CUMACEA—CALM AN. 
145 
it. In stating that the adult is known only by the unique type-specimen, however, 
Kemp (1913, p. 130) lias overlooked Hansen’s additional records (1895, p. 83). 
11. Odontoclactylus, sp. [ Odonterichthus , sp.]. 
Occurrence. —Station 49. South Atlantic, oh’Brazilian coast. Surface-plankton. 
Two specimens. my.i.i.ty-sir 
Remarks .—The specimens, which measure about 14 mm. in total length, resemble 
a larva of 28 mm. length from the Canaries, figured by Claus (1872, p. 139, pi. v, 
fig. 21a), but differ from it in having a short “ zoea-spine ’ on the hinder margin of 
the carapace, and in the very much shorter lateral and intermediate teeth of the telson. 
This larva, regarded by Claus as belonging to the genus Gonodactylus, is stated by 
Hansen (1895, p. 90) to be an Odonterichthus (larva of Odontodactylus). Somewhat 
similar larvae (possessing a zoea-spine) are figured by Brooks (1880, pi. xv, figs. 1, 5, 
11) from Celebes and the West Pacific. 
CUMACEA. 
I.—INTRODUCTION. 
The Cumaeea brought back by the “Terra Nova Expedition are few in number. 
From the Antarctic region only two species were procured, each represented by a 
solitary specimen. A considerable number of specimens belonging to nine species (two 
of which are described as new) were obtained in three plankton-gatherings from Spirits 
Bay in the extreme north of New Zealand. In the remainder of the collections no 
Cumaeea have been detected. 
A comparison with the results obtained by the Herman and the Swedish Antarctic 
expeditions might suggest that the Ross Sea area was relatively poor in species of 
Cumaeea. It is probable, however, that the deficiency is more apparent than real, and 
is due to the fact that the two British expeditions to that area devoted less attention 
than the others to the special methods of collecting necessary for obtaining the more 
minute bottom-living Crustacea. 
Of the Antarctic species, Campylaspis cintarctica was obtained by the “Discovery” 
in the same region (McMurdo Sound), and by the “ Gauss ” at Wilhelm Land, while 
Cyclaspis gigas, described from the last-named locality, is now found to have a 
similarly extended range. 
All the species from Spirits Bay (with the exception of a species of Campy lay) is 
left for the present undetermined) are either identified with, or described as closely 
allied to, species already known only from New Zealand. It is worthy of note that 
the three plankton-gatherings in which they occurred were taken during the night, 
since it has already been observed that Cumaeea commonly choose the hours of 
darkness for their excursions from the sea-bottom. 
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