442 Wisconsin Academy of Sciences, Arts and Letters . 
1888. Menemerus P., Wis. Acad. Sciences, Arts and Letters, VII, N. A. 
Att., p. 84 (Paykullii). 
1901. Thotmes F. O. P. C., Biol. Cent. Am., Arachn., II, p. 240 (Paykul¬ 
lii). 
1903. Plexippus E. S., Hist. Nat. Araign., 2me Ed., II, p. 734. 
1905. Plexippus B., Am. Nat. XXXIX, p. 321. 
Cephalothorax long and rather high, slightly convex, a little 
dilated behind dorsal eyes, with sides nearly vertical and paral¬ 
lel in front, rounded behind; cephalic part inclined; thoracic 
falling gradually from a little way behind dorsal eyes to near 
the posterior border, then dropping abruptly. Eye-region occu¬ 
pying but little more than 1-3 of cephalothorax, 1-4 wider than 
long, a little wider in front than behind. Front eyes in a curved 
row, the middle less than twice as large as the lateral. Second 
row a little nearer the lateral than the dorsal. Third row slightly 
narrower than the cephalothorax. E alces with two teeth on the 
upper and one on the lower margin. Labium a little longer 
than wide. Coxae of first legs separated by less than the width 
of the labium. Sternum rather long, rounded behind, contracted 
in front, not truncated. 
PLEXIPPUS PAYKULLII AUD. 1825. 
1825. Attus paykullii Aud., Descr. Egypte, 2nd Ed., XXII, p. 172. 
1837. Attus paykullii walck., Hist. Nat. Ins. Apt., I, p. 426. 
1846. Plexippus ligo C. K., Die Arachn., XIII, p. 107. 
1876. Hasarius paykullii E. S., Ar. Fr., Ill, p. 81. 
1881. Menemerus paykullii Th., St. Rag. Mai. e Pap., Ill, p. 501. 
1881. Menemerus paykullii Keys., Ar. Austral., p. 1461. 
1888. Menemerus paykullii P., Wis. Acad. Sciences, Arts and Letters, 
VII, N. A. Att. p. 84. 
1901. Thotmes paykullii F. O. P. C., Biol. Cent. Am., Arachn., II, 
p. 240. 
1903. Plexippus paykullii E. S., Hist. Nat. Araign., 2me. Ed., II, p. 734. 
1904. Plexippus paykullii B., Proc. Acad. Nat. Sci. Phila., p. 138. 
Length, S 9-10 mm., 2 9-12 mm. Legs, $ 1432, long, 
first pair stoutest; $ 4312. Spines, $ $ , tibse I, II 3-3 and 2 
