THE DIRECTOR S REPOllT. 7 



Cyprssa europpea can always be found. Natica monilifera and nitida 

 occur on sandy bottoms, wliilst their interesting allies, Lamellaria 

 perspicua and tentaculata, are found on weeds, witH colonies of 

 Botryllus, Didemnum, and other compound Ascidians. 



" From deeper water come Turritella terehra, Ovula patula, Eulima 

 nitida, Emarginula reticulata, Aporrhais pes-pelicani, 8calaria Tur- 

 tonis, Cerithium and Cerithiopsis, &c. The palliate and non-palliate 

 Opisthobranchs are well represented. Aplysia hyhrida is fairly 

 common, and especially so in its young stage of 7iexa. Eolls papillosa 

 and Doris tuhercnlata can generally be obtained, while smaller species 

 of each of these genera are abundant. Goniodoris nodosa, Polycera 

 quadrilineata, Dendronotus arhorescens and Tritonia plebeia occur in 

 the Sound. The remarkable Elysia viridis is common at the mouth 

 of the Yealm. 



" Dentalium is rare, but has been taken several times. 



" Of the Cephalopoda, Eledone cirrhosus has been taken occa- 

 sionally in the Sound, and so has Loligo vulgaris. A specimen 

 of Loligo media of Linnaeus has been taken from Cawsand Bay, 

 and one of L. marmorse of Yerany from off the Draystone. Sepiola 

 atlantica (D'Orbigny) is common everywhere. Many Lamelli- 

 branchiata require to be specially searched for on account of their 

 habits of life, and this work has not yet been done. Teredo is found 

 rarely, while Saxicava riigosa excavates the rocks of limestone 

 everywhere. Small species of Pecten are very abundant, as also of 

 Anonvia, specimens of which are found attached to roots and stems 

 of Laminaria. I have found Grenella marmorata attached or buried 

 in the tests of Cynthia tuherosa and Styela grossularia. A single 

 specimen of Pectmiculus glycimeris has been taken from the Catte- 

 water, but in all probability had been thrown overboard from some 

 trawler. Indeed, all the finer bivalves came from deep water outside 

 the Sound." 



Polyzoa are found in great number and variety within the Sound. 

 The most common forms are Bowerbankia imhricata, Grisia ehurnea, 

 Alcyonidium gelatinosum, FlustreJla hispida, Scrupocellaria scruposa 

 and reptans, Bugula Jlahellata, Gellariafistulosa, Memhranipora pilosa 

 and membranacea, Lepralia foliacea, and Gellepora pumicosa and 

 avicularis. Both Pedicellina and Loxosoma are taken within the 

 Sound. The former (P. cernua and gracilis) is very common in tide 

 pools, the latter was brought in once during July. 



Although the Brachiopoda Terebratula and Argiope are recorded 

 in Mr. Heape^s list, the Association has been hitherto unable to find 

 either of these forms within or without the Sound. 



Of the Gephyrea Thalassema Neptuni is sometimes found in holes 

 in stones within the breakwater, but it is much more common near 



