SPIDEK OF THE GENUS LIPUISTIUS. 



773 



Abdomen. — Apparently oval in shape and about Ig times as 

 long as wide (the abdomen of the only available specimen is, 

 however, somewhat shrivelled, so that these proportions may not 

 bo accurate). It is furnished with 9 distinct dorsal terga, and 

 there is a rudimentary 10th one midway between the 9th and 

 the anal tubercle. The 4th tergum ia the largest and the 9th 

 the smallest. The sides and lower surface of the abdomen are 

 -wrinkled and thickly clad with bristly hairs ; there are ^signs also 

 of the terga having been armed with bristles along their posterior 

 margins. 



The spinnerets form a compact group about the ntjiddle of the 

 lower surface of the abdomen, the base of the anteriors being 

 almost exactly midway between the base of the abdomen and the 

 anal tubercle. They are typical in form with the basal segment 

 of the posterior laterals about half the djameter of that of the 

 anterior laterals, and the anterior medians a little larger than the 

 posterior medians. The apical segments of tbo laterals are 

 divided into about 12 false articulations. The anterior laterals 

 .are separated at the base by about hair their basal diameter ; and 

 their apices reach .a point halfway between the anterior margirji 

 of their base and the anal tubercle, The anterior medians are 

 close together and just in front of the anterior laterals, whilst 

 the posterior medians, also contiguous, are situated between the 

 two pairs of laterals. The bases of the posterior laterals are close 

 togetiier and their distal extr(jmities are curved inwards similarly 

 to those of the anterior laterals. The inner jnai"gin of the apical 

 segments of all the laterals is furnished w;th a fringe of coarse 

 brownish hair. 



The anal tubercle is conical, clothed with black bristles and 

 situated a little way ia front of the posteiior en(J of the 

 abdomen. 



Measurements (mm.). 



Length. Breadth. 



Oephalothorax 13-2 10-6 



Abdomen 13-2 (8-6}* 



Falx 5-5 



Lengths of 



Legs I 



II 



III 



IV 



Palpi 



Cosic. 

 6-0 

 5-7 

 6-0 

 6-4 

 4-5 



Tr. & fem. 



10-3 

 10-2 



11-6 



14-3 

 9-3 



Pat. & tib. Met. & tar. 



10-6 

 10-6 

 11-2 

 13-4 

 9-4 



8-2 



9-0 



IM 



17-5 



6-0 



* Approximate only, abdoincn somewhat shrivelled. 

 Pkoc. Zool. Soc— 1923, No. LI. 51 



Totals. 



35-] 

 35-5 

 39-9 

 51-6 

 29-2 



