164. The Arctic Expedition. 
jection of the indigestible portion of its food is effected by dila- 
ting the whole body with water and then ejecting it. 
At the same time a small species of Clio, several Beroé, one 
specimen of a free Actinia, and a very beautiful Crustacean, form- 
ing a new genus in the family Pontza and allied to Jrenzus, were 
obtained. The last is characterized by its large size, “the enor- 
mous length of the four central tail-filaments; the inner of which 
are not themselves armed with filaments, all the others being so ; 
each of the antenne has a joint at the distal part of the first third, 
thus enabling the animal to bend them and conceal them under 
its body.” 
On the second fine day a most interesting Ciliograde was ob- 
tained of very peculiar form, and having the ciliated ribs trans- 
verse instead of longitudinal ; the cilia arising from either edge 
of the nbs. Mr. Goodsir thinks that its minute structure, which 
is very complicated, proves its affinity to the Diphyde and also 
the Salpe. All the Meduse obtamed on these two days were 
Ciliogrades. 
On the 23rd of June, having rounded Cape Farewell in a 
heavy gale of wind on the preceding day, on entering Davis’ 
Straits numerous beautiful Pteropoda of the genus Clio were ob- 
tained in company with Spiratella. They were swimming ac- 
tively in the water and were adorned with the brightest colours ; 
only. approaching the surface of the sea on calm evenings. The 
observations made upon these animals have enabled Mr. Goodsir 
to confirm the observations of Eschscholtz in most points. 
On the 25th numerous Meduse were seen, all of these of the fa- 
mily Beroide and mostly of the species B. punctata of Eschscholtz. 
On the 27th soundings were obtained in 41 fathoms and a dredge 
put down, which produced, amongst many other interesting cap- 
tures, a new species of Caprella, Amphipoda im great number, 
several Asteriadea, a Terebratula and several other Mollusca, an 
Isopod forming a new genus allied to Munna, a very beautiful 
Ascidian, four species of fish—Cyclopterus, Liparis, Ammodytes, 
and a beautiful species new to the observer. On the same day a 
large shoal of the Caing whale (Phocena Melas) passed on their 
way towards the south. 
On the 28th a dredge was sunk to the enormous depth of 
300 fathoms, and produced many highly interesting species of 
Mollusca, Crustacea, Asteriade, Spatangi and Corallines ; such 
as Fusus, Turritella, Venus, Dentalium, &c.; and also some large 
forms of Isopoda. As bearing upon the geographical distribution 
of species, Mr. Goodsir considers the occurrence of Brissus lyrifer 
(Forbes) and Alauna rostrata (Goodsir) as of the greatest in- 
terest, both of them bemg natives of the Scottish seas. The 
yemarkable depth also appears to us to give peculiar interest to 
