134 I'ht Irish Naturalist. [ May, 



{Peden maximus, P. opercularis, Mya truncata^ &c.) whicli 

 yielded excellent results. The rest of the bottom is covered 

 with vast numbers of Ascidiella aspersa, and elsewhere with 

 meadows of Zostera rooted in mud, except off Glanleam, 

 where there is a bottom of sand and gravel, containing a 

 limited but well-differentiated fauna. 



The Hydroids were not well represented. The abundance and 

 small size of the Medusa of Corymorpha 7iuta7is in the water of 

 the harbour, argued the presence of the Hydroid in the imme- 

 diate neighbourhood, but in spite of arduous labours we did 

 not find it. In fact, notwithstanding the presence of several 

 medusae with known hydroid stocks, none of the latter were 

 obtained. Halecium Beanii was dredged once (with gonophores) 

 in the harbour. The two species oi A7itennularia were com- 

 mon, and upon these were young specimens oiLomanotus Genei^ 

 Doto coronata and D. fragilis. Doto pinnatifida occurred a 

 couple of times on the shelly ground in company with the 

 following : — EpiznaTithus Couchii ; TuRBEiyi^ARiA : — Prosthe- 

 cercBus vittatus, Oligocladus saiiguhioleyituSy Eurylepta cornuta 

 and the other Polyclads taken in the littoral zone. Nkmkrtka: 

 — Amphiporus dissimulans, Riches, Tetrastemma Jlavidum (var. 

 lo7tgissimunt), Carinella aragoi, Lineus bilineatus^ Micrura 

 fusca, M. fasciolata, M. purpurea. ANNEiyiDA : — Pontobdella 

 muricata, Phascolion strombi, Phascoloso77ia papillosu7n. Opis- 

 THOBRANCHIA : — Polycera ocellata^ Eolis angulata, Coryphella 

 La7idsburghiiy Cratena a77tce7ia, C. olivacea, Amphori7ia ccBrulea^ 

 ETtibletoTiia pulchta, Galvina pida?- Pycnogonida : — Phoxi- 

 diihis IcBvis, A. petiolatus,'' Palle7ie brevirostris, and great numbers 

 of A7nmothea echinata. 



On the muddy ground of the harbour Asddidla aspersa 

 itself contains a small fauna. Its test was covered with 

 A7itedo7i europcEa and riddled by CreTiella mar7norata, whilst 

 amongst the mud of its attachment, the three species of AfzVrwra, 

 Siphonosto77ia diplochcetos and Phascolosoi7ta te7iuicindu77t were 

 found. The Turbellaria and Nemertea were identical with 

 those of the shelly ground. A7nphiporus ladifloreus however 



* J^rof. Haddon in a list of forms from Valencia, July, 1887, which he 

 has kindly communicated tome, notes G. Farrani, now, according to some 

 authors, a variety of G. tricolor Forbes. 



' Along with Anopl. petiolatus, Kr., we obtained specimens of ^./J'^w^mj, 

 Hodge. Canon Norman {Ann. Mag. Nat. Hist. (6) xiii., 1894, pp. 153-4) 

 considers the latter to be immature examples of A. petiolatus. 



