of the Genera of the Arancse. 17' 



Spid. j").G3, 18G9) Ariamneft, on the ground that it was identical 

 with Ariadna, And. in Sav. ; but this action is no longer 

 admitted as valid by systeniatists — ct". Alius (Arachnida) and 

 Alia (Hymono|)tera), both names being now accepted. 



Ariadne is, however, preoccupied by Ilorsfall for Lepido- 

 ptera, 1829. 



Type, Ariadne fagellum, Dolcschall, 1857. — Amboina. 



Lagenicola, p. Simon, Hist. Nat. Ar. p. 316 (1864). 



A single species only was originally referred to this genus : — 

 L. Dournerci (Walck.). — Bois de Boulogne. 



Both Walckenaer and Simon evidently mistook the identity 

 of this spider in referring it to the group Alius, as Simon 

 hinjself points out in Ar. Fr. iv. p. 299. It is perfectly 

 evident from Walckenaer's description of the cocoon (Ins. 

 Apt. i. p. -42.5) and from Simon's remark — " Coqueen forme 

 de bouteille " — and from his drawing on page 322 oj). cil., 

 that the species is really an Agroeca. 



The question is which species, for the name Doumerci 

 must be retained and one or other species referred to it, 

 according to the rules of nomenclature. Walckenaer says : 

 " trouvee vers le milieu de join au bois de Boulogne, dans Ic 

 pare de Madrid, par le Docteur Doumerc." 



Simon (Ar. Fr. iv. pp. 302,304) says that both the species 

 Agroeca JIaglundi, Thor., and Agra-ca brunnea, Blk., arc 

 found in the environs of Paris — the former being " tr^s com- 

 mune dans les bois des environs de Paris," the latter being 

 " beaucoup moins commune que la preccJente." 



I here reserve the name Doumerci for Haglundi, Thorell, 

 the first name of course having precedence. The type of 

 Agroeca is A. Unolina (C. L. Kocii), = A. brunnea, Blackw., 

 so that Lagenicola becomes a synonym oi Agrceca, Westring, 

 1862. 



Type, Lagenicola Doumerci (Walck.). — Europe. 



Treciiona, C. L. Koch, Uebersicht, v. p. 74 (1850). 



Six species were originally included under this name : — 

 (1) Mygale zebra, Walck., C. L. Koch, Die Arachn. ix. p. 60, 

 fig. 729; (2) M.bislriata, C. L. Koch, v. p. 16, fig. 347; 

 (3) Jy. incana, C. L. Koch, ix. p. 70, fig. 73,5; (4) M. ic 

 terica, C. L. Koch, v. p. 22, fig. 351; (5) M. lycosiformis, 

 C. L. Koch, ix. p. 85, fig. 745 ; (0) M. drassiformis, C. L. 

 Koch, ix. p. 69, fig. 734. 



The genus was first broken up by Simon, who in 1864 

 removed ^L zebra, Walck., and J/, drassiformis, C. L. Koch, 



Ann. cf; Mag. N. Hist. Ser. 7. Vol. ix. 2 



