ON SOME RARE ARACHNIDS 423 



straight, the centrals are the least, and are separated by a 

 space equal to half their diameter. Each is more than one 

 diameter from its adjacent lateral. The trapezium formed by 

 the four central eyes is a good deal longer than broad, and 

 narrower in front than behind. 



Clypeus. — About equal to ocular area. 



Falces. — These are shaped as in the other Corniculariae. 

 They are strong and of a dark brown colour. 



Sternum, — Almost black, shining and bearing numerous 

 punctiform impressions. The apex is broad and truncated. 

 It is, however, much narrower than the fourth coxae which it 

 separates. 



Maxilla, labium, and spinners. — All these are of a paler 

 brown than the rest of the under surface. None of them 

 appear to present any abnormal features. 



Vulva. — This is very characteristic, and I give a figure 

 of it (see plate). It is built on the same lines as that of 

 C. unicomis (Camb.), but is quite different in details. It is 

 the palest part of the ventral surface. 



Legs. — These are all of a clear yellowish brown colour, and 

 are covered with numerous fine stiff hairs. Each patella bears 

 above a stiff bristle. True spines are present on all the ftbice. 

 Those of the first two pairs bear two spines above in each 

 case. In the two posterior pairs the second or apical spine is 

 wanting. Sensory (acoustic) setae are present on all the tibm 

 and metatarsi. The tarsal claws are three in number on each 

 limb. 



I have not described this spider in detail, as it closely 

 resembles the other members of the genus. Its vulva, however, 

 easily distinguishes it from these. In C. cuspidata (Bl.) and C. 

 unicornis (Camb.) the posterior eyes are equidistant. In the 

 present species, on the contrary, the centrals are nearer 

 together than each is to its adjacent lateral. This, however, 

 is a distinction which may not hold good in a long series. 

 The solitary example of C. valida as yet obtained is much 



