FAMILY v.— TRYXALIN^. 123-. 



the edge of a hole which a car[)eiiter is boring. Many holes 

 were found." 



The females of this species can easily be confused with 

 the brown females of the next species, the Short-winged Green 

 Locust, from which they may be separated by the slight me- 

 dian carina of the vertex. 



GENUS Dichromorpha Morse (1896). 



Vertex much shorter than broad, somewhat declivent,. 

 convex, but more or less sulcate behind the distinct elevated 

 lateral carinee. These are straight or gently curved and 

 meet at an angle of 90 degrees or more in a blunt point. 

 The median carina is entire!}^ wanting, as are the lateral 

 foveolae. The frontal costa is sulcate above and below the 

 ocellus, with the sides gently divergent downw^ard, more or 

 less constricted just below the ocellus and near the vertex. 

 The face seen from the side is nearly straight. The antenna? 

 are a little longer (male) or scarcely as long as (female) the 

 head and pronotum. The disk of the pronotum is plain with 

 the three carinte very nearly straight and parallel. All are 

 cut distinctly behind the middle by the very faint principal 

 sulcus. The first and second transverse sulci are not visible 

 upon the disk. The lateral lobes oi the pronotum are per- 

 pendicular, longer than high, with the anterior and poste- 

 rior margins straightly oblique, the latter plainly sinuate 

 and the lower margin a little descending posteriorly, more 

 strongly ascending and sinuate anteriorl\\ The lobes of 

 the mesosternum are separated by a space broader than 

 long (female) or as broad as long (male). The lobes of the 

 metasternum are separated in the female by a space as long 

 as broad, in the male they are contiguous. The tegmina are 

 generally abortive sometimes well developed, in which case 

 the scapular area is not expanded. The anal field oi the 

 tegmina meets the discoidal field at an angle. The posterior 

 femora are stout and not banded. The posterior tibiae are 

 obscurely colored, with the apical spurs on the inner side not 



