136 Psyche [Sept.-Dee. 
two being especially sensitive to the apical pull. M 2 when ovoid, 
tends to be slanted towards the stem of veins R 3 and R 4 just 
above the discoidal. M 3 when ovoid and tending towards a 
proximally pointed cordate shape has its axis directed anteriorly 
towards the discoidal and posteriorly tornad. The same is true 
of Cu 4 which is usually the largest in the series and is often 
very conspicuously elongated (in all these cases, of course, the 
actual extension and expansion is essentially in a distal direc- 
tion). Macules Cu 2 and 1A which are often well separate and 
smaller than R 4 (except when the latter is very much reduced) 
form together a colon , the axis of which is directed either to- 
wards the discoidal, and appears more or less in line with the 
latter’s axis, or towards the apex of interspace R 3 and then fol- 
lows its scale-line (which is most frequently the one traversing 
the point of forking of veins R 3 and R 4 ), as the discoidal does 
its own, in which case, since both lie on different sections of 
their respective scale-lines, discoidal and colon do not appear 
parallel to each other, the former slanting tornad and the colon 
remaining Straight,” i.e., at right angles to the dorsum. The 
rare R 2 is smaller than Cu 2 (or 1A) while the slightly more fre- 
quent R 3 is scarcely perceptible to the naked eye. In a general 
way and disregarding the difference in elongation, the dimen- 
sional sequence of macules runs as follows: R 3 , R 2 , A 4 , Cu 2 , R 4 , 
M 4 , M 2 , M 3 , Cu 4 , with the rheniform RM (R + M) slightly 
broader than colon (Cu 2 + 1A). 
In the hindwing the macules forming the circumcellular arc 
are generally subequal, with Cu 2 III and M 3 often tending to be 
smaller than the rest, while Rs tends to be slightly enlarged and 
Sell is still more so (sometimes vaguely suggesting a very an- 
cient fusion of two spots in adjacent interspaces where the par- 
tition has been lost). Thus there is a gradual reduction in size 
from Sell to M 3 with Cu 4 subequal to M 4 and M 2 . Cu 2 and 1A 
are the smallest in series II (and even slightly smaller than 
Cu 2 III) and are apt to be fused forming an hour glass-shaped 
or rheniform (distally convex) spot not unlike the discoidal 
(R + M) and of approximately the same size but having a 
different curvature of axis since they lie upon different sections 
of their respective scale-lines. The extension of 2A is almost 
that of M 2 but (transversally to the veins) it is longer and forms 
a roughly rheniform blotch suggesting a more complete fusion 
of adjacent macules in 2 A and 3 A (an extinct vein) than that 
