IS94-] 237 [Morse. 
sion is very nearly vertical and less deeply sunken, the notch 
usually closed but the two lobes of the carina never overlajipino- 
as is often the case in scudderi. 
In bolli the tegmina are more obviously fasciate ; but the 
deckings are less sharply outlined and the colors more suffused. 
The wiXGS differ markedly in the two species. In bolU the 
fuscous band does not reach the anal angle as in scudderi ; its 
margins are less sharply defined ; it averages narrower in width, 
and the subcostal shoot is shorter. In the extended wing the 
lateral dimension of the yellow disk is less than the antero-poste- 
rior, while in scudderi they are about equal. The infuscation of 
the tip is fuinose in character : in scudderi usually maculose and 
the spots more or less fenestrate. 
In holli tlie hind femora are much like those of scudderi in the 
markings of the inner side ; but the hixd tibiae are very different. 
In holli these are colored as follows : at base black, followed by a 
pale annulus, be^'ond it a fuscous annulus melting into the red of 
the distal half ; the distal fifth is often infumated : while in scud- 
deri the entire tibia is coral-red, sometimes showing signs of a 
pale annulus next to base, the latter sprinkled with fuscous. 
The COLOR of holli is more lilaceous in tint, the maculatioiis less 
sharply outlined and more suffused with the ground-color. 
3. — S. ocidatum vs. S. aequale scudderi. 
Oculatuvi may be i-eadily distinguished from scudderi by its in- 
ferior size, the 9 of the former about equaling the ^ of the latter. 
In ocidatum, the head is less compressed, especially above; the 
eyes are much larger proportionally and ai-e more prominent (see 
fig.) ; and the antennae are longer in proportion. The facial costa 
is rather more sulcate, especially in $ . 
The PRONOTUM presents no distinctive characters though in 
oculatum it is rather less compressed and the posterior process 
r ither more acute than in scudderi. 
In oculatum the hind femora are less distinctly fasciate exter- 
nally, and internally show a decided diffei'ence : in oculatum the 
})roximal fuscous band is obsolete ventrally, and the proximal two 
are not connected ; while in scudderi the proximal fascia is com- 
plete and the proximal two are broadly connected in tibial groove 
and on inner side, giving the appearance from below of a single 
very broad fascia. In oculatam the hind tibiae seem to be more 
often annulate with pale basally, and are less vivid in color. 
