neio Species of Scorpions. 415 



CRiicl.i] fcgnicnt, jislorg as tlie fouitli; median excision deep; 

 frontal loLf s quadrate ; interocular area smooth and polished ; 

 sides granular. 



Terga closely granular ; sterna smooth. 

 Tail very long, a little more than six times as long as the 

 carapace; tirst segment almost or quite twice as long as wide, 

 fifth nearly five times as long as wide ; the superior keels of 

 the first, second, and third segments gradually elevated 

 behind and ending in a small spinit'orm tooth. 



Vesicle large, its width equal to that of the third segment, 

 its heiglit equal to its width. 



Chela: : humerus granular above ; brachium smooth above 

 and Lehind, a few large scattered ])unctures behind ; a row of 

 8-9 pores below ; hand normally but not so strongly keeled 

 as in U. armatus^ Poc, and U. novce-hoUancIice'^', quite smooth 

 above externally and belo-sv ; very weakly granular internally ; 

 about 12 pores along the underside of the keel. 



Legs with femora weakly granular, patella smooth ; pro- 

 tarsi of first and second with 5 external spines. 

 Pectinal teeth 17-18. 



Mcasurethents in millimetres. — Total length 9-4 ; length of 

 carapace 10^ of tail 62, of its fifth segment 15. 



Loc. ]\Juldiva in North Queensland, J" {Dr. Broom). 

 Diflt'ers from all the known species of the genus in the 

 great length of the tail in the male. The nearest to it in this 

 respect is U. Jioplurusf, Poc, from the East Murchison Gold 

 Field, West Australia, in which the tail is about five times 

 as long as the cai apace. The two species also resemble each 

 other in the large size of the vesicle ; but in other characters 

 ihey are very distinct. According to the table of the species 

 of the genus that 1 published in the paper cited below, the 

 species ranges itself under heading b'' alongside of U. novce- 

 hollandice, but, apart from the great length of the tail, may 

 be recognized bj the posteriorly spiniform dorsal crests of this 

 organ, the large vesicle, &c. 



This species is further of great interest inasmuch as it is 

 the first representative of the genus Urodacus that has been 



* I learn from Prof. Kraepelin {in litt.) that the specimens from Perth 

 in the 15ritish ^Museum ■wliich I formerly identifitd as U. novce-hoUaudUf, 

 Pet., and which were, I believe, so named by Peters himself, are n(it 

 .-pecitically identical with tlie specimens in the Berhu Mut^eum described 

 under that name by this author. l*robably vtanicatus, Thor., is their 

 correct title, but, peiidinj^ the publication of Prof. Kraepelin's latest con- 

 clusions on this point, I retain fur them the term I have hitherto assigned 

 to them. 



t Ann. t^ Mag-. Nat. IIi>t. (7) ii. p. G4 (1898). This paper contains 

 diatrroses of all the species of the ijenus known to me at that time. 



