SABELLA. ME aelt 
but has been described and figured with that name in the 
‘ British.Mollusca’ (pl. 1, f. 7, and pl. 18, f. 3, 4). 
“ Acta Flissens. 1769, p. 387, t. 2, see worm” was written by 
Linneus in his revised copy of the ‘ Systema.’ 
SA By Heb lL a. 
This genus was first constituted, in the twelfth edition of the 
‘Systema,’ for the reception of the Serpula penicillus, S. ringens, 
and T'ubipora arenosa of the tenth edition, and certain allied 
forms then first enumerated. As the principal design of this 
publication has been the elucidation of the Linnean shells in 
the restricted sense of the word only, I shall not devote much 
space to the critical examination of the separate members of 
this group, but simply relate the few changes or additions pro- 
posed by Linneus in his revised copy. He has not recorded 
his possession of a single one of them, so that his cabinet would 
not be of authority in determining what were the originals of 
his descriptions. 
In the generic definition Linneus has expunged the four last 
words, and substituted ‘‘ membranacea.” 
S. GRANULATA. For an illustration of this species we are 
referred to ‘“ Mart. Syst. 71, t. 4, f. 28,” the tube of a Tere- 
bella which is not uncommon in the sandy coasts of Great 
Britain. 
S. niIncENS. Evidently not even an Annelide, but the larva- 
case of an insect. Baster’s drawing, however (only quoted in 
the final edition), represents an English Terebella. 
S. ALVEOLATA. Evyidently the common Sabellaria alveolata of 
our own shores. 
S. corysopon. Reference has been made in the revised 
‘Systema’ to figures 29, 30 of Martini’s ‘ Conchylien,’ which 
appear to represent the Terebella chrysodon of authors, a 
