MARINE BIOLOGICAL STATION AT PORT ERIN. 313 



in the tow-nettings in 1899, with the times at which they 

 occurred. 



Diatoms, throughout the year. 



Ceratium tripos, G. ficsus, and C. furca throughout 



the year. 

 Tintinnus, September to December. 

 Codonella, November. 

 Dictyocysta, December. 

 Radiolarians, October to March. 

 Actinula larva of Tubular ia, June. 

 Phialidium tempor avium, January and May to August. 

 P. cijmbaloideum, May, June, and July. 

 Hybocodon prolifer, January. 

 Sarsia tubulosa, May to August. 

 Obelia, February to November. 

 Gorymorplia nutans, June and July. 

 Mitrocomella polydiadema, June and July. 

 Margelis bella, May to July. 

 Tiara pileata, July, August, and December. 

 Saphenia mirabilis, April. 

 Euchilota pilo sella, June to August. 

 Laodice calcarata, May. 

 Melicertidium octocostatum, August. 

 Aurelia aurita, June to August. 

 Pelagia perla, October. 

 Pllema octopus, March, May, and October. 

 Cyanea, July and August. 

 Agalmopsis elegans, May to August. 

 Hormiphora, March to November. 

 Pleurobrachia, June to October. 

 Beroe ovata, July and August. 

 Arachnactis bournei, May and June. 

 Gastrulating blastospheres, probably Asterid, 



November to March and June. 



