484 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



8. Caloptenus Mviiiatus Say. 



The specimens of this species are few, and considerably under the 

 usual size; in fact, some are scarcely an inch long. 



9. Calo^ptenus occidentalis Thos. 



A specimen which appears to belong to this species is in the first col- 

 lection. I found it quite numerous at Glyndon and Moorhead in the 

 Eed Eiver Valley. It approaches very near to the variety (or species) 

 which Professor Riley has named C. atlanis. The size, appearance, 

 movements, bluish cast of the wings, all remind one very strongly of 

 the latter. The tip of the last ventral segment of the male does not 

 agree with either spretus, feinur-rubrum, or atlanis, being rather more 

 pointed than either, but not notched. 



As will be seen in the note on spretus, it may be possible after all that 

 these are but varieties of femur-ruhrum, and that the differences are 

 owing to climatic influences. 



10. Pezottetix horeaUs Scudd. 



11. Pezottetix speciosa Scudd. 



I find in the collections specimens which appear to belong to these 

 species, yet they vary somewhat from the characters given. 



12. Tettix granulata Scudd. 



A single specimen, which I have referred with some doubt to this 

 species. 



I add the following list of AcrididcE, which have been found in the 

 Pembina region, but are not represented in these collections, which are 

 given here in order to complete the Boundary Line Acridian List so far as 

 known. 



13. (Edipoda verruoulata. 



14. Stenohotlirus ceqiialis. 



15. Stenohothrus speciosus. 



] G. Stenobotlirus maculipennis. 



17. Stenohothrus wquciUs. 



18. Stenohothrus propinquans. 



The northern limit of some of these may be in Minnesota, but it is 

 presumable that most extend to the boundary; some are known to. It 

 is somewhat strange that (E. Carolina is missing from the collections. 



LOCUSTID^ AND GRYLLID^. 



The Locustidm, although very few in number, indicate a treeless region, 

 there being but a single specimen (a small Phaneroptera curvicauda), 

 which selects a bush or tree for its habitation. 



