190 The N.Z. Journal of Science and Technology. [May 
as the Antarctic shrimp certainly comes nearer to species of Crangon in 
northern seas than to other allied species in the south. Borradaile’s con¬ 
clusion is as follows : “ The best solution of the problem of expressing its 
affinities in the terms of systematic zoology is that of Coutiere, who has 
proposed to institute for it a new subgenus, Notocrangon. The facts suggest 
that the common ancestor of Crangon gave rise on the one hand to Crangon 
s. str., and on the other to a stock from which Notocrangon has departed 
less far than Sclerocrangon. On the face of it, this theory lends some 
support to the hypothesis of bipolarity, though that is, of course, not its 
only possible explanation.” 
Crustacea : Part II— Porcellanopagurus, an Instance of Carcinization. 
Zool., vol. 3, No. 3, pp. 111-26. 
A full account is given of the characters of the genus Porcellanopagurus, 
a peculiar genus of hermit-crab of which only four species are known, 
a specimen of the type species P. edwardsi Filhol having been taken by 
the “ Terra Nova ” off the northern end of New Zealand. Though by origin 
a hermit-crab, Porcellanopagurus has, in habits, appearance, and structure, 
become crab-like, and in the paper a full discussion is given of the means 
by which this has been brought about, and a comparison of the similar 
process in parallel lines of development. 
Crustacea : Part III— Cirripedia, by L. A. Borradaile. Zool., vol. 3, 
No. 4, pp. 127-36. 
The “ Terra Nova ” brought back only fourteen species of barnacles. 
Of these, five are described as new, though in the case of four of these lack 
of knowledge leaves room for doubt. Seven of the species are from the 
neighbourhood of New Zealand; and another, taken from the hull of the 
“ Terra Nova ” when the ship was in Lyttelton Harbour before leaving for 
the Antarctic, is described as a new species, Lepas ajfinis. The same form 
had previously been described by Jennings as a new variety of Lepas anati- 
fera Linnaeus {Trans. N.Z. Inst., vol. 47, p. 288). 
The most interesting species is Hexelasma antarcticum sp. nov., described 
from valves of a large balanid barnacle “ in glacier 30 ft. above sea-level,” 
at Evans Cove, Terra Nova Bay, Victoria Land. The longest valve would 
measure if complete nearly 90 mm. From the appearance of the valves it 
is not possible to decide whether they are Recent or fossil, and yet the nearest 
known relative of the species is H. aucklandicum Hector, from the Miocene 
of New Zealand. No Tertiary rocks are known from the neighbourhood 
of the glacier in which the valves were found, though it is possible that in 
its course the glacier is in contact with Tertiary rocks. Decision on the 
question and on the bearing of the facts upon the history of the Antarctic 
Continent is left to the geologists. 
Crustacea : Part IV — Stomatopoda, Cumacea, Phyllocarida, and 
Cladocera, by W. T. Caiman. Zool., vol. 3, No. 5, pp. 137-62. 
Only a few species of these groups were obtained, and none presents 
general points of interest except Nehalia longicornis G. M. Thomson, the 
only representative of the Phyllocarida. This species is widely distributed 
in southern seas, and is closely allied to the northern N. bipes. Thiele, 
who considered it distinct, distinguished a number of subspecies. The 
“ Terra Nova ” obtained three specimens: one, from the entrance to McMurdo 
Sound, agrees in character with the subspecies magellanica; the other two, 
from the north of New Zealand, show some of the characters that are sup¬ 
posed to distinguish N. longicornis from N. bipes, but agree with the latter 
