V0 1124. nKrisi(K\ (tF Tin: mi::.asovli—sci itDin. 3(;<) 



lidfTf^s: fnronln consistliijr of a pair of snbsoiiiirircular <listnnt loUrs, 

 jnqjectin/; from tin* middle of the tliickeiicd platrs occujiyiii^ the inner 

 jKtrtioii of the last <lor.sal s«*i;ment. the pnjjeetin;; portion lyiii;; outside 

 the bases of the ridj^es bordering the basal sulcus of the supniaiial 

 plate: eerei larj^e, broad, and rather stout, apirally a little ineurvetl, 

 broadly eonstrieted inesially as seen from the si<le, the apical portion 

 trian},Milarly expanded above, truncate after a slijiht expansion below, 

 the api«'al niar;;in broadly convex. subtrun<'ate; infracercal plates about 

 as Ion;;' as the supraanal |date, in the apical half a iittleex]>anded Ix'yond 

 the lateral mary:ins of the same; snb^enital jdate moderately mirrow, 

 considerably prolon^-ed and elevated apically, as well as thickened. 



Tien;;th of body, male, 3i5 mm.; antennae, circ. 10 mm.; tegmina, 2."> 

 mm.; hin<l femora, IS. 5 mm. 



One male. Lerdo, Duian^o, Mexico, November (L. IJruner). 



This species is rather nearer to .1/. femorntiis than to .1/. hirittattm, 

 though geographically separated more widely from the former. 



128. MELANOPLUS YARROWII. 

 (I'luti- XXV, ti^'. 2.) 



Calopietuis t/arrotvii Thomas, liep. ti»'ol. Cieo^v". Kxpl- 100th Mev,, V (IH?."*), p. 

 SH4, j.l. xi.v. lig. 5; Kcp. T. S. Knt. Coiimi.. I (18"*<), p. 4:i.— Hhi XKit, il.i«l.. 

 Ill (1SS3), p.(;(». 



Light brownish yellow, somewhat cinereous, nean^ uniform. Head 

 nejirly uniform, liardly darker above, the vertex gently tumid, the 

 interspace between the eyes not very broad, distinctly ntirrower than 

 the frontal costa, the fastigium feebly sulcate throughout; frontal costa 

 moderately broad, slightly broader below than above, failing to reach 

 the clypeus, very feebly and broadly sulcate below the ocellus, j)unctate 

 on either side; eyes moderate, only feebly prominent, liardly longer 

 than tlie in fraocular portion of the genae; antennae red. Pronotum 

 feebly enlarging apically, the front margin truncate^ the liind margin 

 bluntly and very obtusely angulate, the disk nearly i>lane, the lateral 

 lobes subvertical; median carina feeble, subobsolete between the sulci; 

 lateral carinae very rounded ; prozona nearly smooth, scarcely longi- 

 tudinal (male) or quadrate (female), but little longer than the metazonn, 

 its niiddle sulcns transverse, the ])osteri<u sinuate; metazona closely 

 and rather finely punctate; ])ronotum without markings except a faint 

 slender tlavous streak along the discal side of the lateral carinae and, 

 in the male at least, some irregular blackish fuscous blotches on the 

 lateral lobes. Prosternal spine moderately long, conico-cylindrical, 

 l>lunt, erect. Tegmina reaching the tip of the hind femora, brownish 

 testaceous without markings, tapering very gently and regularly to a 

 well-rounded tip; wings pellucid with a feeble greenish tinge, the veins 

 and cross veins fuscous only above the anal area, except to a slight 

 <lt gree. Hind femora olivaceo-testaceous, more or less infumated above 

 and on the outer face, the lower carina of the outer face tiavous. and 

 Proc. N. M. vol. XX L'4 



