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peduncle is somewhat excavated by a broad furrow from the capi- 
tulum to the base. 
Size: the larger of the specimens attain a total length of 2,5 
mm wih a capitulum of 1,5 mm. 
The mouth feet in their general features agree with the 
Scalpellum- type. They are only scantily adorned with hairs. 
The man dible has three strong teeth separated by almost 
equally great excavations; the lower angle is pointed, almost tooth- 
shaped, with a strongly pectinate upper edge. 
The maxilla has two large, and one or two smaller spines 
at its upper side; below these spines there is a shallow but well 
defined excavation; the lower half of the cutting edge is armed 
with 6 or 8 strong spines. 
The cirrus I is placed beside the mouth, and separated from 
the next cirrus by a small interval; it is only slightly stouter than 
the other cirri, and has subequal rami. The anterior ramus has 
5, the posterior 6 segments. Cirrus II to VI are rather short, 
siender, and only little curved. Their rami have 8 to 10 segments. 
Caudal appendages are absent. 
The penis is short, not reaching half the length of the cirrus 
VI. It has some few, small hairs here and there, and a strong 
tuft of hairs at the distal end. 
More than thirty specimens of this curious little barnacle were 
brought home by Dr. Mortensen from the Philippines, all of 
them fixed to one hydroid colony (a Grammaria sp.). I was at first 
inclined to look upon them as young specimens of some species 
or other of the Scalpellidae, only in this case they would be 
curiously discordant with all stages of development in the group 
hitherto known. A doser study revealed the astonishing faet that 
all larger specimens in their mantie cavity had eggs in different 
stages of development; the specimens have only 15 to 25 eggs 
developing at a time. This proves that the animals are outgrown, 
and we are obliged to consider them as representatives of a new 
species, which is so aberrant that at present we must even place 
it in a genus of its own, no other species being known which can 
be said to be nearly related to this one. 
Among the specimens also some few quite young ones are 
