133 



The male's palpi in E. rufa are very characteristic. The patel- 

 lar and tibial joints together are longer than the patella of the l:st 

 pair: the patellar joint is a little thicker towards the extremity, and 

 somewhat longer than it is broad at the apex; the tibial joint is of 

 the same length as the patellar, slightly thicker in the middle, 

 where its outer side forms a protuberance bearing some long, straight 

 hairs. The clava is rather thicker than the thigh, and displays at 

 the base, on the outer side, a large, coarse appendage, which is cur- 

 ved forward and upward, and is at the base continued in the form 

 of a tooth directed backwards, towards the protuberance of the tibial 

 joint. Of the very complicated parts of the bulbus that which most 

 attracts attention is a long appendage , which proceeds from a horny, 

 thick process on the under side of the bulbus, is at first directed 

 backwards, but presently curved upward and forward, forming a 

 membranous, pale, almost circxdarly curved band on the outer side of 

 the bidbus. There are no coarse bristles or spines on the anterior 

 thighs. The female is easily distinguished from its nearest relations 

 by its thickened palpi, etc. ; the vulva forms a thick conico-cylindrical 

 process, rounded at the extremity, and reddish or yellowish, with 

 a deep fovea on either side at the apex : viewed from the side it looks 

 as if perforated at the apex, and exhibits there a little tooth in 

 the posterior (upper) border. 



Ther. rufum Eeuss is erroneously referred by Westring to Li- 

 w/phia scopigera Grube or L. rufa Westr. See that species above, p. 

 64. A renewed study of Reuss' description has convinced me, that 

 Ther. rufum is identical with the species now before us, at least the 

 male. Concerning its bulbus it is stated, that "aussen sind mehrere 

 gewundene Korper, namentlich ein ftalbdurchsiehtiger, pergamentartiger, 

 der sich weit wegziehen lasst". The female's vulva is said to consist 

 of ' einem breiten und dicken Zapfen, der an der Spitze rothbraun 

 ist". Compare our description above. The female of Bathyph. brevi- 

 palpus Menge seems to belong to this species, judging both from 

 the description and the figure of her palpi given by Menge (Preuss. 

 Spinn., I, p. 123, line 16, PI. 22, tab. 47, fig. Hy, the male on 

 the contrary is certainly identical with E. ceqnalis Westr., on which 

 see p. 135. 



The length of the tibial and patellar joints of the male's palpi, 

 and even the convexity of his mandibles, the development of the 

 tooth towards the extremity of these organs etc., are in this species 

 very variable; and a careful microscopical examination of the organs 



