508 Wisconsin Academy of Sciences, Arts and Letters. 
Spines 3 9 , tib. I 3-3, those of 3 not in regular pairs; met. 
I 2-2. The female has also a patellarj spine. 
In both sexes the cephalothorax is reddish, covered with 
white hairs. Around the margin is a pure white band. The 
abdomen is white, the male with a pure white encircling band, 
and three short, transverse, dark bars on the dorsum, the female 
with three pairs of dark spots, more or less coalesced. Female 
specimens preserved in alcohol become more like palmarum, the 
marks growing indistinct. When wet, the marks on the male 
abdomen look like those of the female. 
We have this species from Wisconsin, Massachusetts, Con¬ 
necticut, Pennsylvania, North Carolina, Georgia, Florida and 
Alabama. Mr. Banks has found it in New York and northern 
Louisiana, and Mr. Emerton reports it from near Ottawa, 
Canada. 
We formerly thought that Msevia pallida might equal mitra- 
ta, but this now seems to us improbable. 
Mitrata matures, in Wisconsin, about May 25, the male sev¬ 
eral days before the female. There seem to be many more 
males than females. They disappear about June 20, and not 
one can be found in the same places that had so many a few 
days earlier. 
WALA PALMARUM H. 1832. 
Plate XLII, figs. 1—If. 
1832. E. palmarum H., Jour. Sci. and Arts, art. 21, p. 108. 
1845. E. palmarum H., Jour. Bost. Soc. Nat. Hist., Y. 
1875. E. palmarum H., Occ. Pap. Bost. Nat. Hist. II, p. 70. 
1883. E. palmarum P., New or little known Attidse, p. 28. 
1885. Icius vittatus K., Verh. zool-bot. Gesell., Wien, VI, p. 504. 
1885. Wala albovittatus K., ibid., p. 517. 
1888. Icius albovittatus P., Wis. Acad. Sci., Arts and Letters, VII, N. 
A. Att., p. 50. 
1888. Icius palmarum P., ibid., p. 46. 
1891. Icius palmarum Em., Trans. Conn. Acad., VIII, New England 
Attidse, p. 14. 
Length, 3 4-5.5 mm., 9' 5 mm. Legs, 3 1423, $ 1423, first 
pair, in the male, much the longest. Falces of male sometimes 
horizontal. Spines, 3 9 , tib. I 3-3, met. I 2-2. 
