Mr. Blackwall's Descriptions of neiv Species of Spiders. 609 



In treating upon the Phytophilce in the Faune Francaise, Aran^ides, p. 181, 

 M. Walckenaer remarks, "on ne pent se dissimuler, que ce petit groupe, dont 

 les caract^res ne sont pas assez tranches pour former un genre, est d'une 

 classification difficile et douteuse, et que, Drasse par ses organes les plus 

 essentiels, il s'allie sous d'autres rapports aux Clubiones et aux Thdridions." 



The difficulty and uncertainty alluded to in the foregoing quotation no 

 longer exist as regards those species known to be furnished with eight spin- 

 ners and with calamistra, and the establishment of the genus Ergatis is pro- 

 posed for their reception. 



Family Lycosid^, 



Genus Lycosa, Latr. 



3. Lycosa rapax. Cephalo-thorace magno, saturate brunneo, fascia mediana 

 lata lateralique obscuriore flavescenti-brunneis ; mandlbulis maxillis labio 

 sternoque saturate rufo-brunneis ; pedibus robustis, rufescenti-brunneis, 

 ad femora colore saturatiore maculatis ; pari 4to longissimo, dein Imo, 

 3tio brevissimo ; abdomine fascia lata mediana flavescenti-brunne^ nigro- 

 marginata, margine postic^ interrupto et cum maculis parvis lateralibus 

 vittas obliquas efFormante. 



Length of the female f ths of an inch ; length of cephalo-thorax ^ ; breadth \ ; 

 breadth of abdomen \ ; length of a posterior leg ^ ; length of a leg of the 

 third pair f . 



Cephalo-thorax large, hairy, compressed anteriorly; sides depressed, with 

 slight furrows diverging from the upper part toward the margins, a 

 narrow indentation occurring in the medial line of the posterior region ; 

 colour dark brown, with a broad, yellowish brown band extending along 

 the middle, and an obscure one of the same hue above each lateral mar- 

 gin. Four eyes, much smaller than the rest, form a transverse row in 

 front ; the other four, situated on the sides and anterior part of the 

 cephalo-thorax, describe a quadrilateral, the anterior ones of which are 

 the largest of the eight. Mandibles powerful, conical, vertical, armed 

 with a few teeth on the inner surface ; they are of a dark brown colour, 

 with a faint tinge of red near the base, in front. Maxillae straight, en- 

 larged and rounded at the extremity, of a reddish brown hue. Lip nearly 



