4 64 . CONCH 
capenfis. 7. S. cylindrical, conic, open at both ends ; membra- 
naceous ; rough, with interrupted, tranfverfe ftriae. 
Cape of Good Hope. 
nigra* 8. S. cylindrical, black, fmoothiffi on the outfide ; 
compofed of minute particles of fand ; -§■ inch long. 
Rivulets of Thuringia. 
f agnail's. 9. S. ftraight, tapering, open at both ends 5 fmooth, 
with a margined aperture, compofed of very minute 
particles of fand. Rivers of Thuringia. 
conica. 10. S. narrow, conic, fmooth, ftraight, cinereous; 
with a blackiih open tip, compofed of very minute par- 
ticles of fand ; not 4 inch long. 
uncinala. 1-1. S. fmooth, round, tapering, with an open hooked 
tip ; 4 inch long. Rivers of Thuringia. 
fabulofa. I 2. S. cylindrical, clofed at the tip, fubclavated, per- 
forated, and compofed of larger grains of fand ; not an 
inch long. Thuringia and Belgium. 
r oegetabilis. 13. S. depreffed, compofed of fragments of twigs, 
ftems and bark, and broken pieces of the tellina cor- 
nea ; an inch long. Waters of Thuringia. 
ammoniata 14. S. polygono-cylindrical, within fmooth, compo- 
fed of fragments of cornu ammonia. Rivers. 
helicina. 15. S. round, within fmooth, compofed of fragments 
of the helix pufilla ; an inch long. Stagnant waters* of 
Thuringia. 
dimidiata . 16. S. one part of the fhell compofed of fand or gra- 
vel, the other thicker, clavated, and compofed of frag- 
ments of Ihells. Waters of Thuringia. 
fixa. 17. S. compofed of fmall ftones ; tapering towards 
the tip ; an inch long ; affixed to ftones in the water, 
and open at the fide by which it is fixed. Thurin- 
gia- 
clavata. 18. S. compofed of fmall ftones; the open end cla- 
vated, and confifting of larger ftones ; folitary. Thu- 
ringia. 
corticalis. 19. S. compofed of pieces of bark, towards the end 
of broken ftems. 
arundina- 20. S. fubconic, open at both ends, compofed of frag- 
csa. ments of the bark of reeds, placed on each other ; an 
inch long. 
aculeata. * 21. S. compofed of fmall twigs, the points of which 
projeft a little ; an inch long. Thuringia, Bri- 
tain. 
marfupia- 22. S. black ; open end cylindrical and narrower, the 
lis. other part tinged and ovate ; 2 inches long. 
siorwegica. 23. S. roundiffi, open at both ends, brittle, membra- 
naceous ; compofed of very minute grains of fand ; 4 
inches long. Norway. 
lumbrica- 24. S. coarfe, creeping, fragile, open at both ends ; 
lis . the animal not furniffied with teiftacula at the mouth ; 
body pricky, jointed. Deeps of the Greenland feas ; 
fixed to ftones. 
indica . 25. S. cylindrical, compofed of capillary, fub- 
cylindrical, agglutinated cryftals of quartz. Indian 
ocean. 
arenaria . * 26. S. extremely fragile, cylindrical, compofed of 
pure fand, {lightly cemented together, without any in- 
ternal membrane ; fize of a raven’s quill ; from 1 to 2 
inches long. Dorfetffiire coaft. Montagu, 
fubcylin * 27. S. long, fubcylindric, {lender, fragile, compofed 
drica. of fine fand, and minute bits of broken {hells, cemented 
together on a fine membrane ; 3 inches long. Salcomb- 
bay. Montagu. 
jetiformis. * 28. S. long, {lender, gradually tapering to the lower 
end, compofed of fine fragments of {hells, and minute 
O L O G Y. Chap. IV, 
flat bits of ftones, cemented together at their edges *,3 
to 4 inches long. Salcomb bay. — Some have been ob- 
ferved with a lateral branch near the fmaller end, which 
is fuppofed'to be a young one. Montagu. 
* 29. S. fmall, fliort, compofed of fand and minute bits curia, 
of flat ftones, agglutinated to a tough membrane ; fize 
of a crow quill; an inch long. Inlet near Kings-briage. 
This fabella is gregarious, covering the whole furface 
of the {bore, appearing like bits of ftraw covered with 
mud. Montagu. 
* 30. S. fhort, broad, and very flat, compofed of large comprejfia, 
fragments of flat, bivalve ffiells, placed with the con- 
cave fide inwards ; 14 inch long. Deeps at Torcrofs, 
Devonffiire. 
Number of Species included under each Genus, in //^Enumera- 
tion of the 
fpecies. 
preceding Clarification. 
I. Multivalves. 
Genera. 
1. Chiton, 
2. Lepas, 
3. Pholas, 
II. Bivalves. 
III. Univalves. 
18. Argonauta, 
19. Nautilus, 
20. Conus, 
21. Cyprea, 
22. Bulla, 
23. Voluta, 
24. Buccinum, 
25. Strombus, 
26. Murex, 
27. Trochus, 
28. Turbo, , 
29. Helix, 
30. Nerita, 
31. Haliotis, 
32. Patella, 
33. Dentalium, 
34. Serpula, 
35. Teredo, 
36. Sabella, 
Total number of fpecies. 
Species. 
29 
33 
1 2 
~ 74 
4. Mya, 
- 
3 1 
5. Soien, 
. 
24 
6. Tellina, 
- 
94 
7. Cardium, 
- 
52 
8. Madfra. 
27 
9. Donax, 
• 
21 
10. Venus, 
- 
152 
11. Spondylus, 
- 
4 
1 2. Chama, 
2 5 
13. Area, 
c 
43 
14. Oftrea, 
136 
15. Anomia, 
=. 
51 
16. Mytilus, 
- 
65 
17. Pinna, 
- 
18 
— 743 
-1855 
2672 
Species 
