130 ARANEIDEA. 
and legs are of a greenish colour and the abdomen greenish yellow-brown. The height of the clypeus is 
less than half that of the facial space. 
Eyes in the normal position. The four centrals are much the largest and form a trapezoid or square, whose 
anterior side is rather longer than the rest. Those of each lateral pair are very minute, contiguous to 
each other, and placed nearly vertically, the upper eye being almost or quite contiguous to the hind- 
central on its side. 
Legs very long, 1, 4, 2, 3, slender, furnished with fine hairs only; in Mr. Champion’s sketch the fore ex- 
tremity of the tibie of the first pair is suffused with brown, the rest being pale greenish yellow. The 
length of the first pair exceeds that of the spider itself. 
The palpi are short, slender, and similar to the legs in colour and armature. 
Maxille, labium, and sternum of normal form, and similar in colour to the legs. 
Abdomen excessively prolonged into a slender, tapering, cylindrical, sharp-pointed tail, eight or nine times the 
length of the cephalothorax ; its colour, in life, is pale greenish yellow-brown, thickly covered with 
minute yellowish-silvery spots, and clothed with tine hairs, which are stronger and denser towards the 
posterior extremity. The genital aperture is of characteristic form. 
Hab. Panama, Los Remedios in Chiriqui (Champion). 
Ariamnes approximata, sp. n. 
Adult female, length rather over 11 lines; length of cephalothorax and abdomen to spinners 2 lines; length 
from spinners to hinder extremity of abdomen rather over 9 lines. ‘ 
Hab. Panama, Bugaba in Chiriqui (Champion). 
This species is very nearly allied to A. gracillima, and resembles it closely in general 
appearance and colours, but differs in having the abdomen to the spinners longer in 
proportion to the length of the cephalothorax. ‘The legs are much shorter, the longest 
not reaching nearly to the end of the abdomen, and they are of a yellow-brown colour 
(in the preserved specimen); the metatarsi of the first and fourth pairs are no more than 
three times the length of the tarsi, while in A. gracillima they are nearly, if not quite, 
four times the length of the tarsi. The abdomen is also less clothed with hairs (though 
this may be owing to the hairs having been rubbed off), and its hinder extremity is 
shorter-pointed. ‘There isalso some little difference in the form of the genital aperture. 
ACHAA, Cambridge. 
Achea vittata, sp. n. 
Adult female, length 3 lines. 
This spider is of normal form and general structure. 
The cephalothorax is pale yellow, slightly clouded with dusky on the sides, and with an oblique dusky brownish 
line on each side running from the lateral pairs of eyes backwards obliquely to a darker marking at the 
thoracic indentation. 
The eyes are normal; four form a central square, and on each side is a lateral pair placed slightly obliquely ; 
the interval between each of the fore-central pair and the fore-lateral eye next to it is only half that 
between the fore-centrals; the interval between the hind-centrals is rather less than a diameter, and is 
also less than that between each and the hind-lateral eye next to it. The height of the clypeus exceeds 
half that of the facial space. 
The legs are long, 1, 4, 2, 3, rather slender, pale yellow, the fore extremities of all the tibie and metatarsi, 
and of the tarsi of the first pair, more or less strongly tinged with yellowish brown. They are furnished 
with coarse hairs, rather more densely on the brown extremities of the tibie. 
