of the Fishery Board for Scotland. Bo eWE TL 
Bathyporeia and Ampelisca have been recorded, but the species were 
apparently not identified. 
Stenothoé marina has one or two records, but it appears to have been 
comparatively rare in the tow-net gatherings under consideration. 
Argissa hamatipes is occasionally recorded in the lists of tow-net 
invertebrates collected at the three outer stations, but less frequent in 
those collected at the inner stations. 
Metopa aldert appears to have been comparatively frequent at 
nearly all the stations. 
Perioculodes longimanus is recorded chiefly from the outer stations. 
Iphimedia obesa is only recorded once—in 1892 for Station V. in 
January. 
Apherusa (two species) and Paratylus are referred to several times in 
the lists of tow-net invertebrates; neither of them appears to be rare, 
though less common than some of the others. 
Melphidippella macera is only once recorded—viz., at Station VIII. in 
March 1892. 
Amathilla homari is also recorded once—viz., for Station IV. in 
December 1892. 
Gammaropsis erythrophthalmus is recorded once—for Station V. in 
December 1890. 
- Dulichia sp. and Pariambus typicus are both rarely mentioned among 
the lists of tow-net gatherings. 
(f) CLADOCERA. 
Fvadne nordmanni is recorded from nearly all the six stations, and 
was occasionally moderately frequent. 
Podon (') polyphemoides, though not so common as Evadne, is re- 
corded several times, and for at least four different stations. 
(g) CopEpopa. 
The Copepoda, though usually present in nearly all the tow-net gather- 
ings, being sometimes common or even abundant, do not usually show 
much variety of species. The following is a list of the Copepods 
recorded in the various tow-net gatherings collected during the seven 
years at the six selected stations :— 
Calanus finmarchicus (Gunner). Anomatlocera patersont, Templ. 
Pseudocalanus elongatus, Boeck. Parapontella brevicornis (Lub.). 
Temora longicornis (Miiller). Oithona (2) similis, Claus. 
Centropages hamata, Lill}. Thalestris longimanus, Claus. 
Centropages typicus, Kr. . Thalestris serrulatus, Brady. 
Metridia hibernica (B. & R.). Alteutha depressa (Baird). 
Candace pectinata, Brady. _ Dermatomyzon nigripes (B. and R.). 
Acartia sp. (2 Clausia and longi- Monstrilla sp. 
remis). Caligus rapax, Miller 
