1897 - 98 .] Prof. D’Arcy W. Thompson on Marine Faunas. 327 
fathoms off Kerguelen and from 2050 fathoms in the middle of 
the North Pacific. The describer says ( Chall . Rep., Isopoda, p. 
122), “I find it impossible to distinguish this individual (from the 
North Pacific) from those dredged at Kerguelen by any very dis- 
tinctly marked characters ; at the same time the condition of the 
specimen does not enable me to speak with great certainty, which 
is all the more to be regretted, as the occurrence of the same 
species in very deep and in shallow water is a rare occurrence.” 
Neotanais americanus, F. E. B. — A small species, of which one 
specimen came from 1900 fathoms off the Kiver Plate, and another 
from 1240 fathoms south-east of New York. Beddard states that 
the latter “presents certain slight differences having reference to 
the proportionate length of the thoracic segments. Seeing, how- 
ever, that the two specimens come from widely distant localities, 
it appears to be unnecessary to found a specific distinction between 
the two individuals at least for the present.” 
Fury cope fragilis , F. E. B.— To this species are referred several 
specimens from very deep water off Marion Island and other 
stations still farther south in the Southern Ocean, and one of 
much larger size, from 1875 fathoms, off Yokohama. Other 
species are known from the Korth and Middle Atlantic, from New 
Guinea, New Zealand, and the Southern Ocean, while Hansen has 
recently described [Harvard Bull., 1897, p. 100) a species, K. 
puldira, from near the Galapagos, which he says is closely allied to 
E. fragilis , Beddard. Sars has added a species from the Medi- 
terranean to the nine others that are as yet only known from the 
Scandinavian coasts. 
Lophogaster typicus, M. Sars. — This remarkable northern species 
was twice taken by the “Challenger” close to the Cape of Good 
Hope. 
Boreomysis scyphops , Sars. — This species, known also from the 
Arctic Sea to the north of Norway, is recorded, on the indisputable 
authority of Sars, from great depths in three localities in the 
Southern Ocean {Chall. Rep., Schizopoda, p. 182). Another 
species, B. arctica, is very closely allied to one from the Gulf of 
California, described by Ortmann as B. californica (. Harvard 
Bull., xxv. p. 106, 1894). Other species occur in the deep water 
of the North Atlantic and North Pacific. 
