(592 REV. O. P. CAMBRIDGE ON NEW [NOV. 18, 



The female differs from the male in having the black abdominal 

 bands broader and more distinctly marked, and the leaf-shaped reddish 

 marking, consequently, narrower and more distinct ; the black patch 

 at the occiput is also larger. 



Received from Mr. Atkinson, by whom they were kindly brought 

 to me, with other Spiders, from New Zealand. 



Phycosoma, gen. nov. 



Allied to Atkinsonia, but differs in the still shorter and almost 

 round cephalothorax, the much narrower and oviform sternum, the 

 longer legs (4, 1, 2, 3), and the form of the abdomen, which last pro 

 jects over the cephalothorax so as to conceal the greater portion of it. 

 The cuticle of the abdomen is not coriaceous, nor covered with pock- 

 marks. 



The eyes and ocular area are very nearly like those of Atkinsonia. 



The whole Spider bears considerable resemblance to the genus 

 Phycus, Cambr. 



Phycosoma oecobioides, sp. n. (Plate LI I. fig. 6.) 



Adult female, length -jL of an inch. 



The ocular area is large and prominent, with a strongly impressed 

 clypeus ; the fore side of the square formed by the four central eyes 

 is lono-er than the posterior side, and the interval between the hind- 

 central pair of eyes is slightly less than that between each and the 

 hind-lateral eye "next to it. The colour of the cephalothorax is dull 

 brownish yellow, with a distinct black marginal line ; the upper part 

 of the caput, excepting a patch surrounding the hind-central eyes, is 

 brown-black. 



The legs are of tolerable length, yellow-brown tinged with reddish, 

 and are furnished with hairs and slender bristles only. 



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



The maxilla and labium were almost concealed by the folding over 

 them of the anterior legs, which could not be removed without 

 serious damage to the specimen ; but they appeared to be very similar 

 in form and size to those of Atkinsonia nana. 



Falces very small, and similar in colour to the cephalothorax, 

 suffused with blackish at the extremities. 



Sternum dull brownish yellow, with a broadish dusky black margin. 



Abdomen large, oval, and greatly projecting over the cephalo- 

 thorax ; it is of a blackish-brown hue ; on the upperside is a large, 

 rather obscure, yellow-brown, tapering, somewhat dagger-shaped, 

 interrupted, longitudinal central marking, mostly covered with white 

 cretaceous spots and patches ; the sides also have each a longitudinal 

 yellow-brown marking, similarly covered with white. The central 

 marking on the upperside appears to consist of the ordinary angular 

 bars exaggerated, especially the anterior one, which is preceded by 

 two large, nearly parallel longitudinal patches of the same colour. 

 Spinners exceedingly short. 



This minute Spider, which has a great general resemblance to some 

 species of Qlcobius, was received from Mr. Atkinson, by whom it 

 was found in New Zealand. 



