436 ME. H. E. HOGG- ON SPIDERS 



The sternum is broad shield-shape, slightly convex, straight in front, hollowed 

 opposite the insertion of each coxa and ending in a point between the rear coxae. It 

 is thickly covered with short stiff hair. 



The abdomen is ovate, straight in front, twice and a half as long as it is broad 

 in the middle. 



The cribellum in both cases consists of two separate oval plates mounted on a broad, 

 oval, chitinous plate. 



The inferior spinnerets are conical, separated by half their diameter, with short 

 hemispherical second joints. The superior pair is similar, but only half as long or 

 broad, the median cylindrical, quite short, and close together. They all project beyond 

 the end of the abdomen. 



The epigyne consists of two oval spirally marked prominences, one on each side of 

 a median ridge that widens out into a straight basal line. Both below this and some 

 little way above is a sudden deep transverse depression. 



The legs are long, cylindrical, and fine, the first pair being ten and a half times 

 the length of the cephalothorax. The tarsi are nearly half the length of the meta- 

 tarsus, very fine, and sinuous. There is only one weak spine above on metatarsus i., none 

 above on the tibia, but several long ones on the sides and underneath. There are claw- 

 tufts on the end of the tarsi. The femoral joint of the female palp is incurved and 

 broadened anteriorly, the tibial twice as long as the patellar, the tarsal is furnished 

 with a thick bunch of bristles and sundry spines. The claw has about ten pectinations. 



The measurements (in millimetres) are as iollows : — 



Long. Broad. 



f2-h ill front, 

 (.ephalothorax 5 



Legs. 



Coxa. 



2. 2 



3. 2 



4. 2 



Palpi 



In coloration this species is very similar to P. argentatus Thor., P. Ubeltii, and 

 P. annulatus Kulc, but in these species the front median eyes are smaller than (instead 

 of equal to) the side eyes and the rear median less (instead of more) than their diameter 

 apart. The legs are longer compared with the cephalothorax than in any of the 

 recorded species. The epigyne is only roughly the same type, and they diff'er in size. 

 From the Indian species the difierences are still more marked, and I have no 

 hesitation, therefore, in describing P. castancus as new. 



