190 DAVENPORT ACADEMY OF NATURAL SCIENCES. 



Length of body, d^, 17 mm., $.21 mm.; antennae, rf , 6 mm., ?, 

 5.75 mm.; tegmina, c? , 3-25 mm., ?, 4.25 mm.; hind femora, c/' , 10 

 mm., ?, 1 1 mm. 



8 d^, 8 $. Berkeley, Alameda Co., Aug. 21; and Benicia, Solano 

 Co., California, Aug. 26, A. P. Morse. 



This species closely resembles M marginatiis pauper, but differs 

 from it in its lighter color, apically rounded tegmina, more distinctly 

 and sharply punctate metazona, externally sulcate malecerci and more 

 bluntly conical subgenital plate. It is most nearly allied to the pre- 

 ceding species, from which it differs by its lighter colors (f;om which 

 its name is derived), its shorter male cerci and blunter apical tubercle 

 to the subgenital plate. 



CiNEREus Series. 



A single species has been added to this series through the collec- 

 tions of Mr. A. P. Morse in California. The table of the series as 

 given in my Revision (p. 135) may be modified to include it in the 

 group containing cyanipes and cinereus, as follows, using the initial 

 letters of that table: 



TABLE OF A PORTION OF THE SPECIES IN THE CINEREUS SERIES OF 



MELANOPLUS. 



i\. Furcula of male narrowing uniformly or almost uniformly throughout ; 



hind margin of pronotuni very obtusangulate cyanipes Brun. 



i^. Furcula of male with a considerable part of the apic;il portion equal 



and very slender ; hind margin of pronotum moderately obtusangulate. 

 7'. Nearly uniform, with only feeble markings ; lower apical angle of 



male cerci much produced inferiorly dealbatns sp. nov. 



fi. Considerably diversified in color and much beflecked ; lower apical 

 angle of male cerci but feebly or hardly produced inferiorly. 



cinereus Scudd. 



Melanoplus dealbatus sp. rov. 

 Plate VII f., Figures 7, S. 



Nearly uniform i)ale testaceous, with a feeble greenish tinge seen 

 most clearly in the males and on the clo>ed tegmina. Head rather 

 large and prominent, flavo-testaceous or dull flavous, with a faint, 

 broad, slightly fuscous postocular band, extending to the metazona; 

 vertex moderately tumid, somewhat elevated above the pronotum, the 



