188 
Nicholas — Two New Phrcatoicids. 
tlio j)i-oxi]iial lol)t‘ is Itesot -\vitli \(m^ setae, of -wliieli only a few (12) 
of tl]e more distal are jduinose. 
Upon the llatteiied faee of this proximal lobe there is in one 
speeimen a sligbt ridge, set with setae running obliquely inwards from 
tlie lateral border. It has tlie position of the ventro-inesial border 
of the epi])odite of sueceeding jdeopods and might eonceivably 
iiidieate the fusion of an cpipodite with that plate. The basal joint 
(proto])odite ) has stiff plumed setae on its mesial border only, 
whereas the basal joint of the first ])leopod has numerous setae both 
mesially and externally. Upon pleo])oda 8-5, the epipodites are 
free and of relatively large size; tlie eiidopodites are long, extend- 
ing to the base of the distal exojxidite segment; the basal joint 
(protopodite ) with a mesial lobe set with long setae. TJjion the 
proximal exo])odite joint of the third pleo])od the numlier of jilumose 
setae is increased to aliout 25. In life the pleopods are visible, 
their distal ends coming w(dl iudow the inferior margin of the pleura 
of the ])leon segments.* The ventral margin of the pleon segments 
1-5 are fringed with hmg llexible setae which scarcely extend onto 
the ]K)sterior Imi-ders. Uium the sixth segment (PI. XXIX, fig. 42) 
these seta are representeil l)v serrations or short pectinate spines 
which give ]dace ]Kisteriorly to a f(‘w (3-4) stout spiniform setae. 
The ])leura of the latter segment slightly overlap the telson externally 
and are fused with it. Tlu' line of suture is quite distinctly raised 
and gives origin to but three delicate setae. 
The uropods (PI. XXV, tig. 1, and PI. XXIX, figs. 42, 43) are 
well developed, a stout jieduncle projecting backward to the level of 
Ihe end of the telson. Ventrally there are two tufts of three setae, 
dorsally thia'e or four almost equi-distant spines upon the outer 
border (fig. 43) ; tAvo stouten- s])iiies upon the inner margin at its 
distal end (fig. 42). 
At the extremity of the ]>eduncle one or tAvo spines are laterally 
])laced, Avhile A’cntrally are three s])iues — the innermost sini])le (fig. 
42a), the middle very stout, Avith terminal ])ectination dorsally, and 
the outermost, smaller but also Avith terminal pectination (Pigs. 43, 
43a). 
The rami are of nearly equal length, the outer slightly the 
shorter; each bears an apical spine and tAvo or three setae, but the 
Avhole ap])endag(' is distinctly less setose than is usual in this genus. 
•■'■This is the case Avith all of the s])eeies of Phreatoicus that I hav(3 
been able t») examine in the living condition. In many preseiwed 
»])ecimens also, the i)leo])ods may be seen hanging doAviiAA’arda and 
then quite ob'vious. 
