On Parapherusa crassipes (Laswell). 199 
until near the tip of the tail, where each segment has a 
single, long, slender, tapering bristle or two. The brush- 
like bristles, however, are not absent, since they occur 
toward the posterior end, in frout of the simple forms. 
Each has a slender straight stem, which dilates distally 
into the flattened spinous tip, ove side of which has a 
minute whip or pointed process, the tip being thus asym- 
metrical. The anterior hooks appear to be proportionally 
smaller and broader than in P. tridentatus, and the modified 
main fang is indistinct. In both the serrations of the 
anterior edge resemble transverse grooves of a file, but they 
are perhaps broader and more distinct in the present form. 
The posterior hooks are slightly less, but agree in structure 
with the foregoing. 
The tube is small, elongated, tapered posteriorly, and 
fixed to small pebbles. The dorsal and two lateral spinous 
ridges are diagnostic when compared with the tube of 
P. tridentatus, for the spinous processes on each are iso- 
lated and prominent, as well as occasionally curved, as are 
also the three anterior spines. Moreover, the entire tube 
is more transparent than in P. ¢ridentatus, and the spines 
especially so. It may represent, however, only a variety 
of P. tridentatus, J. C. Fabricius. 
XIX.—Parapherusa crassipes (Haswell), an Amphipod of 
Australasian Seas. By Cuas. Cuiitron, M.A., D.Sc., 
LL.D., F:L.S., C.M.Z.S8., Professor of Biology, Canterbury 
College, New Zealand. 
(Plates VIII.-X.] 
In 1879 Haswell described a new genus and _ species of 
Amphipod from Clark Island, Port Jackson, New South 
Wales, giving it the name of Harmonia crassipes, the name 
being misprinted Harmomia on the original page (p. 330), 
but correctly spelt in the explanation of the plates (p. 849). 
In 1880, in his ‘ Preliminary Report on the Australian 
Amphipoda,’ he used the name Chloris in referring to this 
genus. It was included in the ‘Catalogue of the Australian 
Crustacea’ published in 1882 under the name Harmonia 
crassipes. In 1883 I recorded the species from Lyttelton, 
New Zealand, and added a description of the female, which 
had not been described by Haswell. In establishing the 
genus Haswell stated that it had affinities with Lurystheus 
