( ^04 ) 
VIII. On the Qeo\niii\'\(\ix(i of the Arncntine liepiihlic. By 
Louis B. Prout, F.E.S. 
[Road April 6tli, 1910.J 
Plate XLVIII. 
Although a good foundation has been laid by Bunneister 
and Berg for the study of certain Lepidopterous families 
in the Argentine Bepublic, the Geometridae have hitherto 
been greatly neglected. Burmeister’s work, “ Description 
physique de la Republicpie Argentine ” (Paris and Buenos 
Aires, 1876-80, 8vo), contained “ Lepidoptera, Part I,” 
but this did not reach to the Geometridae, although a few 
genera which were formerly classed as Lithosiid foimd 
their way into it. Almost all that is known of the 
Argentine representatives of the family in question is 
therefore to be sought in scattered articles in periodicals, 
such as those published in Buenos Aires, where Berg has 
described a very few species, Rothschild’s “ Novitates 
Zoologicae,” containing Warren’s descriptions of the new 
species in the Tring Museum, and the “ Annales de la 
Societe Entomologique de Belgique,” containing Dognin’s 
of those in his own collection. By gathering these to¬ 
gether, and at the same time making known the numerous 
new species which I have received through the generosity 
of j\Ir. A. F. Bayne, F.E.S., of Buenos Aires, his brother, 
Mr. W. M. Bayne, of Mendoza, and Dr. Eugenio Giacomelli, 
of La Rioja, I hope to bring our knowledge of the 
Geometi'idae of Argentina at least up to the level of that 
of some of the other, better-worked families. In order to 
make this memoir as complete as circumstances will allow, 
I am including in it a large number of faunistic records 
which have been courteously supplied to me by M. Paul 
Dognin, the well-known French student of South American 
Geometridae, to whom I am further indebted for his un¬ 
wearying kindness and co-operation in the quest of the 
solution of knotty points. Further records have been 
gathered from material kindly sent for my inspection by 
Dr. M. Bastelberger, of Wurzburg, as well as from that 
contained in the British IMuseum collection. It is much 
TRANS, ENT. SOC. LOND. 1010.— PART III. (NOV.) 
