342 REV. O. p. CAMBRIDGE ON SPIDERS [Apr. 20, 



palpal organs, which are rather simple in structure, are surrounded 

 on their outer side by a long, strong, corneous, spine-like process, 

 which originates at their centre, and whose obtuse extremity projects 

 beyond the extremity of the digital joint. 



The abdomen, looked at from above and behind, is elongated 

 narrow oviform, more or less pointed at its posterior extremity ; seen 

 in profile, the normal hinder part is produced into a long, slightly 

 curved, tapering prolongation, the spinners being generally nearer 

 to the fore extremity of the abdomen than to the point of elon- 

 gation. 



The female resembles the male in colours, excepting the legs, 

 which are of a uniform pale whitish yellow, the palpi being black- 

 brown ; the abdomen also is shorter, but very broad at its fore ex- 

 tremity. 



It is with some hesitation that I have described this Spider as an 

 Arffi/rodes. Numerous examples of both sexes were included in Mr. 

 Thwaites's Ceylon collection. 



List of Species above noted and described, with references to locality, 

 page, plate, and figures. 



Argyrodes flavcscens, sp. n., p. 321, PI. XXVIII. fig. 1. Ceylon. 



concin7ia, ep. n., p. 322, PI. XXVI] I. fig. 2. Amazons. 



epcirce, Sim., p. 323, PI. XXVIII. fig. 3 a. S. Europe and Madagascar, 



Asia and Africa. 



samocnsis, sp. n., p. 323, PI. XXVIII. fig. 3. Samoa Islands. 



nepkilce, Tacz., p. 324, PI. XXVIII. figs. 4, 4 a, 4 b, e, 4 c, 4 d, f. 



Amazons. 



argcniata, sp. n., p. 325, PI. XXVIII. fig. 5. Amazons, Ceylon, Madar 



gascar, and East Indies. 



rostrata, BL, p. 325, PI. XXVIII. flg.s. 4 a', 4 h'. Soychelle Islands. 



juamda, sp. n., p. 32(i, PI. XXVIII. fig. 6. Parana, S. America. 



. antipcdiana, sp. n., p. .327. Australia and New Zealand. 



higcns, sp. n., p. 327, PI. XXVIII. figs. 2 a', b', c'. Amazons. 



abscissa, sp. n., p. 328, PI. XXIX. fig. 7. Madagascar. 



Jissifroiis, Cambr., sp. n.. p. 329, PI. XXIX, fig. 8«'. Ceylon, Am- 



boina. 

 jyrocrastinans, sp. n., p. 330, PI. XXIX, fig. 9. Bombay. 



inguinalis, Thor., p. 330, PL XXIX. fig. 9 a'. Amboina. 



amboinensis, Thor., p. 331, PI. XXIX. fig. 8. Amboina. 



scintillulana, sp. n.. p. 332, PI. XXIX. fig. 10. Ceylon. 



namta, sp. n., p. 333, PI. XXIX. fig. 11. Ceylon. 



bicornis, sp. n., p. 334, PL XXIX. fig. 12. Parana, S. America. 



sextuberculata, sp. n., ]). 335, PL XXX. fig. 13. Amazons. 



. ululans, sp. n., p. 336, PL XXX. fig. 14. Amazons. 



viinax, sp. n., p. 33(), PL XXIX. figs. 15, 15 «, 15 6. Madagascar. 



affinis, sp. n., p. 337, PL XXX. figs. lt>,«, dj, hj, g, 16 b, 16 c, 16 e. 



Parana. 

 obtusa, sp. n., p. 338, PL XXX. fig. 17. Amazons. 



ampUfrom, sp. n., p. 339, PL XXX. figs. na',d',e\ 17 b', c',d',e',f', 



g, h. Amazons. 



infelLv, sp. n., p. 340, PL XXX. fig. 18. Amazons. 



felix, sp. n., p. 340, PL XXX. fig. 19. Parana. 



nigra, sp. u., p. 341, PL XXX. fig. 20. Ceylon. 



