Mr. J. R. Malloch on Fzotic Muscaride. 279 
processes stout ; some strong but short bristles on dorsum 
besides the erect stiff hairs. 
Length 7-5-8 mm. 
Type, male, Valle del Lago Blanco, Chubut, Patagonia 
(J. Koslowsky). Allotype, Port Famine, Tierra del Fuego 
(Charles Darwin). One female paratype, Valparaiso, Chile 
(Charles Darwin). 
This species is a very striking one, both as to colour and 
structure. It would undoubtedly be placed in Lasiops or 
Phaonia by other authors, but my recent diagnostic work on 
this family has convinced me that such a course is not per- 
missible, and I therefore erect for its reception a new genus 
which I have dedicated to the honour of the collector of the 
females above listed. 
The genus Phaonia finds its greatest development in the 
northern half of both hemispheres, there being comparatively 
few species even doubtfully referable here in the southern 
half of either, and Lasiops is entirely northern so far as I 
know now. 
Subfamily Lrsprvz. 
This subfamily, which is distinguished from its allies by 
having the palpi flattened and dilated at apex and the 
pteropleura with some erect hairs in centre, as well as the 
eyes widely separated in both sexes, is widely distributed, 
occurring in every faunal region in the world. . There are 
about 150 species described, the greater number occurring in 
the Palearctic region and in Africa, while there are but four 
described from South America. Only one genus is repre- 
sented, but there are some very aberrant forms, if we accept 
the genotype as the criterion of the genus. One of the most 
aberrant species known to me [I have in this paper used as 
type of a new subgenus. 
Subgenus XENOLISPA, nov. 
Subgeneric characters.—This subgenus differs from Lispa 
(sens. str.) in having the sterno-pleura with but one bristle, 
on the upper posterior angle. ‘The presence of but one pair 
of postsutural dorso-central bristles and the absence of long 
bristles on the postero-ventral surface of the fore femur, as 
well as the distinct narrowing of the first posterior cell of 
the wing, serve to distinguish the subgenus from most of the 
species of Lispa. 
Genotype, the following species. 
