6 Embrik Strand: 
großer Wichtigkeit. — Von den 189 behandelten Arten sind 129 
neu, von den 51 Gattungen sind 12 neu: 
Pectinura, Ophiarachnella, Ophioconis 2, Ophioplocus, Ophio- 
zona 3, Ophiura 17, Anthophiura n. g., Ophiotrochus, Ophiocten 3, 
Ophiopenia 2, Ophiomusium 2, Ophiopholis 2, Ophiactis 5, Amphrura 
9, Amphiodia 8, Amphioplus 4, Amphilepis, Amphilimna, Ophio- 
nereis, Ophiocrasis n. g., Ophiodoris, Ophiomitra 8, Ophiocamax 2, 
Ophiocantha 24, Ophiolebes 7, Ophiophrura n. g., Ohiologimus n. 8., 
Ophiostyracium n. g., Ophioschıza n. g., Ophiothrix 4, Ophiobyrsa 2, 
Ophiomyxa, Ophiophrixus n. g., Ophiocynodus n. g., Ophiosyzygus 
n. g., Ophiohymen n. g., Ophioleptoplax n. g., Asteroporpa, Astro- 
chele, Euryale. — Ophiurases n. g. pro Ophioceramis obstricta. 
Pag. 7—23 behandeln die Verbreitung der nordpazifischen 
Ophiuren und Verf. kommt dabei zu folgenden Resultaten: 
„1. Four distinct faunas combine to make up the North Pacific 
group of species and these are designated as the Honshu, 
Bering, Oceanic and American. Of these the Honshu is the 
largest and most diversified, while the Oceanic is the most 
widely distributed. 
2. Six species, well known from the North Atlantic and the seas 
North of Europe, confirm the belief in circumpolar fauna. 
3. The line of division, on the Asiatic coast, between the Bering 
and Honshu faunas, is..... at about the thirty-sixth parallel 
ot Jatitudes... | ...% 
4. About four-fifths of the species are shallow-water forms, only 
fortyone being confined to water exceeding 300 fathoms in 
depth. There are only four genera represented, which can be 
considered as characteristic of deep water. 
5. The distribution of the deep-water species confirms the view, 
that species with a great bathymetrical range tend to become 
widely distributed. 
6. The bathymetrical range of the species in the Oceanic fauna 
confirms the view that species occurring on both sides of the 
North Pacific have a great bathymetrical range. 
7. Although only one-sixth of the species are deep-water forms 
and less than one third belong to the Bering and Oceanic 
faunas combined, nearly two-fifths of the species are distinctly 
cold-water forms, occurring only in water under 45° F. 
8. Two groups of species combine to form the Oceanic fauna: 
A, composed of hardy species, with great temperature ranges, 
. to whom the temperature of the water seems to be relatively 
unimportant, and B, composed of species to whem a uni- 
formly low temperature appears to be essential. 
9. There seems to be abundant evidence that very closely related 
species of Ophiurans, often the most closely related, inhabit 
the same area and that ‚, Jordan’s law‘ does not apply to this 
class of Echinoderms. 
