454 Dr. Johnston’s Index to the British Annelides. 
Var. 6. Lid smooth and slightly concave. Mont. Test. Brit. Suppl. 
1572 No.1: 
See also the observations of J. B. Harvey in Charlesw. Mag. i. 477. 
4, Serpula contortuplicata, Linn. Syst. 1266. Templeton in Loud. 
Mag. Nat. Hist. ix. 233. Turt. Gmel. iv. 604. 
Obs. Turton makes this his var. B. of Serpula vermicularis. The 
character of it given by Linnzus is very applicable to some varieties 
of S. triquetra. 
Serpula contortus, Brown’s Illust. pl. 2. fig. 4. S. spiralis, ibid. fig. 6, 
and S. perversa, ibid. fig. 7, are common states of Serpula trique- 
tra, found on Sertularie and other corallines. 
5. S. serrulata. 
Serpula serrulata, Fleming in Edin. Encyclop. vi. 67. pl. 204. fig. 8, 
copied in Brown’s Illust. pl. 2. fig. 8. 
Vermilia serrulata, Fleming in Edin. Phil. Journ. xii. 243. 
Vermilia tricuspidata, Morris, Cat. Br. Foss. p. 67. 
6. Serpula filiformis. 
“Serpula filiformis, Rees, Cyclop. vol. 10." Templeton in Loud. 
Mag. Nat. Hist. ix. 233. Mr. Morris mentions a fossil Serpula 
filiformis, Cat. Brit. Foss. p. 66. The species intended by Tem- 
pleton may be Filograna impleza ? 
7. Serpula rugosa. 
Serpula rugosa, Turt. Conch. Dict. 154. 
Filograna. 
Filograna, Berkeley in Zool. Journ. v. 427.—Filipora, Flem. Brit. 
Anim. 530. 
1. Filograna impleza. 
Filograna, Plane. Conch. 46. 
Serpula corallifica, Pall. Elench. Zooph. 239. 
Serpula filograna, Linn. Syst. 1265. Berkeley in Zool. Journ. iii. 
230. 
Serpula complexa, Turt. Conch. Dict. 153. 
‘Lubipora fascicularis, Stew. Elem. ii. 426. 
Filipora filograna, Flem. Brit. Anim. 530. 
Filograna implexa, Berkeley in Zool. Journ. v. 427. 
Serpula minima? Lam. Anim. s. Vert. 2nde edit. v.625. Temple- 
ton in Loud. Mag. Nat. Hist. ix. 233. 
Ditrupa. 
Ditrupa, Berkeley in Zool. Journ. v. 426. 
1. D. subulata. 
Dentalium subulatum, Deshayes in Zool. Journ. iv. 194. 
Ditrupa subulata, Berkeley in Zool. Journ. v. 425-6. Morris, Cat. 
Br. Foss. p. 65. 
Obs. Mr. Berkeley, at one time, was led to refer the Dentalium 
