of the North American Orthoptera. 449 



Conn. (Norton.) Maine, (Packard.) Red River Settle- 

 ments, British Am. (S. H. S.) 



CONOCEPHALUS, THUNBERG. 



*1. C. ENSIGER, Harr., Report, 3d ed.; 163. fig. 79. 



(1862.) 



C. ensiger, Harr., Cat. Ins. Mass. ; 56. (1835.) 



Locus ta acuminata^ Stoll, Spectres ; PL VIII. a. fig. 27. 



(1813.) 



(Not Locusta acuminata. Linn, and De Geer, nor Locusta 

 acuminata, Fabr.) 



Mass., (H. Coll., Sanborn, Shurtleff.) Cape Cod, (S. H. 

 S.) Vermont, (H. Coll.) Conn., (Norton, S. H. S.) Il- 

 linois, (Mus. Comp. Zool.) Minnesota, (S. H. S.) Ne- 

 braska, (Mus. Comp. Zool.) 



* 2. C. ROBUSTUS, nov. sp. 



Either pea-green or dirty brown ; tubercle of the vertex 

 tipped with black, not extending, or but very faintly and 

 narrowly, down the sides ; lateral carinse of prothorax pale 

 yellowish ; wing-covers dotted with irregularly distributed 

 black dots, most conspicuous in the brownish individuals. 

 In form as in coloration, this species is much like C. ensiger. 

 The shape of the conical projection of the vertex is the same, 

 or a little stouter ; it is a larger species, much broader and 

 stouter than it, the wings broader, and when compared 

 with the hind femora, a little longer than they are in C. en- 

 siger ; the spines upon the under side of the hind femora 

 are larger than there, being noticed easily with the unas- 

 sisted eye; the ovipositor of the female is much shorter 

 than in C. ensiger^ and finally the insect is much broader 

 across the mesothorax, with a heavier sonorous apparatus 

 in the male ; wing-covers fully as long as the wings in the 

 male ; slightly longer than the wings in the female. The 

 only difference between this species and C. ensiger in col- 

 oration is the usual lacking of the spots on the wing-cover 



JOURNAL B. S. N. H- 57 NOVEMBER, 1862. 



