1873.] GENERA AND SPECIES OF ARANEIDEA. 125 



these are seven in number, three on either side of the upper part of 

 the abdomen, and one pointing backwards at its hinder extremity or 

 summit ; all of them are very short, in fact quite rudimentary, but 

 each issuing from the summit of a somewhat coniform protuberance 

 of the abdomen. When looked at in profile, the abdomen is of a 

 somewhat subtriangular form, rather humped a little below the 

 middle on its fore side. 



The cephalothorax is of a dark blackish yellow-brown colour, the 

 ocular portion strongly prominent, and its extreme point somewhat 

 bent downwards ; there is a greater inequality in the size of the eyes 

 than in P. brevispinosa, those of the fore central pair being con- 

 siderably the largest ; but their general position is the same. 



The legs are rather short, their relative length 4, 1,2, 3 ; they are 

 of a dull yellow colour and furnished with hairs and slender spine- 

 like bristles. The palpi are very short, slender, and similar in colour 

 to the legs. 



The falces, maxilla, and labium are paler in colour than the 

 cephalothorax ; the sternum is of a dull yellow tinged with orange, 

 and its surface is covered with impressed dots or punctures. 



The abdomen projects greatly over the base of the cephalothorax, 

 and is of a straw-yellow colour ; its surface is thickly covered with 

 round impressed dots ; and there are a few irregular patches of dark 

 brown, mostly on the lower part of the sides ; besides these there are 

 seven somewhat round brownish-yeliow ones on the fore (or upper) 

 part, and also seven on the hinder side, all symmetrically arranged. 



The adult male is much smaller than the female ; its caput is more 

 produced and prominent in the ocular portion ; and there are a few 

 conspicuous prominent spines on the upperside of the tibiae of the 

 first pair of legs ; the spines on the abdomen are also of a rather 

 more marked character, the protuberances of the abdomen from 

 which they spring appearing to form part of the spine, more so at 

 least than in the female. The palpi of the male are short ; the radial 

 joint is longer and stronger than the cubital, and of a somewhat sub- 

 conical form, with a single row of bristles round the margin of its fore 

 extremity, which is the broadest part of the joint ; the digital joint is 

 of moderate size, equalling in length both the radial and cubital joints 

 together ; the palpal organs are well developed, moderately complex, 

 and are margined with a slender black filiform spine. The colours and 

 markings of both sexes are very nearly similar, the male having some 

 blackish yellow-brown markings (not observed in the female) near 

 the lateral edges of the hinder part of the upperside. 



The falces (in both male and female) have two sharp teeth contigu- 

 ous to each other near their extremities on the inner side. 



An adult male and an adult and immature female were received 

 from Mr. Thwaites, from Ceylon, in 1871. 



Phoroncidia trispinosa, sp. n. (Plate XIV. fig. 9.) 



Female adult, length 1| line. 



This Spider may easily be distinguished from either of the foregoing 

 by the number of the spines ; the ocular portion of the caput is also 



