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they are situated. This joint has not the distal-posterior cutting edge that is characteristic
of most genera of the sub-family Cypriilininae. The little end joint is moderatelv strongly
chitinized and is fumished with a rather large number of bristles (see fig. 14 of Ph.
( Ph.) globosa). \\ ith regard to these bristles the species investigated by me showed onlv slight
variation. One gsoup, consisting of three to five bristles in the species investigated by me,
forms a transverse row somewhat posteriorly on the outside of the joint; these bristles are of
moderate length and strength and decrease somewhat in length the more anteriori y thev are
situated. The other bristles are situated more or less distinctly along the distal edge of the joint
and are rather different in length and strength. One group of these is situated distally inside
the other bristles; on the species investigated by me this group, like the former one, numbers
from three to five bristles; these are comparatively weak, the posterior ones are moderately long,
the anterior ones in most cases rather considerably shorter. Besides these bristles I observed
on the species investigated by me five more bristles (onlv on one specimen of Ph. (Ph.) Lilljeborgi
were six observed on the maxilla of one side). The three middle ones of these are very powerful
and of moderate length, the anterior one being somewhat shorter than the two others, and weakly
curved. The bristle that is situated in front of these three is somewhat weaker and in most cases
somewhat shorter than the anterior of them and is moderately strongly pectinated. The bristle
situated behind these three is in most cases somewhat shorter than the posterior one of them,
of moderate strength and moderately strongly pectinated. Pilosity: The first endopodite joint
has along its anterior side rather numerous transverse rows of short fine hairs. (The
endopodite and the exopodite are so similar in appearance within this genus that it did
not seem necessary to me to reproduce them for more than one species: Ph. (Sei.) Appellöf i;
the end joint is also reproduced for Ph. (Ph.) globosa.)
Male: — This is of the same fundamental type as that of the female, but it seems
certain, however, that it cannot be used as a masticatory organ. It is somewhat smaller than
that of the female, and is only weakly jointed; its muscular system is almost completely reduced
and all its chitinous parts are soft, thin and hyaline. The bristles seem to be the same or almost
the same as on the female maxilla; the bristles that have long secondary bristles in the female
maxilla are in the males provided with abundant long, soft hairs along the greater part of their
length; similar hairs seem, however, to occur, though more sparsely, also on bristles that have
short hairs in the female; distal secondary teeth are quite absent from the bristles. Pilosity:
The hairs on the first endopodite joint are more abundantly developed; on the protopodite
there is a „Hautsaum“ with hairs similar to that fourni on the female maxilla.
Fi ft h limb:* — This has marked sexual dimorphism.
Female: — All the species investigated by me showed a verv close agreement with
regard to this limb. (Because of this I did not think it necessary to reproduce it for more than
one species: Ph. (Sel.) Appellöfi; a detailed description is given under the first species, Ph.
(Ph.) globosa.) Protopodite: In the species investigated by me the first endite constantly
has six bristles, of which the four middle ones are situated in a row, the anterior one and the
* In the descriptions this limb is always. for practical reasons, thought ofas poinling straight outwards. whcrcas
in the natural position of rest it points oblitjuely outwards and barkwards.
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