KAIRA.—EDRICUS. 57 
It is of a dull whitish-yellow, tinged with yellow-brown and marked in front and on the sides with some 
irregular rather darker lines, The spinners are short and compact. The genital process is very small 
and has a minute sharp recurved point. 
Hab. Panama, Veragua (Boucard). 
A single example. 
Kaira gibberosa, sp. n. 
Adult female, length 23 lines, height of abdomen 33 lines. 
Cephalothorax of a whitish colour, irregularly streaked with dull brownish-yellow. Height of clypeus distinctly 
less than half that of the facial space. 
Eyes of central group forming very nearly a square, whose anterior side is very slightly longer than the poste- 
rior side; the hinder eyes of this group are slightly larger than the fore ones. 
Legs short, 1, 2, 4, 3, and armed as in K. altiventer. They are yellow, marked in parts with whitish ; the fore 
extremities of the femora are deep brown, and the tibie, tarsi, and metatarsi are faintly annulated with 
yellow-brown. The femora also of the first pair are armed with some spines, of which, however, the bases 
only remained in the specimen examined. 
The falces are short, moderately strong, and similar to the cephalothorax in colour. 
Mawille and labium brown, tipped with a pale hue. 
Sternum of a still darker brown. 
Abdomen continuously elevated on the upperside in a subconical form, ending in a large, somewhat wrinkled, 
subcylindrical eminence, the extremity of which is bifid or has a subconical prominence on each side ; on the 
fore part of this eminence, as well as on the sides and lower hinder part of the abdomen, are some small 
subconical tubercles or prominences—two of these, one on each side of the median line, a little way 
above the spinners, are larger and more conspicuous than the rest. The colour of the abdomen is yellowish- 
white mixed with yellow-brown, and obscurely marked in parts with blackish; on only one part is any 
pattern visible, and that is on the hinder portion, where a large triangle is delineated by black lines just 
above the two tubercular prominences above mentioned. The spinners are very short, compact, and of a 
deep brown colour. The genital process is exceedingly small and inconspicuous but characteristic. 
Hab. Panama, Veragua (Boucard). 
A single example. 
EDRICUS, gen. nov. 
Cephalothorax longer than broad, narrow behind, gradually widening to the caput, and narrowing again 
forwards; caput produced forwards. 
Eyes unequal in size, on strong tubercular prominences. The four centrals are seated on a very large pro- 
minence, the posterior ones the largest ; those of each lateral pair are contiguous to each other, on a strong 
projecting tubercle on the sides of the caput, and removed backwards beyond the straight line of the hind 
central eyes. 
Legs long and slender, 1, 4, 2, 3, or 4, 1, 2, 3, devoid of spines, excepting in the male, in which the tibie of 
the second pair are short, enlarged, and have a strong sharp spine at the fore extremity on the inner side. 
Falces rather long, not very strong, and inclined backwards toward the sternum. 
Mazille short, bent towards the labium, which is also short, and rounded at its apex. 
Sternum deeply indented on the lateral margins to receive the legs, which have the appearance of being 
inserted into its surface, especially those of the third pair, the basal joints of the fourth pair being 
contiguous. . 
Abdomen long, cylindrical, produced over the spinners and armed with spines. This genus shows some 
affinity with Acrosoma. 
BIOL. CENTR.-AMER., Arachn. Aran., Mebruary 1890. If 
