VOL. Xvi. (3) POLLICIPES AALENSIS, RICHARDSON 265 
NOTE ON 
POLLICIPES AALENSIS, RICHARDSON 
BY 
L. RICHARDSON 
A short while ago Miss H. M. Hutton, of Harescombe, 
sent me for identification an excellent specimen of one of 
the plates of the cirriped, Pollicipes. Finding that it 
belonged to a species as then unnoticed, I described it as 
Pollicipes aalenszs (fig. 1)." 
, 
, 
; 
Fic. 1.—Pollicifes aalensis, Richardson. 
Cirripedes—Barnacles—were until 1830 thought to be 
mollusks, but in that year it was discovered that they 
passed through what is called the “naupluis stage.” 
This stage the eucrustaceans also pass through, so it was 
obvious that they would have to be placed in the zoo- 
logical class, Crustacea. 
1 Geol. Mag., Dec. 5, vol. v, (1908), pp- 351-352- 
