162 AMERICAN SPIDERS AND THEIR SPINNINGWORK: 
No. 19. Epeira volucripes Krysrruine. Plate VI, 1, 2. 
1884. Epeira volucripes, Knyseruinc . . Verh. d. z. b. Ges. Wien., p. 528, pl. 18, Fig, 27. 
1892. peira volucripes, Keysuruina . . Spin. Amer. Epeir., p. 199, tab. ix., 147. 
Frmate: General colors dark yellow and brown for the fore part; on the abdomen 
yellow, with blackish to brown markings. ‘Total length (two specimens), 11 (9.5) mm.; 
cephalothorax, 4 (3.5) mm. long, 3.5 (3) mm. wide; head, 2 (1.3) mm. wide; abdomen, 
8 (6.5) mm. long, 7 (6.2) mm. wide. 
CrpHaLorHorax: Corselet a rounded oval; brown, with lighter tints on caput and 
summit of corselet; .well clothed with white hairs. Sternum cordate, as wide as long; 
color brownish yellow, with a bright yellow median band; lip and maxille brown, tipped 
with pale yellow. 
Eyres: Ocular quad on an eminence projecting forward; front as wide as long, and 
wider than rear; MF separated about 1.5 diameter; MR smaller than MF, and separated 
less than one diameter; SF from MF about 1.3 their alignment; side eyes on tubercles; SF 
larger than SR, the latter placed well to the sides, and marked with strong gray eyebrows; 
front row very little recurved, the longer rear row procuryed. Clypeus about two diameters 
MF high; grayish bristles on the margin. 
Lees: 1, 2, 4, 3; yellow, with brown apical and median annuli; thickly covered with 
gray bristles and hairs, interspersed with strong brown and yellow spines; palps colored 
and armed as the legs. Mandibles brown, conical, rounded at the base, divergent at tips. 
AppomEen: Subtriangular; widest at the base; somewhat arched to the distal spinnerets. 
The dorsal base overhangs the cephalothorax, is pale yellow, heavily clothed with gray 
hairs; the folium has a yellow median herring bone pattern, flanked by lunettes of black 
or blackish brown in two rows approximated towards the apex. The folium is not unlike 
that of E. arabesca in its general form. The dorsal color extends over the sides in irregular 
loops, margined by a scalloped black band that extends underneath. The yenter is a broad 
squarish band of yellowish brown, with two bright spots near the spinnerets and blackish 
color within. The epigynum is rather short for such a large species, subtriangular, wide at 
the base, spooned at the somewhat rounded top. (Plate VI., Figs. la, 1b.) 
Mate: Plate VI., Figs. 2, 2a. 7.5 mm. long; in general color and markings resembles 
the female. The abdomen is somewhat lighter in color; tibia—-II is not especially developed 
in size or in clasping armature, being simply marked by several long strong spines, one 
of which, on the inside, is longer and stronger than the others, and placed upon a slight 
process; the joint is also somewhat bent. 
DistrisuTion: Savannah, Ga. (Marx Collection.) Keyserling reports the species from 
New Hampshire and Tennessee; and from Haiti and Panama, Central America, This 
indicates an elastic temperament, at once adapted to the rigors of New England and the 
fervors of the tropics. I believe, however, that the species is not common. in northern 
latitudes, but belongs more especially to the southern fauna. 
No. 20. Epeira tranquilla, new species.' Plate VI, Figs. 3, 8a. 
Femate: Total length, 4 mm.; abdomen, 2.5 mm. long, 2.6 mm. wide; cephalothorax, 
2 mm. long, 1.5 mm. wide, and 1 mm. wide at the face. 
CrrHALoTHORAX: Cordate; corselet rounded at sides, high in the middle, shelving 
behind; head much depressed, sparingly clothed with gray pubescence; corselet grooves 
rather distinct; cephalic suture distinct; color yellow, with brownish flecks along the mar- 
gins and in the sutures; pubescence gray; the hairs thick on the caput, particularly at the 
sides, where they form strong gray eyebrows. Sternum shield shaped, wide at the base, 
where it is rather squarely truncate; obtusely triangular at the apex; color yellow, with 
darker marks on the margin and an interrupted median band of brownish yellow; labium 
1In his catalogue Dr. Marx refers to this spider as E. Heidmannii, in lilt.(page 544); and again as 
E. tranquilla Keyserling, in Jill. (page 548). I have hence adopted the name Tranquilla. 
