398 A. SEDGWICK. 
and one posterior), except in P. suteri, in which there may 
be three or four. 
6. The genital opening is between the legs of the last pair, 
which are normally developed. 
7. The oviduct is provided with a receptaculum seminis 
with two ducts, 
8. Receptacula ovorum absent. 
9. The oviducts are united at the ovary. 
10. The ovary is exogenous. 
11. The ova are very large (from 1:5 to 2 mm. in longest 
diameter) and heavily yolked. 
lla. In some species the opening of the vagina is at the 
end of a long ovipositor (viridimaculatus, insignis, 
Leuckarti, oviparus) and the eggs are probably laid. P. 
oviparus and viridimaculatus are certainly oviparous, 
and their eggs have sculptured shells. 
12. Nothing corresponding to a trophic vesicle. 
13. Uterine embryos of markedly different ages or of 
about the same age. . 
14. Unpaired part of vas deferens long and complicated. 
15. Spermatophore single and elongated, with a thick case. 
16. Skin pigment mainly black, blue, green, or brown, 
unaffected or but slightly affected by spirit. 
17. Legs without well-developed coxal organs. 
18. Crural glands present in some species (Suteri, nove- 
zealandize), absent in others. When present, in the males 
only. 
19. Accessory glands of the male opening separately 
between the anus and genital opening; in some species 
the openings are far apart, in others (P. Leuckarti) close 
together between the genital opening and the anus. 
On the whole, this group of species, which ranges over the 
whole of Austraha, Tasmania, and New Zealand, presents 
but little variation. There is a little variation in the outer 
blade of the jaw, in the pedal papillz, in the relative ages of 
embryos in the same uterus, and in the crural glands. Also 
in three of the species the oviduct opens at the end of a 
