NO. 1124. REVISION OF THE MELANOPLISCUDDEP. 207 



portion being somewhat broader than the basal portion; t}ie anterior 

 apical angle is rounded, while the posterior one is somewhat acute, 

 dentiform;'' subgenital plate "slightly elongate and cone-shaped" 

 (Quotations from Thomas). 



Length of body, female, 26 mm,; antennae, 11 mm. (est.); tegmina, 

 5 mm.; hind femora, 18 mm. 



One female. Arizona, G. W. Dunn (L. Bruner). It was originally 

 described from southern Arizona. 



I have here adhered to iny original limitation 1 of Thomas's species, 

 although I was mistaken in supposing that the male I then had before 

 me was one of those used by him in his description, since he describes 

 the cerci as enlarged at the extremity, which they certainly were not 

 in the one then in my hands. Thomas's originals, so far as now pre- 

 served in the National Museum, all belong to my Mel. aridus, but for- 

 tunately a specimen in Professor Bruner's collection, although it is 

 only a female, enables me to fix the species. It may be separated from 

 Mel. aridus by the character which Thomas describes thus: "Posterior 

 margin [of pronotuin] truncate on the back [i. e., disk], or curved 

 slightly forward" [i. e., emarginate], the posterior margin in Mel aridus 

 being distinctly obtusangulate, though subtruncate. 



38. MELANOPLUS NITIDUS, new species. 

 (Plate XIV, fig. 2.) 



Pezotettix humphreyrii SCUDDER! (pars), Proc. Bost. Soc. Nat. Hist., XX (1879), p. 

 85; (pars), Cent. Orth. (1879), p. 74. 



Pale brown suffused with flavous and marked with black. Head 

 not prominent, or in the male scarcely prominent, pale flavo-testaceous 

 heavily mottled with brown, above almost wholly brown, with a broad 

 postocular piceous band margined with flavous (these markings not 

 seen in the female) ; vertex tumid, distinctly elevated above the pro- 

 notum (male) or feebly tumid, not thus elevated (female), the interspace 

 between the eyes nearly half as broad again as the first antenna! joint; 

 fastigium rather strongly declivent, deeply (male) or feebly (female) sul- 

 cate; frontal costa subequal, but slightly expanded at the ocellus, where 

 it is equal to (male) or broader than (female) the interspace between the 

 eyes, sulcate distinctly and throughout (male) or feebly and at and a 

 little below the ocellus (female) ; eyes rather large and rather prominent 

 especially in the male, elongate, very much longer than the infraocular 

 portion of the genae; antennae flavous, a little shorter than (male) or 

 about two-thirds as long as (female) the hind femora. Pronotuni sub- 

 equal on the prozona, expanding on the metazona, nearly uniform in 

 coloring except for a large flavous-margined, piceous, postocular patch 

 crossing the prozona, more or less broken and irregular in the female; 

 disk pretty strongly convex, passing almost insensibly into the lateral 

 lobes with no trace of lateral carinae, though the position of these is 



1 Proc. Bost. Soc. Nat. Hist., XX, p. 85. 



