Nicholls — Two New PhrcaioivHh, 
l8:-3 
soa. Yet others were seeured from ;t snaill ])ool fed by a spring- 
beiieatli a huge granite boiihh'r, high up on the southern slopes of 
Mt. Clarence (Albany) and in its swani])y overflow. A later tri]» 
made, in January, 11)25, to Two Peo]de Bay, some thirty miles or 
so to the Eastward of Albany, resulted in the discovery of this species 
as an abundantly occurring form in that locality. 
At Denmark, thirty miles to the West of Albany, and at other 
jhaces still more -westwardly, to Nornaluj) (nearly eighty miles), I 
have, however, searche<l in vain for this Plireatoici<l, nor has it 
been found in the relatively abundant fresh waters of the Porongorup 
Rang‘es, some forty miles inland. Nor yet has any trace of it been 
seen in the Margaret River district at the southern end of the West 
Coast. 
AmiJliisoims Untoni, then, may be considered as likely to prov(‘ 
a relatively wides]>read form occurring in shallow fresh waters arur 
to the Coast of South AVesteni Australia from the vicinity of Albany 
eastwards, but probably not existing in the dark ])eaty waters 
(locally, ‘'coffee” water) of the more western creeks and streams. 
The known range of A. palustns, too, is now greatly extended. 
It has been taken freely in many of tlu' shallow lakes in the environs 
of Perth. J have collected it, also, from swamps and ditches at 
Pinjarra, nearly sixty miles to the south, and near to York, some 
forty miles inland. In these two latter cases there are exhibited 
differences which may prove to 1 h' of varietal value. 
Concerning A. latiprs nothing furtlun- has been recorded since 
the publication of Chilton’s pa])er in 192.!. 
Habits. An account of the habits of these and other Phreatm- 
cids will be found below. 
Phreatoicus joyneri 
nov., Plates XXV, XXVI, and PI. XXIX, 
b'io-s. 40-44. 
Specific Diagnosis. Body robust, surface smooth, with very few 
scattered hairs. Head somewhat shorter than combined length of 
tirst and second peraeon segments, produced into i)ostero lateral lobe, 
which touches maxilliped, with well marked vertical groove slightly 
proximal to hinder border. Eyes small, rouml, with few ominatidia. 
Peraeon sub-cylindrical. Epi.nera (coxal joints) well developed. 
First seo-ment very short in mi<i dorsal line, longer on ventral bordei, 
scarcely fused with the head, second, third, a.nl fourth segments 
equal, fifth and sixth equal but shorter, seventh distinctly shorter. 
Pleon moderately long, having, with the telson, a length almost 
