80 



CONCHOLOGY. 



Lucida, 



Trochifor 

 mis, 



Lacuna, 



Univalve?, the pillar cavity, arid the" reflection of the pillar lip, dis- 

 "•"D 1 "" ■' tinguish it from the H. rufcscens, with the young of 

 which it has frequently been confounded. 



7. Lucida. Shell smooth, glossy, horn-coloured, 

 with five or six volutions, the lower one rounded, the 

 rest almost flat ; mouth lunated, margin thin ; pillar ca- 

 vity large and deep. Diameter usually three eighths of 

 an inch. 



Test. Brit. tab. 23. fig. 4. 

 Lin. Trans, vol. viii. tab. 5. fig. 7. H. nilms. 

 A common British shell. It is likewise very com- 

 mon in Zetland. It frequents moss, old walls and 

 stones. 



8. Trochifor mis. Shell thin, smooth, glossy, hom- 

 coloured, with six rounded volutions, strongly divided 

 by the separating line ; apex considerably produced ; 

 base a little rounded ; mouth sub-lunated, transversely 

 compressed ; lip attenuated ; pillar cavity small ; dia- 

 meter about one eighth of an inch. 



Test. Brit. tab. 11. fig. 9. 

 This is a rare shell. Found in Wiltshire and De- 

 vonshire by Mr Montagu. 



9. Lacuna. Shell thin, sub-globose, of a light horn- 

 colour, with four tumid smooth spires, the first large, 

 the two uppermost very small, and placed somewhat 

 laterally ; mouth large, outer lip thin, pillar lip thick, 

 white, grooved, with a long canal which ends in a small 

 but deep pillar cavity. Diameter about a quarter of an 

 inch. 



Test. Brit. tab. 13. fig. 6. 

 Found by Mr Montagu on the shore, about high- wa- 

 ter mark, at Southampton, and sparingly on the De- 

 vonshire coast. Mr Laskey has likewise found it at 

 Dunbar. 



10. Spinulosa. Shell sub-pellucid, with five round- 

 ed volutions well defined by the separating line, fur- 

 nished with regular membranaceous striae that rise into 

 fine hair-like spines, particularly round the middle of 

 each volution ; apex considerably produced ; mouth se- 

 milunated; pillar cavity small; diameter about one- 

 tenth of an inch. 



Test. Brit. tab. 11. fig. 10. 

 This shell is -rather a local species. It has been 

 found in several places in England. We have found it 

 in Scotland at Tarvet mill near Cupar, Fifeshire, among 

 moss. 



1 1 . Caperata. Shell sub-pellucid, somewhat com- 

 pressed, with six whorls, furnished with strong, regu- 

 lar, close-set, longitudinal stria?. On the upper part 

 of the body whorl there is usually a brown belt ; mouth 

 lunated ; lip thin, not reflected ; pillar cavity large and 

 deep ; diameter at the base about half an inch. 



Test. Brit. tab. 11. fig. 11. 

 In England among dry short pasture, frequent. 

 Found likewise at Musselburgh by Mr Laskey. 



12. Radiata. Shell compressed, sub-carinated, rayed 

 with chesnut ; whorls six, not much raised, but well de- 

 fined by the separating line, and strongly marked with 

 close set regular longitudinal stria; from the apex across 

 the volutions ; pillar cavity very large ; diameter a quar- 

 ter of an inch. 



Pulteney's Dorset, tab. 20, fig. 15, 16. 

 Test. Brit. tab. 24, fig. 3. 

 A common British shell, found under stones, old 

 timber, and among moss. 

 Umbiiieata, 13. Umbilicata. Shell horn-coloured, with five whorls; 

 much rounded, deeply divided by the separating line, 

 and finely striated across the whorls ; apex a little pro. 



Spinulosa, 



Caperata, 



Badiata, 



Ericett 

 rum, 



duced ; lip attenuated ; pillar cavity large and deep ; 

 diameter one tenth of an inch. 



Test. Brit. tab. 13, fig. 2. 

 Found by Mr Montagu at several places in England ; 

 we have likewise observed it common in Scotland. It 

 is found in the same places with the preceding, to which 

 it bears a resemblance, and with which it may easily be 

 confounded. 



14. Lapicida. Shell sub-pellucid, compressed, brown Lapicida 

 variegated with darker shades ; whorls five, almost flat, 



the lowest whorl carinated or brought to a sharp edge ; 

 striated transversely ; pillar cavity wide and deep ; 

 mouth suboval ; margin sharp, white, outer lip reflect- 

 ed, inner lip spreading on the body ; diameter three 

 quarters of an inch. 



Brit. Zool. tab. 83, fig. 121. 



Brit. Shells, tab. 39, fig. 2. 

 Inhabits England in shady woods, as well as rocky 

 exposed situations. 



15. Ericetorum. Shell sub-pellucid; whorls six; the 

 first remarkably rounded, the superior ones scarcely 

 elevated above the body whorl ; wrinkled transversely ; 

 on the upper part of the large whorl is a brown band, 

 which continues spirally at the bottom of each of the 

 smaller volutions, and marks then - division ; pillar ca- 

 vity large and deep ; mouth suborbicular ; margin thin ; 

 diameter three quarters of an inch. 



Brit. Shells, tab. 151, fig. 2. 

 Brit. Zool. tab. 85, fig. 122. H. albella. 

 Common in England upon dry sandy heaths ; has like- 

 wise been found in Iona, by Mr Hanson. 



16. Subcarinata. Shell white, sub-pellucid with g u b C ari. 

 three whorls, the lower one large, the others small, a na t a , 

 little produced and placed somewhat laterally ; round 



the base of the body wreath are two fine ridges ; pillar 

 cavity deep and large ; mouth oval, outer lip projecting 

 considerably ; inner lip reflected ; diameter one tenth 

 of an inch. 



Test. Brit. tab. 7, fig. 9. 

 Found by Mr Montagu in sand from Salcomb bay, 

 and other places on the south coast of Devon. 



17. Depressa. Shell light brown subpellucid ; volu- DepressaJ 

 tions three or four, the superior ones scarcely elevated 



above the body, lower volution cylindrical ; pillar cavity 

 large ; mouth round, nearly even, lateral and not clasp- 

 ing the body, but spreading a little on that part. 

 Test. Brit. tab. 13, fig. 5. 

 Found by Mr Montagu in sand from Whitsand bay, 

 and Falmouth hi Cornwall, and at Burrow island De- 

 vonshire. 



18. Paludosa. Shell smooth, white, with four round- Paludosa, 

 ed volutions, well defined, apex little elevated ; pillar 



cavity large; mouth round; margin thick, opake, white, 

 reflected ; diameter one tenth of an inch. 

 Lin. Trans, vol. viii. tab. 5, fig. 5. 

 Test. Brit. tab. 13. fig. S. var. H. crenella. 



Found among moss, under decayed leaves, and in 

 marshes, common in England and Scotland. A variety 

 sometimes occurs with the volutions striated across in a 

 strong and regular manner, with a light brown epider- 

 mis. This was figured by Lightfoot, Phi!. Trans. 76. 

 tab. 3, fig. 1, 2, 3, 4. 



J9. Unispiralis. Shell white, opake, glossy ; mouth Unispiralis ; 

 round, with one whorl, with a central cavity on both 



Test. Min. Rar. tab. 1, fig. 27. 

 Found at Sandwich ; not common. 

 20. Resupinala* Shell horn-coloured, semi-pellucid, Resupina- 



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