66 Australian Scorpions of the Genus Urodacus, Pet. 



ending behind in a large triangular 

 spiniform process (true to a less ex- 

 tent of (5 oi abriq}tus). 

 a*. Spines on caudal segments directed 

 obliquely backwards and upwards ; 

 frontal portion of carapace not 

 roughened with tubercles, cara- 

 pace as long as fifth caudal seg- 

 ment ; vesicle small, its width 

 less thau that of fifth segment, its 

 height less than width of fourth ; 

 hands smooth above ; a single 

 row of about 10 pores on brachium 

 and 10 on hand ; 6 pro tarsal 

 spines on first and second legs . . armatus, Poc, J . 

 b^. Spines on caudal segments ver- 

 tical ; frontal portion of carapace 

 tubercular, carapace considerably 

 shorter than fifth caudal segment ; 

 width of vesicle exceeding that 

 of fifth caudal segment, its height 

 exceeding width of fourth ; hands 

 granularly reticulate above ; bra- 

 chium with about 12, hand with 

 about 16 pores in a line below, 

 with additional pores near the 

 base of the finger ; 5 protarsal 

 spines on first and second legs . . hoplurus, sp. n., S . 

 P. Upper keels of first four caudal seg- 

 ments either not elevated or but 

 little elevated, at all events less 

 strongly elevated than in armattis 

 and hoplurus. 

 a'\ Tergal plates of abdomen in adult 

 covered with fine granulation, 

 ft". Frontal lobes of carapace rounded 

 and separated by a deeper emar- 

 gination ; upper crests of first, 

 second, and third caudal seg- 

 ments more elevated ; sides of 



segments less convex abruptus, Poc, S • 



b*^. Frontal lobes of carapace more 

 squarely truncate, separated by 

 a shallower excision ; upper 

 crests of tail not elevated ; sides 

 of segments more markedly 

 convex. 

 a''. Area of carapace in front of 

 median eyes covered with 



fine close-set granules (jranifrvns, sp. n., cj", 



b''. Area of carapace in front of 

 median eyes smooth and 



finely punctured novcs-lwllandm, Pet., J 5 



b^. Tergal plates of abdomen smooth 

 and polished in the middle, the 

 anterior closely and finely granu- 



