Classification of Scorpions. 313 
and upon what is stated respecting the situation and structure 
of the ocular tubercle. 
Ananteris, Thor., I have not seen. Charmus, Hetero- 
charmus, and Stenochirus are, I suspect, identical. 
Part [].—Deseriptions of new Genera and Species. 
Family Buthide. 
Tityus asthenes, sp. n. 
Upper surface of the trunk lurido-fuscous: tail fulvous, 
fulvo-brunneous towards its posterior end; legs, palpi, and 
lower surface flavous, with the exception of the digits which 
are fuscous. 
The upper surface of the trunk much more finely granular 
than in 7. americanus. 
Tail longish and slender, about five and a half times the 
length of the carapace, the second segment about the same 
width as the fifth, the intercarinal spaces very finely granular, 
the keels not very strong, granular, the terminal granule of 
the superior keels not larger than the rest; the median lateral 
keel not present on the second segment; the vesicle a little 
narrower than the fifth segment, wider than it is high, with a 
large spine beneath the sting as in 7. americanus. 
Palpti long and slender, finely granular, and normally 
carinate ; on the hand the external of the three keels which 
run from the immovable digit is entire as in 7’. stigmurus 
(Thor.) ; hands a little wider than the brachium, the digits 
long, slender, in contact, furnished with 14-15 median rows 
of teeth, the movable twice the length of the hand-back, longer 
than the fifth caudal segment, and much longer than the 
carapace. 
Pectines furnished with 19 teeth, the basal intermediate 
lamella internally expanded. The sterna coriaceous, being 
studded with low smooth-topped granules. 
Legs long ; the lower surface ot the feet studded with a few 
sete. 
Measurements in millimetres.—Total length 55, length of 
carapace 5°8, of tail 34; width of first segment 2°6, of fifth 
2°3; length of fifth segment 7; width of vesicle 2, of hand 2; 
length of hand-back 4, of movable digit 8. 
A single female example from Poruru (Peru). 
This species belongs to the same category as 7. americanus, 
but from this last-named it may be recognized by its much 
greater smoothness, difference in colour, slender tail, &e. 
