255 
Geometridae of the Argentine Republic. 
with costa long, apex pronounced ; cell nearly one-half, DC“ very 
oblique ; C anastomosing with SC to near end of cell ; stalked 
with ; R2 central ; M* well separate from R^. 
Type of the genus : Hoplolygris cicatriculata (Berg) = 
Lygris cicatriculata, Berg. 
A somewhat isolated genus. I have not chosen its 
name to indicate any close relationship to Lygris, but to 
maintain some nomenclatural association with the original 
publication of its sole known species by Berg. I suppose 
he referred it to Lygris on account of its type of coloration 
and markings, and having thus referred it, deceived 
himself into seeing, or imagining “ the wings of the ^ 
beneath with a tuft of hair at the base ”; if a tuft exists, 
even in the very freshest specimens, it must be so slight 
as to be practicably negligible, for a most careful in¬ 
vestigation has failed to discover it, and Warren (Nov. 
Zool., viii, 467) passes the same criticism. Warren (Nov. 
ZooL, iv, 454), places the species in Pelurga, Hiib., and 
describes its frontal armature, without mentioning how 
radically this differs from the simple horny protuberance 
of P. comitata, Hiib. He ^overlooks the other differences 
(except the wing-outline), namely the apical claw of the 
foretibia, the non-biangulate discocellulars of hind wing and 
some points of detail in the forewing venation. 
The presence of the sharp frontal plates is rare in the 
Geometridae, though occurring in a few Australian genera, 
such as Giampa, Walk. Its general association with sandy 
desert country suggests that perhaps the genus Hoplolygris 
will be found to inhabit the pampas, and may have had 
its origin there. 
90. Hoplolygris cicatriculata (Berg). 
Ijygris cicatriculata, Berg, Act. Acad. Cienc. Cordoba, i, 85 
(1875); Bull. Mosc., xlix (2), 223 (1876).^ 
Pelurga straminea, Warren, Nov. Zool., iv, 454 (1897).^ 
Pelurga cicatriculata, Warren, Nov. Zool., viii, 467 (1901). 
(^) Rio Negro, in damp places, November 1874, rather 
common, also at Buenos Aires and Cordova ; (f) La Gama, 
one November 1893 (Warren’s type), in coll. Roths¬ 
child; Buenos Aires, a good number (A. F. Bayne and 
P. Richards) in coll. L. B. Prout, mostly November, one 
each in January and March, also from Berg, etc., in coll. 
