698 REV. O. P. CAMBRIDGE ON NEW [Nov. 18, 



Received among other New-Zealand Spiders from Capt. F. W. 

 Hutton. 



? Genus Stegosoma, Cambr. 



?Stegosoma quadratum, sp. n. (Plate LIII. fig. 15.) 



Adult female, length slightly over 1 line. 



The cephalothorax is yellow-brown, darkest on the sides of the 

 thoracic portion, which is also depressed, while the caput is elevated 

 and its fore extremity produced and prominent ; its slope at the 

 occiput is abrupt and the clypeus is greatly impressed. The surface 

 has the appearance of being thickly covered with minute shallow, 

 but not very well-defined, pock-like marks, and the caput is clothed 

 with coarse hairs. 



The eyes occupy the whole of the fore part of the prominence of 

 the caput ; they are rather unequal in size ; the four centrals form a 

 largish square figure, the anterior (or fore-central) pair being much 

 the largest ; those of each lateral pair are contiguous to each other, 

 and placed on the side of the prominence and rather far back, so 

 that the hind-laterals come in a straight line with the hind-centrals, 

 even if not a little further back still, and the intervals between those 

 of the posterior row are nearly about equal. 



The legs are short, rather strong, 4, 1, 2, 3. They are of a 

 brownish-yellow colour, broadly, but not very distinctly annulated 

 with deep brown, and are clothed with coarse hairs and slender 

 bristles only. 



The palpi are short and similar in colour and armature to the legs. 



The falces are small, straight, parallel, and of a dull yellowish- 

 brown hue. 



The maxilla are small and greatly inclined over the labium, which 

 is of an oval form, somewhat blunt-pointed at the apex ; these parts 

 are of a paler hue than the falces. 



The sternum is of a subtriangular heart-shape, dark brown, thickly 

 covered with shallow pock-marks and clothed with coarse hairs. 



The abdomen is very large, of a somew r hat quadrate form, flattish 

 on the upperside and with a steep hinder slope : the latter marked 

 with several distinct transverse folds in the cuticle towards the 

 spinners. On each side of the hinder extremity above is a large 

 blunt-pointed subcorneal prominence, directed outwards and back- 

 wards. At each corner of the fore extremity is a very much smaller 

 somewhat angular prominence, and about halfway between each of 

 these and the large posterior one is another of the same size. The 

 whole of the surface of the abdomen is thickly covered with minute 

 circular, somewhat shining pock-like marks ; but in the absence 

 of a high magnifying-power I could not satisfactorily determine 

 whether they are actually depressed or not ; the abdominal surface 

 is also clothed with very short hairs. 



The colours and markings of the abdomen appear to vary con- 

 siderably in different examples. In the one figured the whole of the 

 underside and the greater part (forwards) of the upperside is of a 

 deep brownish-black hue, marked with three spots, in the form of a 



