340 GUERNSE Y. 
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Pleurosigma angulatum, Sm. 
Abundant in the brackish pool at Pulias, and in the (now filled 
up) marsh at Bordeaux. Sparingly at Moulin Huet. 
Pleurosigma quadratum, Sm. 
Pulias pool, and at low-water mark, Bordeaux: in each case only 
a single specimen. 
Pleurosigma Normani, Ralfs. 
Rather common at Cobo, Bordeaux, and Perelle Bay. 
Pleurosigma Hippocampus, Sm. 
Marsh between Grande Mare and Vazon: rather scarce. 
Pleurosigma acuminatum, Sm. 
Pleurosigma Wansbeckii, Donk. 
Perelle Bay, one specimen. 
Pleurosigma attenuatum, Sm. 
Fort Doyle pool, abundant. Saints Bay Valley, common. 
Pleurosigma Spencerii, Sm. 
Roadside streamlet near Lilyvale, common. A few specimens in 
the Cobo peat deposit. 
Donkinia compacta, Ralfs. 
Perelle Bay, one specimen. 
Toxonidea insignis, Donk. 
Cobo, at extreme low-water mark, three specimens. Perelle 
Bay, one. All the specimens were short and broad, resembling 
a cocked hat rather than a strung bow, to borrow Donkin’s apt 
comparison. 
Stauroneis Phoenicenteron, Ehr. 
Casrouge Valley and Grande Mare, rather common. 
Stauroneis gracilis, Ehr. 
Generally distributed and not uncommon. 
Stauroneis linearis, Sm. 
Stauroneis anceps, Ehr. 
Plentiful in a water-trough near Casrouge, Forest. 
Stauroneis pulchella, Sm. 
Common in all marine gatherings, varying much in size. 
