476 



In addition to these, however, Mr. Waite also forwarded 

 a few additional Crustacea collected by Capt. S. A. White in 

 an expedition to the north-west corner of South Australia in 

 19 14 J 1 ) This collection does not contain any of those repre- 

 sented in Mr. Waite's, but there are in it two other 

 Phyllopods that I have been able to identify. There are also 

 some specimens, mostly dried, of two Ostracods and one 

 Daphnid, but these I have not attempted to name. 



All the Phyllopods belong to species already known, but 

 the distribution of one or two is now somewhat extended by 

 the record of their occurrence in Central Australia ; they are, 

 however, all species widely distributed in Australia. 



Among the specimens of Estheria packardi from Cooper 

 Creek I found two examples of a Copepod belonging to the 

 genus Boeckella. Both were males showing the last pair of legs 

 prehensile and terminating in a long, movable claw in the 

 manner characteristic for the genus. The antennae are very 

 similar to those of Boeckella triarticuhita, the typical species 

 from New Zealand, which has also been recorded from Aus- 

 tralia by Sars. Other species of the genus have been described 

 by Sars and by G. W. Smith i2 ) from Australia and Tasmania, 

 and I do not feel justified in identifying my two specimens 

 specifically, but the occurrence of the genus in Central Aus- 

 tralia is worthy of record. 



These freshwater Crustacea can, of course, be obtained 

 only when the waterholes contain water ; after rain they 

 hatch out, often with great rapidity, from eggs previously 

 deposited in the dried mud. If future collectors would bring 

 back portions of the dried mud from the waterholes, it would 

 be possible to hatch out the Crustacea and study them in 

 the laboratory, as Sars has done those from New Zealand, 

 Australia, and other parts of the world. This would be easier 

 and more likely to lead to the discovery of new forms than 

 trying to collect the animals on the rare occasions when the 

 explorer finds the pools are full after rain. 



I have been unable to identify the two terrestrial 

 Isopoda with any of those previously described, and have 

 therefore described them as new species. This, however, is 

 somewhat uncertain, because the species of terrestrial Isopoda 

 are extremely difficult to distinguish, and it is quite possible 

 that one of them, at any rate, may be identical with one 

 of the many species described by Budde-Lund ; without 

 having actual specimens for comparison it is, however, very 

 difficult to decide. If I am right in referring the first Isopod 



<i) Trans. Roy. Soc. S. Austr., xxxix., 1915, p. 707. 

 (2) G. W. Smith: The Freshwater Crustacea of Tasmania, 

 Trans. Linn. Soc, (2), xi., 1909, p. 85. 



