OCR Text |
Show 694 MESSRS. G. W. AND E. G. PECKHAM ON [Nov. 21, in front. The maxillae are twice as long as the labium. The labium is as wide as long. The cephalothorax is dark rufous. In alcohol the abdomen is transversely banded with dark and pale rufous, with a wide dark band near the posterior end. W h e n dried the anterior half is rufous with two transverse curved bands of white hairs; behind the second of these is a wide blackish band and between this and the spinnerets the colour is rufous. The palpi are pale. The legs are light rufous, the first pair unmarked, the second, third, and fourth with a black line running along the anterior face. This spider is immature, but seems to belong to the genus Key-serlingella. DYNAMIUS METALLICUS, sp. nov. (Plate LXI. figs. 2-2 c.) 3. Length Q-8. Length of cephalothorax 3; width of cephalothorax 2-4. Legs 3,4, 2,1, nearly equal in length; the first three pairs stouter than the fourth. The cephalothorax is high and convex. The cephalic part is inclined forward and has the sides nearly vertical and parallel. The thoracic part has a nearly plane semicircular plate behind the dorsal eyes, from which it rounds downward on the sides and behind; it is very much narrower on the upper surface than below, the sides being concave. The quadrangle of the eyes is a little wider in front than behind, is one-fourth wider than long, and occupies not quite two-fifths of the cephalothorax. The eyes are all large. The first row is plainly curved with the eyes a little separated, the middle being less than twice as large as the lateral. The second row is halfway between the first and third rows. The dorsal eyes are a little smaller than the lateral and form a row which is not quite so wide as the cephalothorax, although it is as wide as the upper surface. The clypeus is two-thirds as high as the middle eyes of the first row. The falces are slightly retreating, short and not very stout. The sternum is wide and is truncated in front and behind. The maxillae are short and are widely separated. The labium is fully as wide as long. The whole appearance of this spider is big, black, and burly. The cephalothorax is ornamented with a pair of snow-white spots on the cephalic and another on the thoracic part, while the sides are encircled by a wide white band. On the black abdomen is a pattern in yellowish white with a tinge of red, consisting of an encircling band, a central, longitudinal, dorsal band, which in the posterior half is broken up into spots, and a curved transverse band on each side of the dorsum behind tue middle. The palpus has the femur and the proximal end of the patella covered with white hairs. The first two pairs of legs have the joints much enlarged and rounded ; in the third pair they are also enlarged but are lengthened out; the first, second, and third pairs have fringes of white hairs, and have all the joints, excepting the tarsi, iridescent, with brilliant violet reflections. Some of this iridescence is also seen on |