54 Mr. F. 0. P. Cambridge 07i Ctemform Spiders 



arachnologists. The " cribellate " forms have been placed 

 provisionally in the family furnished for their reception by 

 M. Simon in his second edition of the ' Natural History of 

 Aranese ' — the Zoropsidaj. 



I have to thank Mr. R. I. Pocock, o£ the Natural History 

 Museum, South Kensington, for kindly allowing me to ex- 

 amine the collection of Arachnida under his charge and to 

 describe the new forms discovered. 



(ii.) a. Bibliography relatincj to the Cteniform Spiders 

 of the Neio World. 



]805. — C. A. Walckenaf.r. ' Tableau des Araign^es.' 

 1833. — Griffith. ' Anim. Kingdom (Cuvier).' 

 1833. — M. Perty. *l)el. Anim. Brasil.' (Spix and Mavtius), iii. 

 1837. — C. A. Walckenaer. ' Insectes : Apteres,' i. 

 1841. — N. M. Hentz. Boston Soc. Jouvn. Nat. IJist. iv. 

 1848.— C. Koch. ' Die Arachniden/ xv. 

 1872. — M. Taczanowski. Horaj Soc. Ent. Eossice, ix. 

 1873-4. — M. Taczanowskx. Horse Soc. Ent. liossicfe, x. 

 1873. — O. PiCKARD Caimbhipge. Proc. Zool. Soc. Lond., Jan. 

 1875. — N. M. Hentz. ' Spid. United States,' ed. Burgess. 

 1877. — E. VON Keysereing. Verhand. z.-b. Gosell. Wien, t. ii. (viii.). 

 1878. — L. Kocn. ' Aracbniden Australians,' ii. 

 1878. — Karsch. Z. ges. Natur. (3) iii. 

 1879. — E. VON Keyserling. Verhand. z.-b. Gesell. Wien. 

 1870. — Karscu. Zeitsclirift ges. Naturwiss. (3) iv. 

 1880. — Ph. J3ERTKAU. Mem. Cour. Acad. Beljrique, t. xliii. 

 1880. — E. A'ON Keyserling. Verhandl. z.-b. Gesell. Wien, xxix. 

 1880. — Eugene Simon. Bull. Soc. Zool. Fr. 

 1880.— E. VAN Beneden. Bulletin Acad. Belg. (2) xlix. 

 1881. — IIoLMBERG. Ann. Soc. Argentina. 

 1881. — E. Aox Keysereixg. Veriuvnd. z.-b. (Jesell. Wieu. 

 1882.— A. ^\. M. VAN Hasseet. IV. 3de Aflev. Nat. Historic Midden- 

 Sumatra. Leiden. 

 1884. — EtrokNE Simon. Ann. Mus. Genov. xx. 

 1880. — Eugene Simon. Bull. Soc. Zool. Fr. ii. 

 1887. — Van Ha.sseet. Tijdschriit voor Entomologie, xxx. 

 1888. — Van Ha.ssei.t. Tijdsclirift voor Entomologie, xxxi. 

 1888. — EvGi'-.NE Simon. Ann. Soc. Ent. Fr. ^'u'^. 

 1891. — E. VON Keyserling. Brasilienisclie Spiunen. 

 1891. — EroiiNE Simon. Bull. Soc. Zool. Fr. xvi. 

 1892. — O. Pickard Cambridge. Biol. Centr.-Americana, Arach. 

 p. 100. 



(ii.) b. List of tic 10 Species and other Forms more 

 csp>eciaUij noted. 



Genus Ctenus (? Walck.). 



C. Beidtji, sp. n., $ . — Santarem, Lower Amazon?. P. 78, PI. TIT. 



tigs. i. a, ii. 

 C. Aitdreusi, sp. n., $ . — Santarem and Para, Lower Amazons. P. 79, 



PI. in. tig. ii.b. 



