Rey. O. P. Cambridge on British Spiders. 119 
Fam. Epeirides. 
Genus ZILLA, Koch. 
Zilla acalypha, var. (Pl. XI. fig. 4.) 
aa ian Walck. Ins. Apt. ii. p. 50; Thorell, Syn. Eur. Spid. 
Pp. . 
Female adult, length 2 lines. 
The cephalothorax is rather strongly constricted on the 
lateral margins at the junction of the thorax and caput; this 
latter is rather produced, and the thoracic portion rounded, 
with the normal grooves and indentations well-marked ; the 
highest point of the thorax is (when looked at in profile) 
rather higher than the upper part of the caput, the interval 
being depressed. The height of the clypeus is about equal to 
half that of the facial space. The colour of the cephalothorax 
is yellow. The margins, as well as a strong central longitu- 
dinal tapering bar reaching from just behind the eyes to the 
thoracic junction, black. 
The eyes are in four pairs, seated on black tubercles: those 
of the two central pairs form a rectangle whose length is 
greater than its width, the hind centrals being larger than the 
fore centrals; those of each lateral pair are rather further from 
the hind laterals than these are from each other; when looked 
at sideways the lateral pairs range more nearly in a straight 
line with the hind than with the fore centrals, these latter 
being placed on a rather strong prominence. 
The legs are moderate in length and strength ; their relative 
length (as well as strength) is 1, 2,4, 3; they are similar in 
colour to the cephalothorax, and are armed with not very 
strong spines; the femora are longitudinally but obscurely 
marked on the outer side with two almost confluent or diffused 
sooty lines ; and the rest of the joints, particularly the tibie, are 
spotted and blotched with black. 
The palp? are rather slender, moderate in length, and similar 
in colour and markings to the legs. 
The falces are short and moderately strong, conical, directed 
backwards, and strongly suffused with brown. 
The maxille and labium are of normal form, of a dark 
black-brown colour, tipped with yellowish. 
The sternum is also of a similar colour. 
The abdomen is large, of an oval form, rather pointed in 
front, where it projects greatly over the base of the cephalo- 
thorax ; the upperside is of a yellowish-white or cream-colour, 
marked with a very distinctly defined, black marking, oblong 
behind, and continued almost to the fore extremity in the form 
