Geomctridac of the Argentine Bepuhlie. 267 
ehillanensis, Butl., Tr. Eiit. Soc. Lond., 1882, 395, is another 
rather near relative, but it is certainly not conspecific. 
107. Triphosa cauquenensis (Butler). 
Scotosia eauquenensis, Butler, Tr. Ent. Soc. Bond., 1882, 
415. 
Puente del Inca, a fine series bred from pupae collected 
under stones during the construction of the railway (W. M. 
Bayne); also from Las Cuevas (W. M. Bayne). The first 
batch of moths was bred in November 1903, others in 
September and October 1905, and probably there are also 
other dates which I have not expressly noted. 
Hitherto only recorded from the mountains of 
Cauquenes, Chili (Butler’s types). 
The variation of the Puente del Inca and Las Cuevas 
race can har dly be described as extreme, yet some examples 
are of a somewhat warmer, browner tone than the others, 
some have the transverse lines more strongly, others more 
weakly expressed, while the breadth of the median area is 
also liable to some variation. There are distinct indica¬ 
tions of a local race, differing from the Cauquenes types in 
somewhat smaller size, warmer tone of colouring, and more 
uniform markings—weaker differentiation of the median 
band. In the whole of the long series which I have 
examined, there is only one which I can call even nearly 
typical. I therefore feel justified in describing the 
Argentine form as Triphosa cauquenensis inca, Prout, 
nov. var. (subsp. ?). 
Mr. A. F. Bayne, who bred a large number from his 
brother’s pupae, has kindly supplied me with a nice series, 
besides presenting examples to the British Museum. He 
further sent me some empty pupa-cases. In shape and 
colour they greatly resemble that of T. dubitata, Linn. 
The cremaster, however, shows distinct differences; in 
dubitata this is more elongate, and the pair of spines are 
fused for a considerable distance before diverging, i. e. may 
be roughly compared to a letter Y with short arms; in 
cauquenensis they are divergent from their base, as in the 
letter V. 
108. Perizoma impromissata (Walker). 
Yqysipetes imptromissata, Walker, List Lep. Ins., xxiv, 1268 
(1862).! 
