and Species of Scorpions. 329 



normal aculeus) from Virginia, belonging to the collection of 

 Owens College, Manchester. 



It is a singular thing that Dr. Karsch, who has seen this 

 species, referred it to Uroctonus^ and characterizes Uroctonus 

 as having a series of teeth on the lower border of the digit of 

 the chelicerge. Dr. Marx also referred it to Uroctonus. Bat 

 I cannot see any series of teeth at all comparable to the series 

 presented by Uroctonus. On the contrary, there is only one 

 tooth, not so large it is true as the one in Nndruncs, but 

 occupying the same position, and the edge in front of this 

 may be finely roughened ; but there is no structure presented 

 that I should call a series of teeth. 



Of course a solution to the difficulty is that I have 

 examined a species wliich is not phceodacti/Ius. I cannot, 

 however, without further evidence bring myself to believe 

 this, on account of the closeness of the application of Wood's 

 description to my specimen. 



Hadrueoides, gen. nov. (PL XIV. figs. 16 and 17.) 



Allied to Carahocfonus, Pocock, but recognizable by the 

 dentition on the digits of the chelte. 



In Caraboctonus Keyserlingii the median series consists of 

 a few (six) longitudinal slightly overlapping rows of denticles, 

 the posterior denticle of each being enlarged, while on the 

 inner side of the anterior extremities of each row there is a 

 large tooth, all the large teeth together forming an inner 

 series. This arrangement is well shown in fig. 21, pi. Ixxxiii. 

 vol. ii. of the Trans. Zool. Soc* 



In Iladruroides the dentition is on the same plan as in 

 Caraboctonus^ but the large teeth of the inner series are further 

 back from tlie ends of the median rows, and close to the 

 latter on the outer and inner side are a few (two or three) 

 supernumerary denticles. 



Type Hadrurus charcasus (Karsch). 



On p. 92 of the August number of the 'Annals' for this 

 year I referred II. charcasus oi Karsch to Caraboctonus. But 

 the dentition of the clielaj seems to me to be of sufficient 

 importance for the establishment of a genus f- The species 

 in the Museum identified as j)robably maculalus or robustus, 



* In fact there can be no doubt that tlie " lelet/onus from Coqulnibo " 

 mentioned and ligiued by Trol'. l.ankeyter in this paper is the specimen 1 

 have made into the type of Caraboctonus Keyserlinyii Fiirtlicr details 

 are represented on pi. Lxxxii. ligs. 4, li', and Ki, and pi. l.v.xxiii. liys. 7 

 and I'J. 



t The differences belAvoeii Caraboctonus and Jladruruutcx are strictly 

 comparable to those that obtain between Centrurus and Tityus. 



