210 THE CANADIAN ENTOMOLOGIST. 



ampliate pronotum, and the great development and posterior prolongation 

 of the last dorsal segment of the male, which almost conceals the cerci in 

 a dorsal view. The form of the cerci, too, differs considerably from that 

 which is characteristic of Platycleis. Owing to lack of material in this 

 subfamily, I prefer to let the specimens stand for the present in the genus 

 Idionotus. 



I have also specimens of the brachypterous form from Aweme, Man., 

 collected by Mr. Norman Griddle. It has also been reported from 

 Millarville and Calgary, Alberta, and the type specimen was collected by 

 Kennicott in "Arctic America," so that the known range of the species is 

 from Northwestern Ontario to Western Alberta and northwards into 

 Arctic America. 



This species is the only North American i)ectician known to be 

 dimorphic in wing-length. Several European species of Platycleis also 

 exhibit this feature. 



30. Ceuthophilus pallidipes, E. M. Walker. 



While camping in the woods near Temagami Falls, I found an imma- 

 ture female of this species inside the tent. No other specimens could be 

 tound in this district. 



31. Ceuthophilus terrestris, Scudd. 



A female of this species, labelled "Nipigon," was sent to me by the 

 late Dr. Fletcher. I have not met with it in Northern Ontario. Con- 

 siderable search for Ceuthophi/i was made on Mt. McKay, but without 

 success. 



2,2. Gryllus Pennsyhnnicus, Burm. 



Common on Bear Island and occurring in small numbers in many 

 parts of the Temagami District. Not found at Fort William nor at Nipigon. 



I am convinced that this species is not specifically distinct from G. 

 abbreviatus, Serv. Every gradation exists between typical examples of 

 both forms. The ovipositor is certainly relatively longer in the larger 

 examples as a general rule, but this distinction is by no means constant, 

 nor does the relative size of the head in the male offer any reliable 

 diagnostic character. 



G. Pennsyhnnicus seems, in fact, to be a depauperate form of G. 

 abbreviatus, having much the same relation to it that Nemobius fasciatus 

 abort ivus, Caud., bears to typical N. fasciatus. The name Pennsylvania^ 

 having priority, abbreviatus must fall to the rank of a varietal name. 



