Niciiolls — Two New Phreaioicids. 
195 
inatcly e(|ual to the first aiiteiiua), of five joints, of Avhieli tlie slender 
fifth is mueh the longest. In profile, the fia^(’llar johits are s<piarish, 
but a few of the more distal are (juite slender; each is iiuntmpletely 
encircled by setae. 
N'either upper nor lower lip calls for special comment. The 
left mandible (PI. XXIX, fig. 34) has an outer cutting edge of four 
teeth and an inner series of three; immediately ]iroximal to this 
latter is a curved spine row and beyond tliis the lower margin is 
setose. A well developed palp is present, the second Joint, much the 
largest, being both l)road and long. In the right ma)uiible (PL 
XXIX, fig. 35) tlie outer dentate row shows three teeth only, the inner 
edge seems to be divided into two teeth, both of which are curiously 
denticulate, the denticles in their turn pectinate. In the natural 
position, this inner edge underlies a s])inous row. In the figure, 
the molar tubercle is seen in profile and has two slender setae on its 
grinding face; biternal to its base are numerous setae. 
The fi^'st maxilla (PL XXVITT, fig. 29) is stout, the outer plate 
setose both laterally and mesially, and armed witli an apical tuft 
of 10 or 11 stout pectinate spines in tlie usual double row, some being 
pectinated on both edges. The inner ])late is strongly setose distally 
and upon its truncate apex bears seven terminal ])lumose setae, with 
one simple seta at its external end. Some of the plumose setae 
are of the type usual in Phreatoicus, but towards the mesial side 
some are apparently undei’going reduction, approaching a unilateral 
condition. 
The second maxilla (PL XXIX, fig. 3fi) is also stout; it shows 
the inner plate triangular and closely set with bent setae (distally 
directed), along the entire mesial length of one edge of its border, 
which is apfiarently flattened, from the other edge projecting a 
series of stiff, feebly ciliated setae. At the apex the two 
series meet and pass into a terminal tuft of curved, jilumed and 
pectinate setae (some plumose on one side of the axis and ])ectinate 
on the ojiposite). The pal]) aipiears to l:ave a well defined joint 
and the entire outer border of the a^ipendage is setose. 
Maxilliped (PL XXVTJI, figs. 27, 28). The epipodite is nearly 
round, with a few short setae inserted into its serrated outer margin, 
its mesial margin strongly setose. The second joint of the appen- 
dage bears two stout plumose setae and the mesial border of the 
inner plate is fringed with similar setae, which pass at the truncate 
apex into stiff curved setae. These are doubly, and then singly, 
pectinate, and at the external angle become more curved, passing 
by an easy transition into a series of five coufding hooks strongly 
