874 ZOOLOGY— INSECTS. 



very dark, and indicate an approach to T. taiebrosus, with which it is evi- 

 dently closely allied. As will be seen, I have in this case, for the reasons 

 heretofore given, retained Sanssure's generic name, rejecting Stal's as unnec- 

 essary. I am aware he considers Saussure's genus as improperly character- 

 ized, and as combining incongruous elements ; but I have seen no evidence 

 on this point, and I think the characters as given in my Synopsis are suf- 

 ficiently limited and distinct to clearly define the group intended to be 

 embraced, and, as I had the typical species before me while preparing the 

 diagnosis, I am satisfied the rule that Stal has followed in other cases will 

 certainly retain Saussure's generic name. 



TOMONOTUS TENEBEOSUS, Scud. 



Plate XLIII, Fig. 3. 



Tomonotus pscudo-nietanus, Thos., Proc. Acad. Nat. Sci. Phila., 1870, 82. 



Tomonotus tenebrosus, Thos., Syuop., 107. 



ffidipoda tenebrosa, Scud., U. S. Geol. Surv. Neb., 251. 



Arphia sanguinaria, Stal, Eeceusio, 119. 



The two varieties of this species are represented in the collection. 



I give Stal's description of his A. sanguinaria for the benefit of Ameri- 

 can entomologists, and to show that I am correct in considering it as a 

 synonym. 



" Ferruginoiis-fuscous ; posterior margin of the pronotum black- 

 spotted ; elytra opaque, paler near the apex ; wings sanguineous, with the 

 broad posterior external margin and a short anterior ray dark-fuscous. 



$ , lenarth, 20 millimeters. Vancouver's Island. 



Very similar to A. sulphurea (Stal), but distinguished by the structure 

 of the head, the lower crest of the pronotum, and the sanguineous wings. A 

 very distinct (median?) carina running along the vertex, interrupted at the 

 base of the vertex ; apex of the vertex truncate, forming an obtuse angle 

 with the frontal costa (as seen from the side) ; margins elevated, and con- 

 verging posteriorly (?) then subparallel, becoming obsolete near the base of 

 the head ; frontal costa punctate, slightly narrowed at the base ( Stal's 

 specimen at this point was imperfect). Tempora smaller than in the pre- 

 ceding species. Crest of the pronotum equal throughout, not arcuate, 

 incised (not notched) between the lobes. Posterior femora black internally, 



