452 Wisconsin Academy of Sciences, Arts and Letters. 
covering of white hairs. In the female the color is lighter, and 
there is a row of stiff black hairs along the side under the eyes. 
The abdomen, in both sexes, is silvery with three longitudinal 
red bands, the middle one narrower, and sometimes missing. 
In the 'male these bands are sometimes broken into spots. When 
the red scales are rubbed away the bands are black, as was the 
case with the female described by Mr. Banks as P. vittatus. The 
legs, and the palpus in the female, are reddish yellow, without 
bands or spots. The palpus in the male is dark colored with 
long white hairs on the tarsus. 
From Texas and Arizona. 
MJEVIA VITTATA H. 1845. 
Plate XLIX, figs. 7—7c. Plate LI, fig. 8. 
1845. Attus vittatus £ niger H., Jour. Bost. Soc. Nat. Hist. 
1846. Plexippus undatus <$, C. K., Arachn., XIII, p. 123. 
1848. Mjevia pencillata C. K., Arachn., XIY, p. 69. 
1875. Attus vittatus $, niger H., Occ. Pap. Bost. Soc. Nat. Hist, 
II, pp. 63, 64. 
1888. Astia vittata P., Wis. Acad. Sciences, Arts and Letters, VII, 
N. A. Att., p. 70. 
1891. ML^via vittata Em., Trans. Conn. Acad., VIII, p. 18. 
Length, 8 7 mm., 9 8 mm. Legs, 8 4132, 9 4312. Spines, 
8 tib. I, II 4-4 and anterior and posterior laterals, pat. I an¬ 
terior and posterior laterals, met. I, II 2-2 and anterior and 
posterior laterals; 9 tib. I, II only 1 anterior lateral, pat. I 
1 small anterior lateral, met. I, II without laterals, otherwise 
like 8 . Under tib. II the pairs are not equidistant from each 
other. 
The male has two distinct varieties. One of these, niger H., 
has the body black except for a pale spot divided by a longi¬ 
tudinal black line, on the thoracic region. On the front of the 
head are three long tufts of black hairs. The clypeus, falces, 
palpi, and under parts are dark, and the legs pale yellow. The 
second variety, which is more like the female, has the cephalo- 
thorax pale and translucent except for the blackish eye-region, 
