ON THE ANASPIDACEA, LIVING AND FOSSIL. 567 
and lateral margins are produced into a number of long stout 
spines of equal size. Between the spines are a number of 
short fine bristles (text-fig. 32). 
The uropods have large basal segments furnished dorsally 
with three stout spines. ‘The rami are short and truncated. 
The exopodite has about six long spines on its external 
border, and a number of long compound setz terminally, 
which become shorter as we approach the internal border. 
The setze clothing the endopodite are also much longer termi- 
nally than on the lateral borders. 
The adult animal attains to about + inch. 
The colour is dark, marbled brown; ground colour yellow, 
with numerous black chromatophores. 
Occurrence.—From freshwater reedy pools beside a tiny 
runnel joining the Mullum-Mullum Creek, Ringwood, near 
Melbourne. 
Family Ill. Gampsonychidee (Packard 5). 
In this family may be included provisionally the three 
genera Gampsonyx, Paleocaris, and Gasocaris. 
The thorax is composed of eight distinct segments of 
which the first is smaller than the rest. The succeeding 
segments, both thoracic and abdominal, are subequal in size, 
except the sixth which is somewhat elongated. An antennal 
scale was apparently present. All the thoracic limbs appear 
to have been biramous. 
The body was carried straight without any flexure. The 
eyes were pedunculated. 
Genusl. Gampsonyx (Jordan and v. Meyer 1) (=Gamp- 
sonychus = Uronectes). 
The flagella of the first antennz were apparently equal 
in length. The first thoracic limb was a powerful raptorial 
organ armed with curved claws. The endopodites of the 
hinder thoracic limbs were slender and much elongated. 
VOL. 53, PART 3.—NEW SERIES. 39 
