NO. 1124. RETTSION OF THE MELANOPLI SCUDDER. 139 



h*. Interval between niesosternal lobes of male a little less than twice 

 as long as broad; proiiotum nnicolorous on disk, any lateral stripes 

 being confined to the position of lateral carinae. 



i 1 . Prozona of male feebly longitudinal; apical margin of sub- 

 genital plate considerably elevated and truncate; furcula formed of 



apically rectangulate lobes 128. yarrowii (p. 369). 



-. Prozona of male distinctly longitudinal; apical margin of sub- 

 genital plate considerably prolonged and subtuberculate; furcula 



formed of rounded lobes with a slight prolongation 



129. oUraceus (p. 370). 



/*. Interval between niesosternal lobes of male subquadrate; of female 

 transverse; prosternal spine short; tegmina maculate with roundish fus- 

 cous spots; eyes of male and head prominent, the front margin of the pro- 

 notum flaring to receive the head (28. Punctulatus series). 



</'. Of large size: furcula present as a pair of very small denticulations; 

 apical margin of male cerci broadly convex, feebly emarginate on the 



lower half 130. arboretis (p. 372). 



g 2 . Of medium size; furcula wanting; apical margin of male cerci 

 augulato-convex with no inferior emargiuation. 131. punctulatm (p. 371). 



1. LAKINUS SERIES. 



In this small and compact group the prozona of the male is longitu- 

 dinal, and the interspace between the mesosternal lobes in the same 

 sex longer than broad, sometimes twice as long as broad. The anten- 

 nae are rather short. The tegmina are but little longer than the pro- 

 notum, overlapping, and apically acuminate. The hind tibiae are glau- 

 cous (or pale red) with nine to twelve (normally ten) spines in the outer 

 series. 



The supraanal plate is subtriangular, with rather plane surface, 

 except for the rather prominent ridges bordering and forming between 

 them the median sulcus; the furcula consists of a pair of pointed slen- 

 der teeth but little longer than the last dorsal segment; the cerci are 

 very peculiar, enlarging and bullate beyond the base, but with angu- 

 lar imirgins, sulcate inferiorly, compressed but longitudinally convex 

 exteriorly, abruptly narrowing beyond the middle and incurved, ending 

 in a superior, short, flattened finger directed toward the tip of the 

 supraanal plate; the subgenital plate is very short and apically very 

 broad, subconical, with a strongly and abruptly elevated though 

 laterally brief apical margin. 



The three species belonging here are rather bulky insects, rather 

 above the medium size for the genus, and they range from southwestern 

 Nebraska and Colorado to central Mexico. 



i. MELANOPLUS MARCULENTUS, new species. 



(Plate X, fig. 1.) 

 Pezolettij- nutrcuJentus BRUNEI*!, MS. 



Brownish fuscous, often more or less testaceous. Head brownish 

 testaceous, tending to flavous above, where there is a rather broad 

 posteriorly enlarging median streak and a broad submedian brownish 



