

2 RECORDS OF THE S.A. MUSEUM 
Famiry PHAENNIDAE Sars 1902. 
A single specimen of what appears to be a male of the genus Pseudophaenna 
occurred in one of the collections (III). Without the corresponding female it is 
difficult to ascertain its systematic position with certainty and the description will 
therefore be withheld until further material has been obtained. 
Famity CENTROPAGIDAE Sars 1902. 
Genus GuapIorerENs Henry 1919. 
Henry, 1919, p. 31; 1922, p. 559. 
The genus contains five species: pectinatus (Brady, 1899), from coastal 
waters of New Zealand; brevicornis and spinosus Henry (1919) described from 
freshwater in New South Wales, the former being subsequently recorded and fully 
illustrated by Dakin and Colefax (1940) from the coastal plankton of that re- 
gion; gracilis Kiefer (1931) from freshwater in New Zealand; and subsalaria de- 
seribed by Percival (1937) from New Zealand lakes. The new species deseribed 
below was taken at Blanche Harbour at the north end of Spencer Gulf. 
Brady (1899) described (p. 36) and figured (pl. ix, fig. 24-7) a species, Centro- 
pages pectinatus, which almost certainly should belong to this genus. Unfortu- 
nately the specimens were damaged and so his description is very incomplete, but 
from the strueture of the fourth leg (fig. 24) which bears a large curved spine 
on the coxal segment, and the fifth leg which has the inner claw on the middle seg- 
ment of the exopod strongly curved and, in general, shows the reduced armature 
found in Gladioferens, I have little hesitation in assigning Brady’s species to this 
genus. Its occurrence is not inconsistent with this conclusion since it was found in 
the coastal waters of New Zealand and the genus has been recorded both from 
that region (two species) and from coastal waters (Dakin and Colefax, 1940, and 
the present. collection). 
With regard to the fourth leg of the female in this genus Henry (1919, p. 31) 
states that each leg bears ‘‘a long curved sword-like spine on the inner edge’’ of 
the basal segment and this statement is repeated in the descriptions of the two 
species (pp. 33, 34, 37), and is not corrected in her later paper (1922). Dakin and 
Colefax (1940, p. 91), describing a species identified as @. brevicornis, point out 
that this spine occurs only on the left side, which is in conformity with the condi- 
tion in the species described subsequently. (It may be noted in passing that speci- 
mens collected in 1939 from the Swan River, Western Australia, were indistin- 
guishable from spinosus except that the enlarged spine was found on only one of 
the fourth legs; only females were taken so that it is uncertain whether this was 
correctly identified as spinosus). It is possible that Henry was in error in 
describing this spine as symmetrical, the alternative being that it is variable, but 
there is no evidence to support this. 
It is doubtful if subsaiaria is really distinct from brevicornis, as identified 
and figured by Dakin and Colefax; there is a remarkable agreement in detail in 
the shape and armature of the male second, third and fifth legs and terminal seg- 
ments of the right first. antenna ; the female genital serment of subsalaria as shown 
by Percival might well be that of brevicornis. The right endopod of the fifth leg 
of the male of brevicornis is deseribed by Henry as one-segmented, but the figure 
suggests three segments, which further supports the possibility of their being 
synonymous. The alternative, that Dakin and Colefax are really dealing with 
subsalaria and that this is distinct from brevicornis, is improbable but can only 
be decided by reference to the original material in each ease. 
