5980 DR THOMAS SCOTT ON THE 
following stations: 25, 31, 44, 79, 82, 88, and 98. The first two stations are north of 
the equator, viz., 15° 15° N 252709" W., and 11-10: N., 25°20’ W. ‘The other stations 
are south of the equator, Station 98 being in 34° 02’8., 49°07’ W. The Scotva specimens 
differ somewhat from the drawings given by Steenstrup & LUTKEN in the work referred 
to, in having the abdominal portion rather stouter and shorter, but they agree so well 
otherwise that I have little hesitation in ascribing them to their species. CHARLES BRANCH 
Wizsoy, in his work on “ American Copepoda parasitic on Fishes,” * describes a Dysgamus, 
of which he obtained a single specimen, and his drawings show it to be not unlike the 
specimens collected by the Scotia; this Dysgamus he ascribes to a new species, 
Dysgamus arvommus, and speaks of the fifth legs as being entirely lacking, whereas in 
the Scotia specimens the fifth pair, as already stated, are, though small, quite distinct. 
Only one, or at most two, specimens were obtained in any single gathering, and 
males only were observed, and, like the Caligus ropax frequently found in tow-net 
collections in British waters, they were captured apparently as -free-swimming 
organisms. 
The only other writer who records Dysgamus is Dr Basserr-Smirx in his work “A 
Systematic Description of Parasitic Copepoda found on Fishes,” published in Proc. Zool. 
Soc. London, 18th April 1889. 
CLADOCERA AND OSTRACODA. 
Cladocera were very scarce in the Scotea collections. The few specimens observed 
belong to the genus Hvadne, two species of which are represented in the collection, 
viz. :— 
Genus Evadne, Lovén, 1836. 
Evadne tergestina, Claus. (PI. XIIL fig. 14.) 
This species occurred in a tow-net gathering collected at Station 85, 23° 8’ S., 
39° 40’ W. Only one or two specimens were noticed. 
Evadne spinifera, P. E. Miiller. (PI. XIII. fig. 15.) 
E. spinfera was also obtained in the gathering from Station 85, 23° 8’ S., 
39° 40’ W, and was equally scarce with the species previously mentioned. 
OSTRACODA. 
The Ostracoda observed in the Scotia collections belong chiefly to the two groups 
Podocopa and Myodocopa, and include representatives of the families Cypride, 
Cytheridz, Cypridinide, and Concheeciade. 
* “North American Parasitic Copepods belonging to the Family Caligide: Part II. The Trebine and 
Kuryphorine,” Proc. U.S.A. National Museum, vol. xxxi. p. 713, pl. xx. figs. 62-70. : 
