NO. 1124. 



OF THE MELANOPLISCUDDER. 33 



ft 1 . Interspace between the mesosternal lobes of male about twice as long as broad, 

 the lobes rounded on their inner margin ; cerci of male feebly and regularly incurved 



throughout, almost half us broad as the supraanal plate 1. concinnus (p. 33). 



b 2 . Interspace between the inesosternal lobes of male only a little longer than 

 broad, the sides parallel; cerci of male bent distinctly inward on apical third, 



much less than half as broad as the supraanal plate 2. palmer i (p. 34). 



A 2 . Sides of the disk and of the upper half of the lateral lobes of the pronotum with 

 no distinct stripes ; cerci of male narrowed before the middle 3. pilosus (p. 35). 



i. RHABDOTETTIX CONCINNUS, new species. 

 (Plate III, fig. 2.) 



Body very sparsely but not briefly pilose, brownish testaceous above, 

 luteo-testaceous below, marked with blackish castaneous and dull 

 luteous and more or less tinged with ferruginous. Head luteo-testa- 

 ceous, profusely and delicately mottled with fuscous on face and genae, 

 the vertex black or blackish castaueous, bounded by a narrow luteous 

 stripe behind the upper part of the eyes, separating from it a broad 

 black or blackish band behind the middle of the eyes, which again is 

 followed by a broad luteous patch behind the lower part of the eyes; 

 face, including frontal costa and the front of the genae, sparsely punc- 

 tate; antennae luteo-testaceous more or less infuscated. Pronotum 

 with a very broad, median, blackish castaneous band crossing the pro- 

 zona, separated from an equally broad, similar, percurrent, posteriorly 

 widening baud on the upper half of the lateral lobes (but here less pure) 

 by a rather narrow dull luteous stripe, the continuation of that behind 

 the upper part of the eyes; metazona mostly ferrugineo-testaceous ; 

 rest of the body blackish castaneous above, with a broad, irregularly 

 margined, broadening, dull luteous or luteo ferruginous, median stripe; 

 lower portion of lateral lobes of the prouotum luteous or luteo-testa- 

 ceous. Tegmiua black in the interstices of the pale testaceous veins. 

 Fore and middle femora greenish with a very strong ferruginous tinge 

 above; hind femora ferruginous above, yellowish luteous beneath, the 

 outer face olivaceous more or less infuscated above, the genicular 

 arc piceous; hind tibiae olivaceous green, the apical half of the spines 

 black, ten spines in the outer series. Supraanal plate of male triangu- 

 lar with slightly convex sides, the lateral margins slightly raised, the 

 inner half tectate with a rather deep and slender median sulcuson the 

 summit, extending from the base to the middle of the plate; furcula 

 consisting of a pair of scarcely projecting exceedingly broad plates, 

 each of which is much more than half as wide as its half of the supra- 

 anal plate beneath it, separated from each other by a considerable 

 interval; cerci thinly laminate, the outer side slightly convex trans- 

 versely, pretty broad, the basal half subequal, the apical half bent 

 strongly upward in a curve, the apex rounded, the whole gently 

 incurved, subfalcate; lateral margins of the subgenital plate slightly 

 and broadly convex as seen from the side, falling toward the apex, 

 which is not at all angulate; pallium capable of erection as a high 

 pyramid. 



Proc. N M. vol. xx 3 



