MARINE BIOLOGICAL STATION AT PORT ERIN. 57 



viz., two starfishes, a brittle-star, a sea-urchin and a 

 sea-cucumber, all of which may usually be seen in our 

 aquaria. 



Figure 23 represents small pieces of three common 

 colonies of Hydroid Zoophytes, number 3 being natural 

 size and numbers 1 and 2 showing expanded living zooids 

 as seen enlarged under the microscope. Figure 24 gives 

 a series of common Molluscs, including Bivalves, Uni- 

 valves and Cuttlefishes. Finally, fig. 25 is an assemblage 

 of "Plankton," the delicate and for the most part minute 

 forms of life found floating in the surface waters of the sea, 

 and which are collected by means of a fine silk tow-net. 

 Amongst them occur (No. 13) the eggs and larvae of many 

 edible fishes, and also representatives of the Copepoda (9 

 and 12), small crustaceans which are of great economic 

 importance as the food of fishes and other useful animals. 



L.M.B.C. Memoirs. 



Since the date of the last Annual Report the 

 Committee have issued two Memoirs — 

 No. VIII. Pleuronectes, the Plaice, by Mr. F. J. Cole and 



Mr. James Johnstone ; and 

 No. IX. Chondrus, a Red Sea-Weed, by Dr. 0. V. 

 Darbishire. 



" Pleuronectes " is by far the largest and most 

 elaborate Memoir we have yet published, and the Com- 

 mittee have to thank the Publication Committee of 

 Victoria University for a grant-in-aid, of £35, to meet part 

 of the expense of the preparation of the eleven beautiful 

 plates showing the skull, brain, nerves, sense-organs and 

 other details in the structure of the Plaice. "Chondrus" 

 is our second botanical Memoir, the first being the green 

 sea- weed " Codium," by Professor Harvey Gibson and Miss 

 Helen Auld, "We hope others will follow. Botanists 



