186 "TERRA NOVA" EXPEDITION. 



21. Cojichoecia stigmatica, Miiller. 



Conchoecia stigmatica, MuUer, 1906a, p. 88, -pi. XXX, figs. 22-28 ; id. 1912, p. 78. 

 Conchoecia curta (Luhbock) (part.), Fowler, 1909, p. 231, pi. XVII, figs. 30-34, 43-47. 



Stations 50, 64, 65, Q7 , 68 (Atlautic). 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 suharcuata, Glaus. 



Conchoecia suharcuata, Glaus, 1890, p. 9 ; id. 1891, p. 58, pi. Ill, figs. 3-9, pi. IV, figs. 1-S ; 



Miiller, 1906«, p. 102, pi. XXI, figs. 10-16, 19 ; id. 1912, p. 83. 

 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 difterent stages of development seem to be 

 referable to this species. Only one adult, a female (l'96 mm.), agreeing exactly with 

 Claus's figures and description, was seen. The remainder represent three larval stages. 



23. Euconchoecia chierddae, Miiller. 



Euconchoecia chierehiae, Miiller, 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 tlie 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. Philomedes 

 ^assimilis, Conchoecia antipoda, C. edentata, and C. inibricata wei-e 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 Ocean. 



The greatest number of species is from the Pacific Ocean. 



