370 Wisconsin Academy of Sciences , Arts and Letters. 
black line as in the second. Fourth pair brown, occasionally the 
proximal end of patella is light and also last two joints. Legs, 
2, first pair, brown except last two joints, which are yellow; 
second pair, femur patella and tibia, light, with the black line, 
metatarsus and tarsus, dark; third pair, femur brown, patella 
and tibia as in second, other joints light; fourth pair, brown 
except patella and tarsus, which are more or less yellow. In 
alcohol all parts tend to become brown. 
The species is one of ou* best ant mimics, both in form and 
movements. The females make three cocoons, each containing 
from three to four eggs. We have described in detail its mat¬ 
ing and general habits, in Vol. II, pt. 1 of the Occ. Pap. Nat. 
Hist. Soc. Wis., pp. 4-7. 
Picata matures, in Wisconsin, about the first of July. The 
females are more common than the males. 
PECKHAMIA SCORPIONA H. 1845. 
Plate L, figure 3. Plate LI, figure 3. 
1845. Synemosyna scorpiona H., Jour. Bost. Soc. Nat. Hist., V. 
1850. Synemosyna noxiosa H., Jour. Bost. Soc. Nat. Hist., VI. 
1875. Synemosyna scorpiona H., Occ. Pap. Bost. Soc. Nat. Hist., II, 
p. 74. 
1875. Synemosyna noxiosa H., Occ. Pap. Bost. Soc. Nat. Hist., II, 
p. 161. 
1888. Synageles scorpiona P., Wis. Acad. Sciences, Arts and Letters 
VII, N. A. Att., p. 95. 
1892. Synageles scorpiona P., Occ. Pap. Nat. Hist. Soc. Wis., II, 1, 
p. 63. 
Mr. Banks thinks that Salticus fuligineus, Blk. 1846, is a 
synonym. 
Length, 8 2.4 mm., 2 3.5 mm. Legs, 4123, first pair short¬ 
est, especially in the male. Spines, 8 and 2 , tib. I 1-1, 1 
single spine; met. I 2-2; tib. II 1 single spine; met. II 2-2. 
The cephalothorax is flat and low, the thoracic part falling 
gradually from the dorsal eyes, prolonged below to meet the ped¬ 
icle. 
