On new South-American Arctiade. 53 
stigma extremely small; marginal cell long and narrow, 
obtuse at end ; b. n. falling far short of t.-m. ; second s.m. very 
broad, receiving first r. n. slightly beyond middle ; third s.m. 
receiving second r, n. far from its end. Abdomen shining, 
finely punctured, with long hair which extends over the 
surface, but also forms rather distinct bands; apical plate 
very broad, truncate, with rounded corners. 
Hab. Hermannsburg, Centra! Australia (H. J. Hillier ; 
British Museum), 
In the colour of the antenne, &c., this is curiously 
parallel with P. fimbriatinus hillieri, Ckll., from the same 
locality. The species may be compared with P. fulvus, Sm., 
P. ruficornis, Sm., and P. waterhousei, Ckli., but is very 
distinct by the structure of the metathorax, &c. 
TV.—New South- American Arctiade. 
By J. J. Joicey, F.L.S., F.E.S., and G. Tausor, F.E.S. 
Tue types of the species herein described are all in the 
collection of Joicey. 
Our thanks are due to Sir G. F. Hampson for help in the 
determination of the species. 
Coloured figures of all these species will be published 
later. 
1. Thyrarctia semivitrea, sp. n. 
do. Head, thorax, legs, and abdomen as in cedo-nulli, 
Stoll., white spot on tegulz much smaller. 
Upperside-—Fore wing chocolate-brown. A _ triangular 
hyaline patch at apex as in the allied species. A broad 
hyaline band crosses the wing and extends costally from 
before the base of vein 7 to middle of cell opposite vein 3, 
and along outer margin from vein 5 to just below termina- 
tion of vein 2, This band is indented in cellules 5 and 6, 
and its proximal edge is straight. A thin waved dark 
brown submarginal line crosses the band, representing, as it 
were, the outer edge of a similar but much thicker line in 
the allied species. A pale irregular discocellular patch, the 
larger part of which lying outside the cell is bluish grey 
edged with yellowish, the part within the cell is mostly dark 
brown. The discocellulars are outlined with white, as is 
also the base of vein 5 within the discocellular patch. Costa 
cream-colour from apex to proximal border of hyaline band. 
