186 “TERRA NOVA” EXPEDITION. 
21. Conchoecia stigmatica, Muller. 
Conchoecia stigmatica, Muller, 1906a, p. 88, pi. XXX, figs. 22-28 ; id. 1912, p. 78. 
Conchoecia curta (Lubbock) (part.), Fowler, 1909, p. 231, pi. XVII, figs. 30-34, 43-47. 
Stations 50, 64, 65, 67, 68 (Atlantic). Surface. Stations 87, 106 (North of 
New Zealand). Surface to thirty metres. 
This species is now recorded from the Pacific for the first time. 
22. Conchoecia subarcuata, Claus. 
Conchoecia subarcuata, Claus, 1890, p. 9 ; id. 1891, p. 58, pi. Ill, figs. 3-9, pi. IV, figs. 1-8 ; 
Mfiller, 1906a, p. 102, pi. XXI, figs. 10-16, 19 ; id. 1912, p. S3. 
Conchoecia striata (part.), Claus, 1890, p. 12 ; id. .1891, p. 62, pi. VIII, figs. 1-6. 
Station 87 (North of New Zealand). Thirty metres. 
A small number of specimens in different stages of development seem to he 
referable to this species. Only one adult, a female (1 '96 mm.), agreeing exactly with 
Claus’s figures and description, was seen. The remainder represent three larval stages. 
23. Euconclioecia chierchiae, Muller. 
Euconehoeeia chierchiae, Mfiller, 1890, p. 277, pi. XXVIII, figs. 1-10; id. 1906a, p. 128, 
pi. XXXII, figs. 8-17 ; id. 1912, p. 96. 
Stations 39, 40 (Atlantic). Two metres. 
Swarms of this species occurred in these two hauls. Many of the females were 
carrying developing ova between the valves of their shells. The body of the female 
is relatively small compared to the size of the shell, which can therefore accommodate a 
number of eggs. In one case as many as twelve large eggs were counted. 
VI.—DISTRIBUTION. 
The methods adopted in collecting the material were not such as to furnish precise 
data of the bathymetrical distribution of the several species. It may be of value, 
however, to record that, of the species discussed in this report, the great majority were 
taken in nets that had not descended to a depth greater than thirty metres. Ph Homed es 
assimilis, Conchoecia antipoda, C. edentata, and ('. imbricata were only captured by 
nets that fished from a greater depth. It may also be of significance that C. antipoda 
was not found in any haul from less than four hundred and fifty metres, and C. edentata 
only in a net hauled from one thousand metres to the surface. 
Ostracoda were collected in three areas :— 
1. Atlantic Ocean, collected on Outward and Homeward Voyages. 
2. South Pacific Ocean (New Zealand). 
3. Antarctic ()cean. 
The greatest number of species is from the Pacific Ocean. 
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