Clare Island Survey — Archiaunelida and Polycliaeta. 47 41 



Autolytus pictus (Ehlers). 



1908. Autolytus pictus. Mcintosh, p. 211. 



This species is very common on the shore, sometimes under stones, but 

 more frequently in weeds and Laminaria roots. It is also commonly taken 

 in the dredge. 



Habitat. — Blacksod Bay — Found on the shore on six occasions. Dredged 

 on two occasions in 2-8 fms. Clew Bay — Dredged on six 

 occasions in 4-16 fms. 

 Distribution. — British Isles ; France ; White Sea ; Madeira ; Mediter* 

 ranean. 



Autolytus macrophthalma (Marenzeller). 



1875. Proceraea macrophthalma. Marenzeller, p. 37. 1879. P.m. 



Langerhans, p. 579. 1886. A. m. de St.-Joseph, p. 226. 



A number of specimens found in Clew Bay are referred to this species 

 on account of the structure of the proboscis and the exceptionally large 

 eyes. It is practically impossible, except by the latter character, to separate 

 this species from A. luxurians, also described by Marenzeller. The latter 

 species has been regarded by several workers as identical with A. auran- 

 tiaeus (Claparede). The unusual length of the antennae and anterior cirri in 

 A. luxurians is not a distinctive character, as living specimens from Clew Bay 

 had cirri nearly 5 mm. long, whilst Marenzeller gives 2"4 mm. as the length for 

 A. luxurians. The structure of the crown of teeth and of the setae is 

 similar in both species, and the only character which seems to distinguish 

 them is that A. luxurians has small reddish-brown eyes, whilst those of 

 A. macrophthalma are large and red. 



Habitat. — Clew Bay — Dredged on 3 occasions, in 7-26 fms. 



Distribution. — Torquay ; north coast of France ; Madeira ; Adriatic. 



Autolytus brachycephala (Marenzeller). 

 PI. V, fig. 10. 



1874. Proceraea brachycephala. Marenzeller, p. 54. 1879. P. b. 



Langerhans, p. 580. 



The specimens which I refer with some doubt to this species show con- 

 siderable differences from those described by Marenzeller, and to a lesser 

 degree from those of Langerhans. The tentacular cirri and the cirri of the 

 2nd segment are much longer. There is a conspicuous pair of epaulettes 

 behind the head, which are not noted by Marenzeller or Langerhans. As 



«.I.A. proc, vol. xxxi,, F $7 



