14 WORMS. TESTACEA. 5. Chiton. 
Marmora- Shell 8-valved, fmooth, elegantly varied with white and 
fus. blackifh, the middle valves greenifh within. 
Chemn, conch. 8. tab. 95, fig. 803—805. 
Chemin. cbiton, tab. Y, fig. 8. —- 
Knor, Vergn. 4. tab. 17; figs 4s 4. 
2. 7-valecd, Schrat. Litt. 4. tab. 1, fig. 3. 
Inhabits America; varioufly marked with alternate blackifh and 
white bands, ftreaks, veins and fpots; the border tumid, {ca- 
ly, with alternate whitifh fleel-blue and blackifh patches, 
Granulatus, Piceous; above flat with numerous raifed dots difpofed in 
T rows ; border broad, coriaceous, fpinous, with alternate 
black and white patches. cid 
Chemn. conch. 8, tab. 96, fig. gob. ~ 
Inhabits America, Valves 8, rarely 7. 
Picture Shell 8-valved ; above fmopth, piceous, and varied with 
white and black. 
Chemn. conch, 8. tab. 96. fig, 807—810. 
Chemn. chiton. tab. 2, fig. 6. and 6. a,b, c. 
Inhabits American and Red Seas; refembles the laft.- 
Shell black in the middle within; the fides greenifh ; back with 
alternate black fpots, and whitifh fpots, bands and veins; 
valves rarely 7 or 6, E 
Indus Shell 8-valved, whitifh-afh, with a fcaly border; middle- 
valves very finely pun&ured. 
Inhabits America. — Chema. concb . 8y tab. 96, fig. 811. 
Minimu;, Shell 8-valved, fmooth, black, and covered here and there 
with meal. Rod j 
Chemn. conch, 8. tab, 96, fig. 814. 
Inhabits the Noravay Seas; very imall. 
Shell 8-valved, carinate, diaphanous, banded: each of the 
cxtreme valves very finely punctured, 
Chemn. conch. 8. tab. 96. fig 815. 
Inhabits Norway; {mall: within whitifh-afh; with alternate 
blackifh and paler bands, 
Cimix. 
Afellus. Shell 8-valved, deep black, above convex with a yellowifh 
‘i fpot on each of the valves. 
Chemn. conch 8. tab. 96, fig. 816. 
Inhabits North Seas 3 affixed to the Mytilus modiolus, 
Gizas. 
