6 CHAS. CHILTON, AMPHIPODA. 



peduncle swollen and hemispherical, the third densely fringed with long hairs and the 

 f lägel] um very slender and longer than the whole animal. From the resemblance in 

 this and other points to Argissa, Walker established the family Argissidae for these 

 tvvo genera. Barnard (1916, p. 142) says he fails to see any imperative need for 

 the creating of this family as the differences between the two genera are as great 

 as between them and the other genera of the Haustoriidae. In 1888 Stebbing had 

 provisionally placed PlatyiscJmopus under the Pontoporeiidae and in Das Tierreich 

 Amphipoda published in 1906 and in the »Thetis» Amphipoda in 1910 he retained 

 it under the same family though he altered the name to Haustoriidae. P. neoze- 

 lanicus Chilton (1897, p. 1), described from a single female in 1897 differs in the 

 gnathopods, third uropods and especially in the telson which is double or very deeply 

 cleft, and seems to approach more nearly to Urothoe. It is perhaps doubtful if it 

 should be retained under PlatyiscJmopus, but it may remain there until further 

 specimens are obtained. 



Paraleucothoe novae-hollandiae (Haswell). Fig. 2 a — c. 



Lcucothoe novae-hollandiae Haswell, 1880, p. 329, pl. 20, fig. 2. 

 Paraleucothoe novae-hollandiae Stebbing, 1906, p. 169, and 1910, p. 581. 



Localitj\ Förty -five miles W. S. W. of Cape Jaubert, N. W. Australia, 54 ft. 

 depth. Numerous specimens found in Polycarpa aurala (Q. G.) f. clavata Hartmeyer. 



Fig. 2. Paraleucothoe novae-hollandiae (Haswell). a. First gnathopod of male. b. Seo-ond gnathopod of niale. 



c. First gnathopod of female. 



These specimens agree on the whole well with the descriptions given by Has- 

 well and Stebbjng as regards the males. I have also been able to compare the 

 Cape Jaubert specimens with co-types of Haswell's species from Port Jackson and 

 have no hesitation in referring them to this species. The males agree very closely 

 except that in some of the older males from Port Jackson the concavity of the palm 



