Arachnids of Venezuela: six new species of the genus Tityus and redescription of Tityus pococki Hirst, 1907, Tityus rugosus (Scenkel, 1932) n. comb., and Tityus nematochirus Mello-Leitao, 1940 (Scorpionida: Buthidae). Acta Biologica Venezuelica, 16(3), Julio 1996: 1-38. 5 [Zoological Record Volume 136]