Geometridae of the Argentine Meggnblic. 297 
postmedian may be almost continuous, or broken up into 
spots, both lines vary much in the acuteness of their angu¬ 
lation, some specimens are more clouded or banded than 
others distally to the postmedian, while the degree of 
dark dusting varies just as materially as above. Finally, 
the form from Salta, as I learn from an example kindly 
sent for my inspection by M. Dognin, is decidedly larger 
than the typical forms, being in this respect intermediate 
between the present species and the following, though 
clearly referable to the present one. 
This species, with that about to be described, and the 
Chilian insect mentioned above, will form a very compact 
group, quite distinct in aspect from normal Teplirinopsis, 
and which will possibly in time be found susceptible of 
generic separation; but at the moment I can point to 
nothing more tangible than their quite different, more 
glossy scaling and their different scheme of markings. 
The forewing venation has been examined in most of 
them, and yields nothing abnormal; SC^ is absent, SC^ 
usually free from (though close to) C, anastomosing at a 
point or connected with SC^h Even the $ antennal 
structure is much like that of the generic type, T. paral- 
lelaria (Walk.), being subdentate, the moderate or longish 
cilia being arranged in anterior and posterior pairs of 
small compact fascicles on each segment. 
167. Tephrinopsis sijbscripta (Prout), nov. sp. 
(Plate XLVIII, fig. 2.) 
. 33-34 mm. Extremely close to T. suhmnbrata, Dogn., dis¬ 
tinguished by its considerably larger size, longer antennal cilia (in 
subumbrata scarcely longer than diameter of shaft, in subscripta 
about twice as long), slightly narrower and more extremely glossy 
wings, usually shorter cell of the hindwing, with consequent longer 
stalking of SC^ with Rh* and by the position and course of the lines 
on the underside of the hindwing. These seem to be always strongly 
expressed, whereas in sKbimibrata they are oftenest comparatively 
weak and interrupted. Antemedian line from costa at about 6 mm. 
to inner margin at about 5 mm. (in the type specimen obsolescent at 
its extremities), oblique outwards from C to bifurcation of SC^-R^ 
thence diffuse, running nearly straight to inner margin, or slightly 
* Both species, however, are slightly variable in venation ; in 
subtimbrata SC^ and Ri may be either virtually connate or quite 
appreciably stalked. 
