Bd. VI: 4) 
THE ECHINOIDEA. 
17 
by me. — The small globiferous pedicellariæ occur in two main forms: one short 
(Ingolf Ech. I. PI. VIII Fig. 6), the other elongate, narrow (PI. XIV Figs. 16 — 17), 
somewhat recalling tridentate pedicellariæ; probably it is this form which has been 
figured by DÖDERLEIN in his »Japanischen Seeigel» Taf. IX Fig. 6 e and m, and 
probably also the figure k represents such an elongate globiferous pedicellaria, since 
tridentate pedicellariæ have otherwise not been met with in canaliculata , either by 
CLARK or by myself. The two forms of the small globiferous pedicellariæ are con- 
nected by all transitions, and upon the whole they vary considerably. — In the 
young ones only small globiferous pedicellariæ are found; they are, from their first 
appearance in the embryos, mainly of the same shape as in the grown specimens. 
The spicules of the tube-feet are of the usual form and, as usual, arranged so 
as to leave a bare space for the tentacle-nerve. The lower tube-feet have a com- 
paratively large sucking disc, with four rosette plates; in the abactinal tube-feet the 
sucking disc is not developed, and the spicules are few and small; in the tube-feet 
on the peristome the disc is small and irregular, and the spicules near the disc 
generally developed into larger, irregular plates. — The walls of the intestine, the 
genital organs and the organs of Stewart contain no spicules. The latter organs are 
small and inconspicuous; the genital organs are also small, with only comparatively 
few, but rather large eggs. (The size of the eggs cannot be given, since the exa- 
mined specimens contained only unripe eggs.) 
The large primary tentacles of the embryos contain no spicules, only a small 
ring in the point. 
The auricles (PI. XIV Fig. 2) are divergent, otherwise not peculiar. Ambulacral 
prominences distinct. 
The colour is recorded by AGASSIZ (Rev. of Ech.) to be of a brilliant orange. 
The specimens preserved in alcohol show only a reddish tint at the base of the 
radioles, otherwise they are straw-coloured. 
The viviparous habit of the species (carrying its eggs and young on the apical 
area, contrary to E. nutrix which carries them on the peristome) is well known and 
need not be further mentioned. None of the specimens in hand carry young ones. 
The species was taken by the Swedish South Polar Expedition at the following 
localities: 
St. 43. Falkland Islands (51 0 33' Lat. S. 58° 9' Fong. W. Port Louis). Low water; 
stony bottom with algæ. Several small specimens. 
» 52. — — (51° 40' Lat. S. 57° 44' Long. W. 17 m. Port William). 
2 small specimens. 
» 53. — — (5i°40' Lat. S. 57° 44' Long. W. 12 m. Port William. 
Sand and gravel). 2 specimens. 
3 — 100133. Schwedische Südpolar-Expediticn igoi — içoj. 
