THE MOLLUSCA OF DORSETSHIRE. 31 
B. ANASPIDEA. 
APLYSIID/. 
APLYSIA, Z., 1767. 
110. A. punetata, Cuv. A. hybrida, Sov. 
UT: 
Lives upon Sea-weed and Zostera from low-water to 5 or 
6 fathoms. 
Portland, Zostera bed, W. Thompson. 
Weymouth, Damon. 
Lyme Regis, J. W. Cuncdell. 
PLEUROBRANCHIIDA. 
PLEUROBRANCHUS, Cuvier, 1805. 
P. plumula, Mont. 
Weymouth, Sandsfoot, under stones, H. 2. Sykes, 
Var. alba. 
112. 
113. 
Weymouth, Damon. 
P. tuberculatus, Mechel, 1808. P. membranaceus 
(Mont.) Lamellaria membranacea, JJont. 
A very local shell. Mr. Gwyn Jeffreys (1869) knew of only 
three records beyond the Lritish seas—the north of 
France, Naples, and Trieste. 
Shell ear-shaped, membranous, and transparent. 
Weymouth, Damon. 
RUNCINIDE. 
RUNCINA, forbes, 1853. 
R. coronata, Quatrefages, 1844. R. Hancocki, Forbes. 
Brit. Conch., Vol. v., p. 16. 
“ Specimens sent me from Weymouth by Mr. Thompson 
were dark purplish-brown with minute round spots of 
yellow, a streak of the former colour on the tail. The 
branchial plumes lay on the right hand side of the vent. 
They were extensile and exceedingly active, Jeffreys. 
Belmont Bay, near Weymouth, W. Thompson and Gray ; 
Sandsfoot, among Zostera, H. Ll. Sykes. 
