259 



stages inhabiting the stem bases of Ghrysopsis villosa and 

 Lupinus sp. after the manner of our species on Gallirhoe. He 

 regards this as a result of the arid environment, the envelop- 

 ing froth with which the young surround themselves being 

 more easily maintained here than on exposed twigs ; and he as- 

 sumes that the adults oviposit on these herbaceous food plants 

 of their young. In the Illinois valley sand region there are 

 no wild conifers. 



Systematic Notes. 



Note 1, p. 230. — Bacunculus blatchlei/i. Walsh described his 

 Diapheromera velii from Nebraska males and Illinois females. Scud- 

 der, in his Catalogue, credits velii to Nebraska only. The common 

 prairie species of Illinois and Indiana, which we have been calling 

 velii., was represented in our collections mostly by female specimens, 

 but it was noted that the males indicated either that our velii was 

 not a typical Diapheromera or that it was a Bacunculus. Mr. A. N. 

 Caudell has received from Mr. W. S. Blatchley a pair of alcoholic 

 specimens taken in Indiana, and described them as Bacunculus 

 blatcMeyi. Mr. Caudell has kindly sent me a typical male velii 

 from Kansas, and 1 can now say with certainty that our specimens, 

 and also those in Mr. Blatchley's cabinet, which I had previously ex- 

 amined, are all Bacunculus blatcMeyi, to which . species Walsh's 

 females probably belonged. It is an inhabitant of rank prairie 

 vegetation like velii, while femorata is a forest species. I have also 

 taken blatcMeyi at Lake Geneva, Wis., as stated in the list. 



Note 2, p. 231. — Eritettix virgatusl This single female agrees 

 with Scudder's description and McNeill's key except that the sup- 

 plementary carinae of the pronotum are almost entirely obsolete. It 

 is possibly a new species. 



Note 3, p. ZSl.—AgeneoteUix scudderi. Hancock ('06) has col- 

 lected examples of Ageneotettix near Chicago, which, after compari- 

 son with a type specimen of A. scudderi, he has described as a new 

 species under the name arenosus, suggesting that the Minnesota, Illi- 

 nois, and Indiana scudderi of Lugger, McNeill, and Blatchley respec- 

 tively are probably also arenosus. According to him, arenosus, as 

 compared with scudderi, is smaller and more slender, with the vertex 

 right-angled, not acute-angled as in scudderi, the foveohe deeper, the 

 tegmina slightly shorter, etc. He has evidently overlooked Bruner's 



