of the North American Orthoptera. 447 



Fhylloptera curvicauda, Harr., Report, 3d ed. ; 161, note. 



(18G2.) 

 (Not Locusta curvicauda, De Geer.) 

 North Carolina, (H. Coll.) Georgetown, D. C, (Miis. 

 Comp. Zool.) 2 i. 



*2. M. AFFILIATUM, HOV. Sp. (Fig. 5.) 



This species is very closely allied to the preceding, but 

 is a larger insect; the hind femora are proportionally 

 shorter when compared with the wing-covers; the eyes are 

 less prominent than there, and the tubercle of the vertex 

 is slightly broader, with a broader and shorter medial fur- 

 row, forming rather a sort of shallow pit. A further dis- 

 tinction is seen in that the slightly hollowed front of the 

 prothorax has a very small central tooth, which does not 

 exist in M. retinervis. 



Length of wing-covers, 1.75 in.; breadth, .56 in. ; of 

 hind femora, 9 in. ; of ovipositor, .24 in. 4 $,2 9 . 



Mass., (H. Coll., Miss Edmands.) Maryland, (Uhler.) 

 Key West, (Mus. Comp. Zool.) Texas, (Mus. Comp. 

 Zool.) Nebraska, (Mus. Comp. Zool.) 



3. M. THORACICUM, UOV. Sp. 



Locusta maxima viridis alis latissimis, Sloane., Nat. Hist. 

 Jamaica; II. 201. PL 236, figs. 1, 2. (1725.) 



Tubercle of the vertex rather prominent, narrow, faintly 

 bilobed and divergent at the apex, with a narrow median 

 groove ; eyes as in M. affiliatum, but large ; prothorax con- 

 stricted anteriorly, the front border straight; side lobes 

 broader and more amply rounded than in other species; 

 lateral carinee quite prominent, transversely ridged, raised 

 at the posterior half quite considerably, and pinched where 

 it is highest ; hind border not so convex as in the preceding 

 species, and slightly angulated ; the top of the prothorax 

 is hollowed, and has a faint medial and transverse furrow; 

 wing-covers very closely and minutely punctured through- 

 out ; posterior tibiae triquetral, expanded upon the upper 



