436 REV. O. 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. 



T\\&/alces 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 somewhat angularly 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 calamistra 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 5^ 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 Srd 

 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 und 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 



