296 
JMi^Louis B. Prout on the 
less clearly marked, etc.; they are also a little larger 
{rectilineata ; 20-22 mm.; fragilis 24-25 mm.), but as the 
typical fragilis from Peru measure only 20-22 mm., I do 
not overpress this. If the two are geographical races of 
one species, their range is a little curious; for although 
rectilineata can roughly be regarded as eastern and fragilis 
as western, I have recorded a specimen of the former from 
San Juan, 68° 57' W. long., and one of the latter from 
Villa Mercedes, 55° 20' W. long. 
The example from Villa Mercedes is the most interest¬ 
ing aberration; it is rather large and very well marked, 
the postmedian line replaced by the row of dark vein- 
dashes, which are very strong, and the shade distally to 
postmedian also rather conspicuous. Perhaps, taken in 
conjuction with the date (April 15), this indicates a more 
sharply-marked second brood, as I have suggested regard¬ 
ing the previous species. 
166. Tephrinopsis subumbrata (Dognin). 
Tephrinopsis siihumlrata, Dognin, Ann. Soc. Ent. Belg., 
1, 119 (1906). 
Buenos Aires, one Tucuman, a pair (the three speci¬ 
mens from which the original description was made), in 
coll. Dognin ; also others from Tucuman, in coll. Dognin et 
coll. Bastelberger; Salta, in coll. Dognin; La Rioja (Dr. 
E. Giacomelli), in coll. L. B. Prout; La Paz, Mendoza, ^ 
at light, November 22, 1903 (W. M. Bayne), in coll. L. B. 
Prout; Mendoza City, February 2, 1905 (W. M. Bayne), 
in coll. L. B. Prout; Palmira (W. M. Bayne), in coll. A. F. 
Bayne et coll. L. B. Prout (one or two bred ex ovo, W. M. 
Bayne). Mr. A. F. Bayne has also two or three undated 
specimens from La Paz, etc. 
Not yet known outside the Argentine Republic. A 
single example of an undescribed species from Araucania, 
Chili, closely related to this, stands in the British Museum 
collection. 
Another very variable species. The upper surface is 
generally quite weakly marked, and comparatively uni- 
colorous, though much darker in some examples than in 
others; but one interesting aberration, from Mendoza, has 
both wings quite pale proximally to the postmedian line, 
and strongly dark-shaded distally thereto. On the under¬ 
side of the hindwing there is still greater variation; the 
