MARINE BIOLOGICAL STATION AT PORT ERIN. 128 
Centropages hamatus, March to September. 
Isias clavipes, May, June, and September. 
Coryceus anglicus; June and November. 
Candacia pectinata, June to August. 
Metridia longa, August. 
Anomalocera patersont, October. 
Lernea branchialis, November. 
Monstrilla sp., November. 
Larva of Bopyrid, December to February. 
Zoeas, January to June, August and November. 
Megalopas, May to August. 
Molluscan veligers, January to April, Sept. to Dec. 
Lamellibranch fry, September to February. 
Gastropod fry, January to March, July to October. 
Tunicata larve, Jan., Feb., July, August, and Nov. 
Otkoplewra, throughout the yeav. 
Fritillaria, October and November. 
Fish eggs, February, March, June. 
Fish larve, February to July. 
It will probably be convenient to readers if the HXPLAN- 
ATION OF THE PLATES is given here rather than at the end 
of the Report. , 
Fig. 
Fig. 
co) 
Fig. 
Fig. 
Fig. 
PuaTE VI. 
1. Planarian worm, Oct. 28th, 1898. 
2. Trochophore larva, Oct. 28th, 1898. 
3. Trochophore larva, showing early stage of meta- 
meric segmentation, Dec. 17th and 30th, 1898. 
4. Trochophore-like larva, with three bands of cilia. 
Pale-green, highly refractive bodies in interior. 
Dec. 30th, 1898, and Jan. 24th, 1899. 
5. Unknown larva. Organ o is paired, and the 
granules in the interior vesicle were in active 
rotation, Jan, 24th, 1899, 
