20 



a 9 jun. of this species are in fact 9 mm - long, whereas E. bicomis is 

 stated to be but 4 '/V' 11 "'- Neither is the E. Ucomis described by 

 Blackwall (Spid. of Gr. Brit., II, p. 361, PL XXVII, fig. 260) more 

 than "7 2) inch" (about 5 mm )long. This spider, of which the Rev. Mr. 

 Cambridge presented me with a cf specimen, and which appears to me 

 fully to correspond with Walckenaer's figures of E. bicomis (H. N. 

 d. Arane'ides , 2 , fig. 2 ; Faune Franc. , Arachn. , PI. 9, fig. 5) , shows 

 also some deviations in form from E. bicomis Westr.; I am there- 

 fore obliged to consider this latter as a distinct species separate from 

 the true E. bicomis Walck., Blac .w. , and I call it E. omceda '). In E. 

 omceda cf > the undersides of the coxae of the 1 st pair of legs are at 

 their extremity, outwards, armed with a very strong thorn pointing 

 downwards, and the coxa? of the 2 nd pair are smooth below: in E. 

 bicomis Walck. and Blackw. cf, that thorn is much smaller, and 

 the cox33 of the 2 nd pair have on the corresponding place a small, 

 very blunt tubercle. In the former the thighs of all the legs are 

 armed below with a row of spines, and of the spines with which 

 the underside of the thighs of the 4 th pair is armed, that which 

 is situated nearest the base is far stronger than the others. In E. 

 bicomis Blackw. cT, the thighs of the 1 st pair are without spines 

 below, and the spine nearest the base on the underside of the 4 th 

 pair is not stronger than the others. In E. omceda the eye-area is 

 perpendicular, and forms , seen from the side, a right angle with the 

 back of the pars cephalica: in E. bicomis Blackw. that area is 

 somewhat sloping. The male's bulbus genitalis in E. omceda exhibits 

 on the outer side an easily perceptible, large, curved appendage, 

 thicker at the base and tapering towards the middle, and thence 

 rapidly dilated on both sides, like a hammer or rather a dolphin's 

 tail. (Conf. Kec. crit. Aran., loc. cit.). In Blackwall's E. bicomis 

 there is no such appendage to the bulbus genitalis. In cf of both 

 species the tibiae of the 2 nd pair of legs are somewhat incrassated, 

 thicker towards the base, and armed on the inner side with long 

 spines. The female's vulva in E. omceda displays a short, broad 

 corpus, which on the anterior (inferior) side has 3 longitudinal, 

 converging furrows: from its apex rises a conically pointed scapus, 

 which is very short, though longer than it is broad. 



E. bicomis Menge (Preuss. Spinn. , I, p. 66), in cT of which 

 the anterior central eyes are somewhat more widely separated than 



1) ojpoiS?]?, with tumid or large shoulders. 



