ASPIDOBRANCHIA. CHITONID. 231 
Habitat in mari Hiberniensi Australi rarissimé. Mus. nost. 
in Mus. Brit. Long. 2 unc. 
Shell sculptured, with very numerous and minute tubercles 
disposed in longitudinal lines. Length two-eighths of an inch. 
Inhabits the sea on the southern coast of Ireland; is very 
rare: I found a very few specimens in Dingle Bay. 
6. CHITON FUSCATUS. 
C. testa paululim carinata, dorso tuberculis minutissimis in 
lineis rectis dispositis sculpta ; tuberculis lateralibus indiscri- 
minatim digestis. 
Habitat in mari Cornubiensi Australi rarissimé. Mus. nost. 
in Mus. Brit. Long. 2 une. 
Shell a very little carinated ; back with very minute tuber- 
cles arranged in straight limes; the lateral tubercles indiscrimi- 
nately arranged. Length three-eighths of an inch. 
Inhabits the Welsh sea on the southern coasts: I found it 
first at the Mumbles near Swansea, and afterwards found a few 
more specimens at Milford Haven. 
7. CHITON LAVIS. 
C. testa convexa, carinata, glabra. 
Chiton levis, Penn. Brit. Zool. iv. 102. t. xxiv. f. 2; Gmel. 
Syst. Nat. 3206; Mont. Test. Brit.2; M. §& R. Trans. 
Linn. Soc. vii. 21; Flem. Edinb. Encycl. vu. 76; Turt. 
Conch. Dict. 33. 
Habitat in mari Zetlandico, rarissimé. Mus. D. Fleming; et 
nost. in Mus. Brit. Long. 2 une. 
Shell convex, carimated and smooth. Length two-eighths of 
an inch. 
Inhabits the Shetland sea. 
Discovered by the Rev. Dr. J. Fleming in Shetland, who 
communicated it to me. 
8. CHITON LATUS. 
2d 
