28 Br. H. Woodward — Devonian Trilohites from Cornwall. 



The most interesting of these is certainly the rare Hygromia 

 revelata (Fer.), which I came across at St. Michael's Mount. I found 

 it high up on small ledges of rock. 



From the same locality I obtained the two shells of Testacella 

 maugei. One of them is unusually large, measuring 18 mm. from 

 the tip of the vestigial spire to the anterior margin. This discovery 

 considerably extends the known range of this species in Britain. 



I obtained only one specimen of Vitrea lucida. In the woods 

 among the dead leaves I found Vitrea excavata in abundance, also, 

 among the ivy, the pretty little Acanthimda aculeata, and, in 

 hollows, Vitrea fulva. In the hedgerows, and particularly among 

 nettles, I obtained Hygromia granulata, H. hispida, and H. rufescens ; 

 and on walls, Clausilia hidentata and Pupa cylindracea. On the 

 sand-hills along the coast Helicella barbara occurred in myriads, 

 together with H. virgata, H. itala, and H. caperata ; it is noteworthy 

 on account of the abnormal shape of the shell and its limited 

 distribution in this country. 



Ancylus fluviatilis is the only aquatic mollusc I succeeded in 

 'finding. It was common on the stone-strewn bed of the streams. 



VI. — On two Tkilobites from the Devonian Slates of 

 Cornwall, obtained by Walter Barratt, Esq. 



By Henry Woodward, LL.D., F.R.S., F.G.S. 



HAVING been favoured by Mr. Walter Barratt, of Sunnybank, 

 Newquay, Cornwall, with the opportunity of examining two 

 Trilobites from the Devonian slate-rock — (1) from a cove near 

 Trevose Head, (2) from the shore of the mainland opposite Trescore 

 Island, Porthcothan, Cornwall, — I gladly avail myself of his 

 permission to publish a note thereon. 



Pig. 1. — A new Devouian Trilobite from Cornwall: Eoinalonotiis Barratti, sp. nov. 

 Two-thirds nat. size. Devonian Slates : Trevose, Porthcotlian, Cornwall. 



