Dr. Johnston's Index to the British Annelides. 461 



Ohs. Halithcea clava, Templeton in Loud. Mag. N. Hist. ix. 234, 

 may not be distinct from this species. 



3. P. impar. 



Polynoe impar, Johnston in lib. cit. ii. 436. 



4. P. viridis. 



Polynoe viridis, Johnston in lib. cit. ii. 437. 



5. P. scolopendrina. 



Polynoe scolopendrina, Johnston in lib. cit. v. 307. 



Aphrodita. 



Aphrodita, Linn. Syst. 1084. Aud. and M. Edw. Litt. de la France, 

 ii. 63. Leach in Suppl. Encyclop. Brit. i. 452. Johnston in 

 Ann. N. Hist. ii. 427. — Halithea, Lam. Anim. s. Vert. v. 306. 



\. A. aculeata. 



Aphrodita aculeata, Johnston in Ann. N. Hist. ii. 429; and v. 305. 

 — Templeton in Loud. Mag. N. Hist. ix. 234. 



2. A. hy stria:. 



Aphrodita hystrix, Johnston in Ann. N. Hist. v. 305 ; and iv. 370. 



3. A. borealis. 



Aphrodita borealis, Johnston in lib. cit. iv. 370. pi. 10. fig. 1-13. 



Species of Doubtful Place, 



Campontia. 

 C. eruciformis. 

 Campontia eruciformis, Johnston in Zool. Joum. iii. 325 ; and iv. 



421 ; and in Loud. Mag. N. Hist. viii. 179. fig. 18. M. Edwards 



in Lam. Anim. s. Vert. 2nde edit. v. 575 ; and in Litt. de la France, 



ii. 290. 



Obs. MacLeay first suggested that this might be the larva of a 

 dipterous fly, — a suggestion which Mr. Green thinks he has con- 

 verted into a certainty (Gharlesw. Mag. i. 279). But Mr. Green 

 has evidently never seen our Campontia, and his conclusion is hence 

 of no weight. 



Branchiarius. 



Branchiarius, Montagu in Linn. Trans, xi. 202. 



1. B. quadrangular is. 



Branchiarius quadrangularis, Montagu in Linn. Trans, xi. 202. pi. 14. 

 fig. 1. 



Diplotis. 

 Diplotis, Montagu in Linn. Trans, xi. 203. 



1. D. hyalina. 



Diplotis hyalina, Montagu in Linn. Trans, xi. 203. pi. 14. fig. 5. 



