1916. 1 NATURAL SCIENCES OF PHILADELPHIA. 127 



perplexities of the student, and the records of ferruginea from Florida 

 are either due to a misconception of the present species or are 

 referable to the young of A. buprestoides. 



Caudell, in his paper on the Walkingsticks of the United States, 13 

 has given, among other State records, Florida and Pennsylvania for 

 the present insect. The first of these records applies to A. bupres- 

 toides, while the second is due to a mistake caused by a "Tallulah, 

 Ga.," label appearing to be "Tallulah, Pa." 



The present authors in an earlier study of A. buprestoides, 1 * con- 

 fused nearly mature and differently colored specimens of that species 

 with the present insect; at that time A. ferruginea was not repre- 

 sented in their collections, its definite distribution was quite unknown 

 and the early descriptions of the two species were and are by no 

 means convincing. 



The distribution of A. ferruginea apparently extends from just 

 north of the Ohio River south over the Mississippi Valley to the 

 Gulf States, west to extreme southeastern Nebraska and eastward 

 through the Appalachians in Virginia and in the high portions of 

 the Carolinas and Georgia. 



The series taken at Wilson Gap was found under the bark of a 

 single log. 



AORIDID^]. 



On the Races of Xomotettix cristatus (Scudder). 



A ^tudy of the series of over four hundred and fifty-eight specimens 

 of the present species before us from the eastern United States and 

 Canada offers convincing proof that but one known species of 

 Nomotettix exists in this portion of North America. This species is 

 divided into five geographic races which are typical over certain 

 areas, but which intergrade so gradually that series of specimens from 

 numerous localities between those where the typical forms are found 

 show intermediates of every degree. The following key gives char- 

 acters which are by no means decided ; it attempts to define racial 

 characters as found in typical series. 



A. — Vertex moderately projecting in front of eyes, angular excava- 

 tion beneath it moderately deep in lateral aspect. 

 (Vertex in lateral aspect blunt and very broadly 

 rotundato-acute-angulate, dorsal surface of head weakly 



13 Proc. U. S. Nat. Mus., XXVI, p. 882, (1903). 

 14 Proc. Acad. Nat. Sci. Phila., 1907, p. 284, (1907). 



