94 Mr. R. I. Pocock on Neotropical Scorpions. 
collection of the late Count Keyserling, to whose memory I 
dedicate the species, and one small dry one in the Museum 
collection, ticketed, though I doubt with accuracy, Brazil. 
One of the examples from Coquimbo has larger pectines 
than the others and appears to be a male; the tail of this is 
unfortunately gone, but the palpi show no differences from 
those of the adult female described. 
Two others from Coquimbo and the one from Brazil are 
young, and it is interesting to note that in them the palpi are 
much yellower and the hands much thinner than in the 
adults. 
Characteristic of this species are the granular keels upon 
the last sternite and upon the first and second caudal 
segments. 
Part IIT. 
Fam. Bothriuride. 
Bothriurus bonariensis (C. Koch). 
Broteas bonariensis, C. Koch, Die Arachniden, x. p. 12, fig. 762, ¢. 
Broteas ev ythrodactylus, id. tom. cit. p. 16, fier 764, 2. 
Chactas Haversvi, Butler, Cist. Ent. i. p. 325 (1874). 
Chactas literarius, id. ibid. 
Telegonus vittatus, Gervais, Arch. Mus. iv. p. 227 &c. pl. xi. fig. 30. 
Bothriurus vittatus, Thorell, Act. Soc. Ital. xix. pp. 168 &c. ; but in all 
probability not synonymous with Scorpio vittatus of Guérin, Voyage 
de la ‘Coquille,’ Arachnides, p. 50. 
This species is extremely abundant in Uruguay and Rio 
Grande do Sul, whence the British Museum has received 
upwards of fifty examples. We also have a specimen from 
Corrientes, and two ticketed Moyabama (Peru). This last 
locality, however, may be doubtful. 
The colour of the adult is mostly piceous or rufo-piceous, 
but in the young there is a fine flavous median dorsal band 
and a wide longitudinal stripe on the under surface of the 
tail; moreover the interocular area and the legs may be 
fulvous. 
I have never seen either an adult or a young of either sex 
approaching the colouring that is ascribed to Scorpio vittatus 
of Guérin. Dr. Thorell has made the same observation. 
This fact renders it probable to my mind that Gervais fell 
into error in his identification of vittatus. 
In vittatus the anterior and posterior borders of the carapace. 
and the posterior borders of the tergites are said to be black, 
and a similar coloration is presented by Scorpio Grervaistd of 
Guérin (Icon. Régne Animal, Arachnides, p. 10), and by 
