28 
so oil the middle one, but becoming obsolete toward the trout : posterior lateral mar- 
gin, perpendicular from tin- humeral (entering) angle one-third the way down. 
then curving forward to the posterior lateral angle which is obtuse and rounded' 
the (entering) humeral angle is sharply denned, and in this respect differs from Mi 
femur-rubrum and M. atlanis; the apex is obtuse-angled (about 100° rounded at the 
point; posterior lobe minutely and shallowly punctured throughout; the anterior 
lobi - smooth with a few or no punctures except along the lower margins of the sides. 
Tegmina and wings extending beyond the Tip of the abdomen from one-fourth to 
one-third their length; the tegmina arc oi nearly uniform width throughout 
slightly curving upward at Their extremity; wings a little shorter than The Tegmina. 
very thin and delicate ; nerves and nervules very slender. Abdomen, and in fact 
the whole inseer more slender Than usual in thi- uenus ; but This appearance i- 
partly due to the elongated wings: cerci very small, triangular or tooth-shaped, 
not extending across The segment on which They rest; valves of The ovipositor quite 
prominent, especially the upper pair which are more than usually exserted, -harp at 
the tips and deeply excavated above. The posterior femora usually extend to or 
about to the tip of the abdomen. 
Color. — Reddish brown with fuscous spots. Head and pronotum back to the pos- 
terior sulcus, reddish brown, varying in depth of color in individual-: the face some! 
times of a lighter and brighter red than the pronotum. sometimes darker, assuming 
a dark purplish hue; the posterior loin- ot the pronotum is generally a pale olive 
brown, its lighter color contrasting somewhat distinctly with the darker -hades of 
the anterior portion. Some individuals exhibit much lighter colors than here de- 
scribed, varying from dark brown to a dull yellow. The dark line on the side of tlu- 
head and pronotum. usually so conspicuous in the closely allied species, is generallj 
obliterated in this species by the dark-brown color; but it usually appears distinctly 
in specimens which have been immersed in alcohol, and is also manifest in the pale 
individuals, but is broken np by pale spaces and lines, and is rather narrow; the 
eyes, -Inning black: tegmina. ash brown, more or less tinged with reddish brown at 
the base and fading toward the apex; in the middle field, commencing near the base, 
where this field comes to a point, is an irregular row of fuscous dots, usually single 
to win-re the thin portion commences, now and then a double dot appearing: from 
this point to the apex they decrease in size and distinctness, and spread over the en- 
tire width: as a general rule the inner field i- marked with a few fuscous dots: in 
some individuals a few quite distinct are seen, in others they are very minute and 
dim. and not unfrequently they are entirely wanting. Wings transparent, with a 
very slight yellowish tinge at the has.-: nerves and nervules ot the costal area and 
apex black; rest pale. The abdomen is generally a glossy brown, with the posterior 
margins of the segments pale: venter yellowish or pale brown: sternum pale brown 
or yellow; anterior and middle legs usually rufous, but varying from reddish brown 
to pale honey yellow. Posterior femora with the disk reddish brown, sometimes 
showing dim outlines of oblique band.-: the inner face and lower carina- yellowish] 
the latter usually tinged with red: the upper carina and upper portion of inner face 
yellowish, marked with three large black spot- or partial bands — one at the base, 
the other two equally spaced in the middle area : apex or knee black, or with a black 
crescent each side. The posterior tibise vary in color from bright red to pale yel- 
low, and in some cases to lduish. 
Male. — Differs from The female as follow-; I- somewhat smaller and shorTer. but 
the wings are about as long as tho-e of the female: the abdomen is enlarged or 
widened posteriorly and strongly curved upward at the apex: The last ventral seg- 
ment being elongated, rounded and narrowed upward like the prow o\ a boat, and 
is disTinrrly notched at The tip, The lips or lobes somewhat Tubercular in form. This 
part oi The apical segment is covered with minute scattering hairs. This notch 
forms one of the chief characteristics of the species, at least the most important one 
in distinguishing it from ftmur-riibrxm. The supra-anal plate or triangular piece 
above the anal opening is sharply bicarinate longitudinally: the tooth-like append- 
