PSYCHE. 



3()9 



so conspicuous in the allied species, the 

 shorter tegmina and antennae and pro- 

 portionally longer hind femora. 



Mdanoplus obovatipeniiis Blatclilcy. — 

 A rather uncommon species. I have 

 but eight specimens, four males and 

 four females, found in Washington 

 and Sebastian counties in September 

 and October. Compared with Indiana 

 specimens, the tegmina are more elon- 

 gate, and the cerci shorter. This 

 species is much more closely related to 

 AM. gracilis Bruner than would be indi- 

 cated by their position in Scudder's key. 

 This is the species I formerly mistook 

 for Mel. mancus Smith which was erro- 

 neously reported by me to be found in 

 Indiana. 



Melanoplus baconi, n. sp. — Medium size, 

 feirugineo-fuscous frequently suffused with 

 vinous red. Head moderately (<?) or not 

 (?) prominent; in front on the genae as 

 well as on the lower part of the Uiteral lobes 

 of the pronotum olivaceous flavous, more 

 (?), or less ($] completely suffused with 

 vinous red; vertex gently tumid and dis- 

 tinctly elevated above the pronotum; space 

 between the eyes a little more than once ($ ) 

 or nearly twice (?) as broad as the first 

 antennal joint; fastigium considerably (^) 

 or slightl3' ( ? ), sulcate ; frontal costa almost 

 equal throughout, not quite reaching the 

 clypeus, sulcate for a short (?) or consider- 

 able {$) distance below the ocellus, punc- 

 tate ; eyes only slightly longer than broad; 

 antennae rufo-testaceous f^$) or red (?) 

 infuscated apicall3', a little (<?) or decidedly 

 ( ? ) shorter than the hind femora. Pronotum 

 feebly enlarging posteriorly in the female 

 though the sides of the disk are parallel 

 behind the lirst sulcus or even distinctly 

 converging on the metazone, hardly expand- 

 ing in the male even below; the sides 



with abroad distinct piceouspostocular stripe 

 strictly limited to the prozone and generally 

 contrasting strongly with the color below, 

 about as distinct in the female as in the 

 male ; disk gently rounded passing into the 

 lateral lobes by a very rounded shoulder (? ) 

 or distinctly angulate (J); median carina 

 distinct and sharp, though slight, on the 

 metazone ; on the prozone slight and 

 fre(|uently wanting between the sulci, 

 especially in the male; hind margin strongly 

 but obtusely and roundly angulate; prozone 

 scarcely longitudinal even in the male but 

 little longer than the densely but shallowly 

 punctate metazone ; prosternal spine long, 

 cylindrical, blunt, retrorse; space between 

 the mesosternal lobes variable, one and a 

 half times as long as broad {$) or one and 

 a half to twice as broad as long ( ? ). 

 Tegmina abbreviate more than half the 

 length of the abdomen, five sixths (female) 

 the length of the posterior femora, costal 

 and anal margins evenly and gently arcuate, 

 apex blunt, the dorsal and lateral fields 

 angularly separated, the former plain gener- 

 ally infuscated, the latter frequently with a 

 median row of smaller spots. Fore and 

 middle femora quite tumid in the males ; 

 hind femora testaceous, with the disk of 

 the exterior face irregul.arly infuscated, 

 rarely bifasciate with fuscous, the upper 

 and inner faces plainly bifasciate, inferior 

 face flavous, more or less suffused with red. 

 Tlie geniculation black or brown, hind 

 tibiae red without black at the base and 

 without sub-basal pallid annulus, spines 

 black. Extremity of male abdomen moder- 

 ately clavate considerably recurved; the 

 supra-anal plate triangular, longer than 

 broad with a very acute angulate apex and 

 with gradually and considerably elevated 

 sides and a broad median sulcus which is 

 percurrent though narrowing apically and 

 interrupted near the middle of the plate by a 

 sharp and high transverse plication ; furcula 

 consisting of a pair of small widely separated 

 diverging denticulations about as long as 



