no. 1124. REVISION OF THE MELAXOPLISCUDDER. 341 



tinct throughout though slight ; lateral carinae obscure on the prozona, 

 the middle of the prozona tumid on the tipper half of the lateral lobes; 

 transverse sulci of prozona distinct throughout, not severing the median 

 carina. Tegm in a considerably longer than the body. Supraanal plate 

 of male (so far as can be seen on the single specimen in which the parts 

 are somewhat concealed) semiovate, broadly rounded apically, longer 

 than broad; the forks of the furcula slender, aculeate, parallel, approx- 

 imate, about half as long as the supraanal plate; cerci of moderate size, 

 compressed, the basal half tapering considerably, straight as seen 

 laterally, directed backward, the apical half a little incurved, nearly 

 equal, enlarging a little apically and notched at the tip; subgeuital 

 plate haustrate, rounded, entire. Basal tooth of lower valves of 

 ovipositor sharp, triangular, as long as broad. 



The specimens on which this description is based were collected in 

 alcohol, and little can be said of their color; there is a more or less 

 broken black postocular baud crossing the prozona on the upper half 

 of the lateral lobes; the hind femora may have been faintly banded, 

 the hind tibiae were probably red, with black spines, and there is a dis- 

 tinct row of fuscous rectangular spots down the discoidal area of the 

 tegmiua, especially in the female. 



Length of body, male, 21 mm., female, 22 mm. ; antennae, male, 9 mm., 

 female, 8 mm.; tegmina, male and female, 19 mm.; hind femora, male, 

 12.5 mm., female, 13.5 mm. 



One male, 1 female. Arizona, Thomas. 



I have never again seen the specimens on which this species was 

 founded, nor any others that could be referred to it. Accordingly, with 

 slight change in the phraseology, I reproduce the original description, 

 to which I may add the following unpublished notes, taken while the 

 specimens were still in my hands: The species has very much the same 

 general appearance as M. femur-rubrum. It has, however, entirely dif- 

 ferent abdominal appendages, as may be seen above, and also slenderer 

 tegmina, in the venation of which it closely resembles M. keeleri. The 

 prosternal spine is not very large, but moderately stout and bluntly 

 rounded at tip, a little appressed, and, on side view, not tapering; the 

 mesosternal lobes are much as in M. 'keeleri. The median carina is more 

 distinct on the metazona than on the prozona; the proportions of the 

 prozona are as in M. keeleri and the whole pronotum almost precisely 

 as in that species, with a little more rounded angle to the hind margin. 



116. MELANOPLUS KEELERI. 

 (Plate XXIII, fig. 1.) 



Caloptenus keeleri 'THOMAS !, Bull. U. S. Geol. Surv. Terr., I, No. 2 (1874), p. 69. 

 GLOVER, 111., N. A. Ent., Orth. (1874), pi. xvn, fig. 1. THOMAS, Rep. U. S. 

 Ent. Comm., I (1878), p. 42. BRUNER, ibid., Ill (1883), p. 60. 



Melanoplus tenebrosus SCUDDER!, Proc. Bost. Soc. Nat. Hist. (1879), p. 63; Cent. 

 Orth. (1879), p. 52. BRUNER, Rep. U. S. Ent. Comm., Ill (1883), p. 60. 



Of medium size; above very dark, almost blackish brown, the male 

 darker than the female; beneath dirty olive. Head not elevated, the 



