1 60 Short Communications : — ' 



thina communis v. r, ; Tornatella tornatilis r, ; J5uccinum an- 

 glicanum v. r. ; Terebra reticult4ta c, perversa r. ; Fusus cos- 

 tatus r,, nebulay', linearis r. ; Pleurotoma gracilis v. r. ; Ros- 

 tellaria pes-pelecani; Capulus hungaricus v. r»; Fissurella 

 grae^ca v, r, ; Pecten opercularis r., varius r. ; Pectunculus 

 pilosus r. ; Nucula niiclea r. ; Modiola discrepans r. ; Cardium 

 tuberculatum c, ; Corbura striata f, \ Mactra solida c, sub- 

 truncata r., stultorum c. ; Kellia rubra r. ; Amphidesma con- 

 vexuni r., compressumc, Boysn'y^; Tellina fabula^^, crassar.; 

 Cyprina islandicay^ ; Cythere« Chion^y., exoleta r. ; Venus 

 verrucosa r., ^allina c, undata r. ; »Solen vaginay^, ensisj^, le- 

 gumen c, ; Lutraria vulgaris c. ; Montacut« bidentatayi, ferru- 

 ginosay^ The three following are common on the rocks at 

 Aberystwith : — Turbo petrae^us, Tr5chus umbilicatus and 

 crassus. Besides the above, I also found at Aberdovey six 

 or eight species, v^^hich I have not yet ascertained, and some 

 of which I believe have not been described. — H. E. Strick- 

 land. November 22. 1833. 



The folloisoing Species of British Land and 'Fresh^water Shells 

 have been collected in the Neighbourhood of Rugby, Warwick- 

 shire : — In the Oxford and Coventry Canal, Cyclas rivicola. 

 In the canal and river Avon, Cyclas cornea, pusilla ; A'nodon 

 cygneus; Mysca pict5rum, ovata. In gardens and hedges, 

 Helix nemoralis, hortensis, aspersa. In Newbold lime pits, 

 Helix ericetorum, hispida. The following were found in a 

 mass of silt and dead leaves, left after a flood, upon the banks 

 of the Clifton Brook, near Brownsover Mill : — Helix nitens, 

 lucida, crystallina, pulchella; Bulimus lubricus; Succinea 

 amphibia; Carychium minimum; Vertigo pygmse^a ; Pla- 

 norbis carinatus, marginatus, vortex, fontanus, contortus, 

 ^Ibus ; Limneus auricularius, pereger, scaturiginum, stagnalis, 

 fragilis, palustris, fossarius ; Physa fontinalis, Valvata obtiisa, 

 Paludina impura, viridis. In the Oxford Canal, Paludina 

 achatina, vivipara. In the Bilton Brook, A'ncylus fluviatilis, 

 and a small species of Cyclas, unnamed in Turton's Manual 

 of the British Land and Freshwater Shells. — A. Bloxam. 

 Rugby, Warwickshire, January, 1834. 



A Portion of Pearly Matter found within a Shell of the 

 Freshwater Muscle [A'nodon cygneus) ; and the Reason why it 

 Was formed there, — In the hollow of one of the valves of 

 a freshwater muscle (A^nodon cygneus), which I lately picked 

 up by the side of one of the ponds in this neighbourhood, 

 I found a large irregular-shaped apparently solid mass of 

 pearly matter, rather more than 1 in. long, | in. broad, and 

 full \ in. high. It struck me as being an awkward encum- 

 brance for the animal, and I was puzzled, as neither dint nor 



