Blind Victorian Freshwater Crustacea. 56L 
3. Want of eyes.—Agrees with the New-Zealand forms 
and also with P. Shephard. 
4, Mouth-parts.—Of the New-Zealand forms, nearer to 
P. assimilis than to P. typicus, but nearer to P. australis 
and P. Shephardi than either, on account of their stouter 
mandibles. 
Janirella pusilla.—This species agrees in general shape 
and leading features with Leach’s genus Janira, also with 
Sars’s genus Janiropsis, which so far contains only one 
species, viz. J. breviremis, from the west coast of Norway. 
Sars says that there are no known freshwater Ianiridz (5) ; 
but from Stebbing I notice that Jera Guerne?, Dollfus, of 
the same family is an inland river species of the Azores, and 
also that J. Nordmann (Rathke) and J. albifrons, Leach (two 
British species), are often at home in runnels of fresh water 
traversing sea-beaches (4. p. 379). 
Niphargus pulchellus—Mr. G. M. Thomson describes two 
species closely allied to the genus Niphargus from Tasmanian 
surface-freshwater (6). These species differ considerably from 
N. pulchellus, but of the two it is nearest to VV. montanus, 
obtained from pools on the summit of Mount Wellington, 
where also Phreatotcus australis was taken. In contradis- 
tinction it has the antennz and terminal uropoda very short, 
the body stouter, and it possesses eyes. My species appears 
to be nearer to some of the Hnglish forms, but I have no 
specimens for comparison. 
Special Characteristics of the Species. 
The special characteristics of the three species are :— 
1. Loss of eyes.—In each there is a total loss of the crystal- 
line lens and pigment. In Jantrella pusilla there is, how- 
ever, on the dorsal surface of the cephalon of some, but not 
to be seen in all, a pair of small circular areas somewhat 
clearer of colour than the surrounding parts, which may be 
vestiges of eyes, but of which I have doubt. As mentioned 
in my paper (9), after examining serial sections through the 
head of P. gracilis 1 failed to detect any trace of optic lobes 
or nerves. 
2. Colour.—In both P. gracilis and N. pulchellus the 
colour is quite white, without any trace of pigment; but a 
female, with eggs in the marsupium, had the eggs of a 
decided yellow colour. J. pusilla has a slight general 
ochreous colour, but without any definite markings or 
pattern. 
Ann. & Mag. N. Hist. Ser. 7. Vol. viii. 39 
