266 REV. O. P. CAMBRIDGE ON THE [Feb. 20, 



yellowish white. The labium is oblong, rounded at the apex, which 

 is of a whitish colour, the remainder being red-brown. The sternum 

 is heart-shaped and of a dark yellow-brown colour. 



The abdomen (of the female) is oval, of a dull black colour, and 

 very sparingly furnished with hairs ; on the upperside are three 

 pairs of yellowish-white, longish oval, oblique spots of different sizes 

 in a longitudinal series in the middle line, giving the appearance of 

 broken chevrons ; these are succeeded by a crescent-shaped trans- 

 verse patch of the same colour, and large and small somewhat 

 triangular patches and an oval one, all arranged longitudinally in 

 the centre line, the oval spot being immediately above the spinners ; 

 these are rather prominent and of a pale yellowish colour, those of 

 the inferior pair being much the longest. On the underside the 

 abdomen has a broadish broken bar of yellowish white on either side, 

 into the posterior part of each of which there joins in a short oblique 

 lateral stripe of the same colour ; and between these two bars is 

 a long central longitudinal line or narrower bar. The upperside of 

 the abdomen in the male (adult) appears to be covered with a trans- 

 parent, glossy, somewhat corneous integument of a shield-nature, 

 through which a pattern similar to that on the abdomen of the female 

 is rather indistinctly visible ; the spiracular plates are of a yellowish- 

 brown colour ; and the genital aperture is deep red-brown and of an 

 omega-form. With these differences, the two sexes are in other 

 respects similar. 



Adults of both sexes were found under stones, but very rarely, on 

 the plains of the Jordan near the ruins of ancient Jericho. 



It did not appear to be an active Spider ; and I could not detect 

 any web or snare belonging to it, though these would probably, 

 if they existed, have been destroved by the lifting up of the stones. 

 I have connected with this Spider the name of my kind friend Mr. 

 R. H. Meade of Bradford. 



Lachesis blackwai.li, sp. nov. (Plate XIII. fig. 5.) 



Male adult, length 7\ lines. 



Cephalothorax oval, compressed laterally at the caput ; it is mo- 

 derately convex above, and the profile of the caput and thorax run 

 evenly into one line ; the normal grooves and indentations are fairly 

 defined ; the caput is rounded and rather bluff in front, and slopes 

 in a somewhat circular form to the margin of the clypeus, which is 

 very slightly impressed and exceeds in height the length of thespace 

 occupied by the fore and hind central pairs of eyes ; the colour of 

 the cephalothorax is yellow, sl'ghtly tinged with orange-brown, and 

 thinly clothed with short fine pale hairs. 



The eyes are in two strongly curved transverse rows, and are placed 

 somewhat in front of the highest part of the caput ; the curves are 

 directed backwards ; and the hinder row is longer than the fore one ; 

 the eyes of the fore central pair are the largest of the eight. The 

 relative position of all the eyes is similar to that of L. meadii. 



The legs are long, strong, their relative length 4, 3, 1, 2, and of 

 a yellow colour, the tarsi and metatarsi being strongly suffused with 



