POLYCH.ETA OF PLYMOUTH. 605 



Torquay. Two examples from the shore at Babbacombe {Elwes, 



Joiun. M.B.A., vol. S, 1908, p. 201). 



AuTOLYTUS EHBiENSis dc St. Joseph : Mcintosh, Mon. Brit. Ami. II. 

 2, 1910, p. 243. de St. Joseph, Ann. Sci. Nat. ZooL I. 1886, p. 228. 



Plymouth. From Laminaria roots and sea-weeds from the 

 shore at Rum Bay, and amongst Ascidians, etc., from Millbay Dock. 

 Dredged off Yealm Head and near the Eddystone. 



Breeding : Specimens with chains of buds in January, in 

 February and in April. 



Torquay. Found in great abundance on Fucus, which was 

 covered with Sertularia puniila, on the Breakwater at Babbacombe 

 {Elwes, Journ. M.B.A., voL 8, 1908, p. 201). 



AuTOLYTUs PUNCTATUS dc St. Joscph : Ann. Sci. Nat. Zool. I. 1886, 

 p. 233. 



Plymouth. Not uncommon on Queen's Ground and on the 

 Rame-Eddystone and Looe-Eddystone trawling gTOunds. 



Breeding : Specimens with stolons were taken from May to 

 July. The breeding season probably extends considerably beyond 

 these months. 



This species has only been recorded from Dinard by de St. Joseph, 

 from Boulogne by Malaquin (Syllidiens, Lille, 1893, p. 80), and from 

 the west of Ireland by Southern (Proceed. R. Irish Acad. XXXI. 47, 1914, 

 p. 42). It is easily recognised from de St. Joseph's description. 



Autolytus Ed"warsi de St. Joseph : Ann. Sci. Nat. Zool. I. 1886, 

 p. 235. 



Plymouth. This species is common in dredgings from Duke 

 Rock and the rocky ground immediately south of the Breakwater. 

 It appears to often live in tubes attached to the fronds and roots of 

 Laminaria. 



Breeding : Specimens with stolons were found from March to 

 June and the breeding season probably extends beyond these 

 months. 



The species, which is well defined, has only been recorded by 

 de St. Joseph from Dinard, by Malaquin (SyUidiens, Lille, 1893, p. 80) 

 from Boulogne, and by Southern (Proceed. R. Irish Acad. XXXI. 47, 1914, 

 p. 43) from the west of Ireland. 



Autolytus prolifer (0. F. Miiller) : de St. Joseph, Ann. Sci. Nat. 

 Zool. I. 1886, p. 238. Langerhans, Zeits. Wiss. Zool. XXXII. 1879, 

 p. 575. 



Plymouth. Two specimens from Millbay Pit dredgings and one 

 from dredgings from the rocky ground south of the Breakwater. 



Breeding : Specimen in May had one stolon. In July a female 

 had many eggs in the body segments. 



The pharynx has ten large equal teeth, which according to Langer- 

 hans and de St. Joseph is characteristic of this species. The body 



