| OCR Text |
Show 436 REV. O. P. CAMBRIDGE ON N E W 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 tbe cephalothorax, 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 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 leys 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 |
