The legs of Grylloblatta are quite like those of the Blattids 

 (and Zoraptera) ; but I fail to find any other marked Blattid 

 features in the Grylloblattids although the investigations 

 of Dr. Walker (who is at present working upon the anatomical 

 details of the recently discovered males of Grylloblatta) may 

 bring to light other Blattid-like characters in the Grylloblattids. 

 The cerci of Grylloblatta are very like those of certain Plecop- 

 tera in regard to the relative lengths of the component seg- 

 ments, etc., as was pointed out in a paper published in Vol. 

 25 of the Journal of the New York Ent. Society (page 225), 

 and I also find a marked resemblance between the cerci of 

 Grylloblatta and those of the immature Dermaptera, such 

 as "D\scrihna" longisctosa, Diplatys, Karschlclla and other 

 earwings in which the forceps of the adult are preceded by 

 segmented cerci in the nymphal stages. On the other hand, 

 Ihe cerci of Grylloblatta also resemble those of the Man- 

 tids to some extent. The ovipositor of Grylloblatta could 

 easily be derived from the type found in certain Dermaptera 

 such as Hchinosotna; but on the whole, the ovipositor of 

 Grylloblatta is more like that of certain Mantidae. 



From the foregoing discussion, it is evident that Grylloblatta 

 resembles the Panplecoptera in regard to the least-varying 

 structures, while in regard to its body as a whole (with the ex- 

 ception of the body contour and its slender nature in which it 



