249 
The lower latera constitute a single, or an incipient double 
row at the base of the capitulum. They are present in a great 
number; in some specimens even more than 60 were counted. Their 
shape is fingerlike, upwards, and inwards curved, with external, 
distinet, transverse lines of growth. 
The peduncle exhibits a curious, almost velveteen appearance, 
owing to the crowded, calcified, cuticular, papillæ which cover the 
entire surface; each spine is comparatively long and siender. 
Dimensions of the specimens in mm: 
Plimmerton Slipper Island 
_—-- -- V 
I 
II 
III 
IV 
V 
VI 
Capitulum < 
( length 
8 
6,5 
4,5 
10,5 
10 
7 
1 
\ width 
8 
7 
4,5 
11,6 
9,5 
7,5 
Peduncle, 
length 
7* 
9,6 
3 * 
12 
9* 
8 
* Lower end of the peduncle damaged. 
The dissection of the Plimmerton specimen II gave the fol- 
lowing results as to the animal itself: 
The cirri are rather short and stout. Cirrus I is only by a 
small space separated from the next cirrus; its rami are of equal 
length, buth they differ in number of segments, the anterior hav¬ 
ing 10, the posterior ramus 11 segments. The segments of cirrus I 
are only a little more swollen than in the other cirri. Cirrus II 
to VI are only a little more siender and large; their rami are of 
equal length, but in each cirrus the number of segments in the 
rami differ by one: in all cirri the anterior ramus has 12, the 
posterior 13 segments. The arrangement of the spines in each seg¬ 
ment is almost the same as in Calantica. 
Filamentary appendages are absent. 
The eau dal appendages are short, and broad (in fig. 13 g the 
appendage is seen from the narrow side); on the distal end they 
have some few, strong, and rather short hairs. 
The penis is very short, only as long as the protopodite of 
cirrus VI. A few scanty hairs, arranged in pairs, are present in 
the outer part, but no tuft is seen at the distal end. 
The labrum is not very bullate; its interior edge has an open 
row of very fine denticles. 
The mandible has three larger teeth, and between the two 
