288 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



the female; prozona distinctly longitudinal (male) or quadrate or trans- 

 verse (female), distinctly (male) or scarcely (female) longer than the 

 closely punctate metazoua, the principal sulcus bent angularly forward 

 slightly in the middle. Prosternal spine moderately long, cylindrical, 

 blunt, erect (male) or short, conical, feebly appressed, blunt, erect 

 (female) ; interspace between inesosternal lobes quadrate (male) or dis- 

 tinctly transverse but much narrower than the lobes (female). Teg- 

 mina either falling distinctly short of the tips of the hind femora, 

 generally about as long as the abdomen in the male, rather broad at 

 base, but rapidly tapering and at apex bluntly subacuminate (J/. e. 

 junius, Plate I, fig. #), or surpassing the hind femora, generally con- 

 siderably, rather broad, subequal, and at apex rather broadly rounded 

 (M. e. scandens, Plate I, fig./), brownish fuscous, generally immaculate, 

 but sometimes with rather a feeble and obscure narrow line of macula- 

 tion in the discoidal area; wings considerably (Jl/. e. junius) or a very 

 little (M. e. scandens) shorter than the tegmina, moderately broad, 

 hyaline, with brownish fuscous veins in the anterior half. Fore and 

 middle femora a little tumid in the male; hind femora ferrugineo- 

 luteous, the outer face often longitudinally infuscated, the inner side 

 of the upper face bimaculate with fuscous often obscurely, the genicu- 

 lation blackish and the under surface generally pule orange; hind 

 tibiae bright red, pale red, or pale dull citron, the spines black beyond 

 their base, nine to twelve, usually eleven, in number in the outer series. 

 Extremity of male abdomen clavate, a little recurved, the supraanal 

 plate sub triangular, longer than broad, feebly compressed in the mid- 

 dle, apically slightly acutangulate, the lateral margins elevated basally, 

 the median sulcus moderately deep and narrow, apically expanding 

 and obsolescent, its bounding walls rounded and not very high; furcula 

 consisting of a pair of parallel or subparallel, slender, tapering, acumi- 

 nate, somewhat depressed spines, somewhat less than half as long as 

 the supraanal plate and resting upon the ridges bordering the median 

 sulcus; cerci feebly subfalciforin lamellae lying in a slightly oblique 

 vertical plane, a little incurved throughout, feebly tapering in the basal 

 third or more, beyond subequal to the obliquely truncate and well- 

 rounded tip, the whole 'gently arcuate and much shorter than the 

 supraanal plate; infracercal plates very broad at base, rapidly narrow- 

 ing and not attaining the tip of the supraanal plate; subgenital plate 

 about half as broad at apex as at base, regularly narrowing by the 

 declivity of the feebly sinuous lateral margin, the apical margin not 

 elevated, well rounded, entire. 



Length of body (M. e.junius), male, 16 mm., female, 19 mm.; anten- 

 nae, male, 8 mm., female, 6.75 mm. ; tegmina, male, 11 mm., female, 

 10.75 mm.; hind femora, male, 10 mm., female, 10.75 mm. Length of 

 body (M. e. scandens), male, 18 mm., female, 19.5 mm.; antennae, male, 

 8.75 mm., female, 7 mm.; tegmina, male, 16.25 mm., female, 17.25 mm.j 

 hind femora, male, 10.25 mm., female, 10.5 mm. 



