32 Mr. F. Pickard-CamLridnre— ^ Revision 



Thalestris lo7ir/imanus, Clans. 



F>(j. 8. Female, seen from the side, X 40. 9. One of the antennules, 

 X 135. 10. One of the second maxillipeds, x lOo. 11. Foot 

 of first pair, X 105. 12. Foot of fifth pair, x 158. 13. Part 

 of abdomen and caudal fiirca, enlarged. 



(?) Ilernnanellajinmnrchica, sp. n. 



Fig. 14. Female, dorsal view, x 40. 15. One of the antennules (im- 

 perfect), X 106. 16. One of the antenna3 (imperfect), X 108. 

 17. One of the first maxilliped", X 220. IS. Oue of the second 

 maxillipeds, X 140. 19. Foot of first pair, X 154. 



II. — A Bevision of the Genera of the AraNE^ or Spiders, 

 wUh Reference to their Type Species. Bj F. PlCKAUD- 

 Cambkidge, B.A., F.Z.S. 



The following notes contain the conclusions wliicli have been 

 reached as to the species which, on consistent principles of 

 settlement, ought to be regarded as the types of the various 

 genera dealt with. 



The genera include those published by Menge in Preuss. 

 Spinu. 1866-78, by J. H. Emerton in Trans. Conn. Acad, 

 vol. vi. 1882, by Friedk. Dahl in Schrift. Naturwiss. Schles- 

 wig-Holstein, Bd. vi. 1886, and in Sitz.-Bericht Gesell. nat. 

 Freunde, Berlin, 1901, and by Enibr. Strand in Archiv 

 Mathem. Natur. B. xxiv. NR. 2, Kristiania, 1901. 



I also take this opportunity to correct some slips in rny 

 former papers and errors occasioned by oversights, or new 

 facts, in connexion with the various steps referred to in the 

 process of ascertaining the types. 



As regards Menge's genera : whenever he definitely cites a 

 Tab. relerring to a single species under the new generic name 

 and before the diagnosis, I regard the species thus referred to 

 as specially characteristic of the genus, and therefore as the 

 type ; though I have in m.ost cases below traced out tlie 

 history of the other species involved, for the sake of reference 

 in case of future disputation. 



In quoting the name JValckenoera, auct., it is here spelt 

 as it was originally by Blackwall, Walckenaeria, and the 

 former is regarded as a misquotation of the latter. 



Ann. & Mag. Nat. Hist. ser. 7, vol. xi. (Jan. 1902), p. 9. 

 Line 1. — Argus, a nom. praocc. by Bohadsch, Anim. Marin, 

 p. 65, Moll. Uastr. 1761. 



