ENTOMOSTRACA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 523 
two joints. These differences become more apparent when arranged in tabular form, 
thus :— 
Inner Ramus of 
Name of the Genus. 
| 
Ist pair. 2nd pair. 3rd pair. | 4th pair. 
Cervinia . : : . | 3-jointed 2-jointed 2-jointed | 2-jointed 
Cerviniopsis . : : Oa) Bigs 3-5; B= 55 ost a es 
Zosime . : : : Ms? oe =) 55 3200s Be) 5s 
Pseudozosime . : : Ye Toe Des DS io pe Tp 
The small Harpactid, for which it has been necessary to institute the new generic 
name, Pseudozosime, was obtained by washing some material dredged in Scotia Bay, 
South Orkneys, in June 1903. Only one specimen—a female—was observed; it so 
closely resembled Zosime, Boeck, that only after careful dissection could the differences 
referred to be detected. 
In this account of the Copepoda from the Scotia collections, the general arrangement 
followed is that outlined by G. O. Sars in his Crustacea of Norway, vol. iv. p. 2. He 
divides the Copepoda into seven sub-orders or tribes, viz. the Calanoida, Harpacticoida, 
Cyclopoida, Notodelphyoida, Monstrilloida, Caligoida, and the Lernzoida. The first 
three contain all the Copepoda recorded here except Dysgamus atlanticus, which belongs 
to the Caligoida. Dr G. S. Brapy’s Report on the Challenger Ostracoda and other 
papers on these organisms have been of much assistance in dealing with this group. 
As several of the species recorded here, particularly among the Harpacticoida, appear 
to be undescribed, drawings of these have been prepared to show their distinguishing 
features, and to illustrate the descriptive notes relating to them. A few other more or 
less rare and interesting forms are also figured to show peculiarities of structure and 
some of the characteristics by which they may be determined from others closely allied 
to them. My son, AnpReEw Scort, A.L.S., has prepared a number of these drawings, 
and [ desire to express my indebtedness to him for these, as well as for assistance 
in determining some of the more critical and troublesome species. 
I have also to express my thanks to the Executive Committee of the Carnegie Trust 
for the Universities of Scotland for defraying the expenses of the plates. 
I have not considered it necessary to give a list of the authors whose works have 
been consulted, but reference to the more important of them will be found throughout 
the systematic part of the Report. 
