Nicholls — Two New Phycaloicid.s. 
187 
Tn the' iiialo, tlie tlirct* suecoediii^' jx'racopod.s liavt> apparently 
developed a prehensile conditioip though in varying degrees. In the 
second thoracic a])])endage the propod lins a suh-i-('ctaiigular outline, 
the anterior border being very slightly convex, the jjosterior with a 
small distal concavity furnished vith setae. Proxiinally a couple of 
stout spines vould meet the tip of the down-folded dactyl. This 
joint is stout and curved, its proximal (‘iid set in a groove between 
distally produced extensions of the pro])od. The propod of the third 
appendage is rather stouter, more convex anteriorly, its posterior 
border more concave and ])earing two pairs of ])roximal]y situated 
spines to receive the dactyl, with bettei* develo})ed guides for the 
])ase of the dactyl. The fourth peraeopod has a very stout ])ropod, 
convex along both borders, greatly ])roduced distally on either side 
of the dactyl, thus liiding much of the base of this joint, which 
appears short and is strongly curved. The tij) of the dactyl has but 
a very reduced secondary unguis and is received between a pair 
of powerful spines on th(' ])ropod. Tn all tlua'e of these appendages 
the anterior border of the })asos is beset with setae, the ]rosterior 
border of the entire limb l)eing strongly setose. 
The three legs of the jsosterior grou]) are, also, markedly setose; 
the basos, narrow at its origin, shows an expansion which is little 
marked in the foremost, more ijronounced in the posterior, limbs; 
the hinder margin of the joint being furnished with moderately long 
setae; the large ischios ex])anded about the middle of its length 
rather than distally; the meros widened distally; the two succeeding 
joints sul)-rectangular, the propod being long and slender. The 
dactyl has a small secondary unguis which is flanked by a stout 
spine and a more slender seta. The coxal joints (ei)imera) of these 
thoracic limbs seem to resemble clos(dy those of P. ((ustralis (Chilton, 
1891, PI. 23, tig. 1). 
The ])aired male appendage (Ph XXVI, tig. 13) on the last 
thoracic segment ap])ears to (Uffer from the organ as descriliod and 
figured ill P. ansiraUs in the jiossession of a number of setae regularly 
disposed along its mesial border. Such a condition is hguied, hoA\- 
ever, for P. capensis. 
Fleopods (PI. XXVI, tigs. 14-16). The branchial appendages 
likowist! differ somewluit fi-oiu tliese Ktnu-tures in oilier speeies of 
Phreatoieus. In tlie first pair (PI. XXVT, fiK- I'i) the number (13- 
14) of plumose setae is ratlier fjreater tlian in P. australis. The 
endopodites of the seeond (PI. XXVI, fig. U) are relatively longer, 
reaching to the end of the proximal .ioint of tlie exopodite and are 
scarcely exceeded by tlie slightly curved penial filament, which bears 
.a terminal tuft of four or five stiff setae. The distal lobe of thei exo- 
]) 0 dite is fringed witli about twenty plumose setae, while internal to 
its base, on the proximal lobe are eiglit plumose setae. Externally 
