436 REV. 0. P. CAMBRIDGE ON NEW ARANEIDEA. [May 16, 
The colour of the cephalothorax is a dull pale yellowish brown, 
distinctly darkest on the sides—the legs, palpi, and falces being also 
of a similar hue. 
The falces are small and prominent. 
The palpi also are small and short. 
The under surface of the cephalothorax has much more the 
normal appearance of a sternum than in the typical species, and is 
suffused with brown. 
The abdomen is about twice and a half the length of the cephalo- 
thorax, and of an elongated oval form, broadest towards the 
spinners. It is of a pale dull yellowish-brown colour, with a still 
paler elongate marking along the middle of the upperside of the 
fore part, edged somewhatangularly with a not very distinct dark line. 
On the sides of and behind this marking are traces of some white 
markings ; but the abdomen was not in sufficiently good condition to 
enable its colours and markings (probably in no case very strong or 
definite) to be satisfactorily seen. 
The spinners are just beneath the posterior end of the abdomen; 
the ordinary ones are of moderate length, those of the inferior pair 
being the strongest. There is also the supernumerary spinning- 
organ which is always found where caljamistra exist on the fourth 
pair of legs. 
Two more or less damaged examples were received in Mr. Traill’s 
Amazon collection. 
MiaGRAMMOPES LONGICAUDA, sp. n. (Plate XXXI. fig. 12.) 
Adult female, length 53 lines. 
In striking contrast to the species just described, this one has the 
cephalothorax of an oblong form rounded before, and with the sides 
very nearly parallel, its length being nearly double its breadth ; 
its colour is dark but dull yellowish brown, on the sides with a 
rather broad longitudinal central paler band, clothed with short grey 
hairs. 
The eyes (four in number) are small, and form a slightly curved 
transverse row over the caput ; the interval between the two centrals 
is distinctly greater than that between each and the lateral eye on 
its side, being equal to the breadth of the two falces. 
The legs are similar in colour to the cephalothorax, and of 
moderate length and strength, 1, 4, 2, 3, those of the 2nd and 3rd 
pairs being much the shortest. They are furnished with short 
grey and other hairs only (these being densest on the metatarsi of 
the first pair); and there are the usual calamistra on the metatarsi 
of those of the fourth pair. 
The palpi and falces are of a pale yellowish hue. 
The sternal surface is deep brown; its anterior portion is of a 
diamond shape, and its posterior of a triangular form, the apex of 
the triangle fusing in the hinder part of the anterior portion. 
The abdomen is of a cylindrical form, with its posterior extremity 
drawn out into a pointed tail-like prolongation, two thirds or more 
of the length (to the spinners) of the rest of the abdomen. Its 
