HIRST—REPORT ON THE ARACHNIDA OTHER THAN ARANEAG 30 
that the terminal part of the first tarsus is bisegmented in Sitalces and Podoctis, whilst it 
is said to be undivided in Hrecanana, but, even if this is really the case, I doubt if it is of 
generic importance. 
It must be mentioned, however, that the number of the segments of the terminal 
part of the tarsus of the first and second leg is constant in the family Cosmetidee, the 
segments being always three in number (see Roewer, Arch. Natg. A, 1912, heft 10, p. 3), 
but I do not think it follows that this character is of much systematic value in the family 
Phalangodide. Personally, I agree with Dr Loman* and consider that the number of 
tarsal segments of the legs is not a good generic character. 
With regard to the employment of the presence (or absence) and number of thorns or 
denticles on the scutum and free dorsal segments as a systematic character, it must be 
remembered that there is often a considerable amount of variation in this respect—the 
size and sometimes even the number of the spines varying in different individuals of the 
same species. This feature must, therefore, be used with caution, even when determining 
species. I am very doubtful about the use of the presence or absence of armature as 
a means of distinguishing genera. 

Fig. 4. Tbalonius inseriptus Loman. Lateral Fig. 5. Ibalonius inseriptus Loman. 
view of palp of male. Lateral view of palp of female. 
1. Ibalonius inseriptus Loman. (Text-figs. 4, 5.) 
Tbalonius inscriptus +I. bimaculatus Loman, Zool. Jahrb. Syst. v. xvi. pp. 201 and 202 
(1902). 
Ibalonius inscriptus, Hirst, Trans. Linn. Soe. Ser. 2, Zool. xiv. p. 389, text-fig. 7 (1911). 
Paribalonius inscriptus +P. bimaculatus Roewer, Arch. Naturg. (1912) heft 3, 
je eo 
Besides the sexual difference in the shape and armature of the cheliceree, adult 
examples of this species also differ markedly from those of the opposite sex in the 
armature of the palp, the proximal segments of this appendage being much more strongly 
armed in the male than is the case in the female (see Figs. 4, 5); both of these sketches 
are taken from specimens of the two-spotted form of the species (= 1. bmaculatus Loman), 
but this sexual difference is also well-marked in examples of J. cnscryptus which are not 
furnished with spots. 
Locality. For localities see my previous report on the Aranev, Opiliones and Pseudo- 
scorpions of the Seychelles, referred to above. 
* Die Fauna Stidwest-Australiens, Vol. iii. pp. 127—134 (1910). 
