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pl. LI, fig. 6, show only two of these bristles. These bristles vary both with regard to length
and equipment; differences may be observed, not only between one individual and another,
but also between the right and left antennae of the same individual. Sometimes it is the distal
one, sometimes the proximal one and sometimes the middle one that is longest; sometimes one
or two of them have an irregulär wreath of long, sti ff secondary bristles at the middle and short
hairs distally, while the two or one that remain have short hairs; sometimes all three have
only short hairs. The distal bristle of this joint is about as long as the joint or somewhat
longer; it is finely rounded distally. On one antenna of one individual there was observed,
proximally on this bristle, a protubérance of about the same type as G. W. Müller observed
on Ph. levis (1894, pl. 3, lig. 31).
M a n d i b 1 e (fig. 11): — This is very like that of Ph. ( Ph.) globosa. Protopodite:
The basale has eight or nine bristles ventrally, of about the same length as in the species just
mentioned. Dorsally this joint has, besides the two distal bristles, five (sometimes four) bristles
on the distal half. As in Ph. ( Ph.) globosa the shorter distal bristle is about as long as the
anterior side of the first endopodite joint, the longer one is about twice as long. The remaining
five are subequal and about as long as the shorter distal bristle. In most cases ail these bristles
of this joint have a wreath of long, stiff secondary bristles at the middle and exceedingly fine
hairs distally; sometimes, however, there may be no wreath on some of them.
Endopodite: The second joint differs from Ph. (Ph.) globosa by having five, sometimes even six,
bristles in the anterior-proximal group.
Maxilla: — This is very like that of Ph. (Ph.) globosa. We may note:
Proto-p od i te: On the boundary between the protopodite and the endopodite there are on the
anterior edge of the palp two bristles with short hairs, usually subequal and varving somewhat
in length, sometimes only about half as long as the first endopodite joint, sometimes about as
long as the corresponding bristle in Ph. (Ph.) globosa. On one specimen three of these
bristles were observed in this place on one maxilla. Exopodite: The equipment
of the three bristles is rather variable; the short bristle often seems to be without
long secondary bristles. Endopodite: End joint: This has usually, as in Ph. (Ph.)
globosa, four, sometimes five, a-bristles; on one specimen three b-bristles were observed,
two of which were powerful; four or five, usually four c-bristles; the three d-bristles are
sometimes subequal, in most cases, however, the relation between their lengths is the same
as in Ph. (Ph.) globosa.
Fifth limb: — This is quite like this appendage in Ph. (Ph.) globosa.
S i X t h lim b: — This is very like that of Ph. (Ph.) globosa; we may note that the
second joint of the exopodite has 28—33 bristles.
S e v e n t h li m b (fig. 13): — This has about the same relative length as the
corresponding appendage in Ph. ( Ph.) globosa. The dean ing bristles are relatively few, usually ten,
sometimes eleven, of moderate, somewhat varving length. Usually six of these are situated
dorsally, three close togetlier distally and three scattered somewhat proximally of the former.
Four, sometimes five. are situated ventrally, two close together distally and two or three somewhat
proximally of the former. Equipment of the cleaning bristles: Three to six belis cut off transversally
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