800 ruocKKnixas or tiik SATinSAi. Mrsursr, vouxx. 



Leii;:th of )>o(ly, male, iri.LT) in in., tiHinale, 'J.'{ nun.; ant«^nnae, male, 

 ]o mm., t'emiiic, H.5 mm.; tc^^mina, iiialo, 10.5 mm., female, 20.5 mm.; 

 L.nl t<>m()ra, male, 11 mm., t'tMnalc, Vl.'l'* mm. 



Two malts, .'{ females. Tape St. LucaH, Lower ralilornia, J. Xantus; 

 8onora, Mexiro, C. A. S«;liott. 



gi. MELANOPLUS CANONICUS. new species. 

 (IMute .\X, tig. 1.; 



TiUt<'Oteata('eona with a (listliu't feiTuj^lnons tliipfe. flead a little 

 ln'omiiiiMit, Mavo lnteoiis, Im'Iow witli a slijjht o'lva<*iM>us tiiijjc, abovo a 

 '•ttle streakt'd with fuwoiis an<l, in the male at lea.st, with a dark fus- 

 cous postociilar band; verte.v a little tumid, a little elevated above the 

 proiiotum, the interspace between the eyes rather narrow, equal to 

 (male) or a little exreedin^ (fennile) the width of the basal antennal 

 joint; fastij::ium rather strony:ly declivent, deeply (male) or shallowly 

 (fennile) suleate throujihout; frontal costa rather prominent above, 

 8trai<rht on a side view, just failing; to rea(di the (•ly|)eus, e(|iuil, a little 

 broader than the interspace between the eyes, feebly suleate at and 

 below the ocellus, punctate above, biseriately in the male; eyes pretty 

 larjie, rather ])rominent in the male, tlistinctly I'Miger than the infra- 

 ocular i)ortion of the jj^enae; antennae luteous, as long as the hind 

 femora in the male. Pronotum sube(iual, feebly expan<ling on the 

 metazona, the disk feebly convex and passing by a broadly rounded 

 shoulder into the subvertical lateral h)be8, which in the male are 

 marked on the upper half of the ]>rozona by a slightly mottled, glis- 

 tening, brownish fuscous band ; median carina disiinct on the metazona, 

 obsolete on the prozona; front nnirgin subtruncate, hind margin obtus- 

 angulate; prozona feebly longitudinal (male) or (juadrate (female), 

 slightly lo'iger than the closely punctate metazona. Prosternal spine 

 rather short, conical, erect, anteriorly appressed; intersjmce between 

 mesosternal lobes more than twice (male) or nearly twice (female) as 

 long as broad. Tegmiua a little surpassing the hind femora, moder- 

 ately slender, gently tapering, brownish fuscous, sometimes with a fer- 

 ruginous tinge, more or less feebly tlecked with obscure maculae in the 

 discoidai area; wings pellucid, very faintly infumate*!, the veins black 

 or blackish fuscous. Fore and nnddle femora of male feebly tumescent; 

 hind femora luteo testaceous, bifasciate with pale fusco ferruginous 

 above, the outer face feebly infusrated, the lower face luteous, the genic- 

 ular arc blackish fuscous; hind tibiae very i)ale glaucous, i)allescent 

 basally, the spines black in their apical half, ten to twelve in number 

 in the outer series. Extremity of male abdomen a little clavate and 

 recurved, the supraanal plate longer than broad, tapering at first 

 slightly then rapidly, the apex obtusangulate except for a slight pro- 

 duction, the surface nearly plane, the median sulcus slight and incon- 

 spicuous; furcula consisting of a pair of adjacent flattened plates, 

 very broad on basal third, then rapidly contracted, and continuing on 



