158 LIVERPOOL MARINE BIOLOGY COMMITTEE REPORT. 



Ops, spp. (?). 



Carrington describes two new species of a genus Ops. 

 I am in some doubt as to the name as the genus does not 

 seem to be recognised by more recent investigators. 



Amphitrite ventilahrum, Kiss. 



Mentioned by Byerley as often confounded with A, 

 {Pectinaria) auricoma. 



No example was dredged by the L. M. B. C. Sabella 

 ventilahrum of Carrington's list is probably the same form. 



Family. — Chlor^mid-si 



Siphonostomwn gelatinosum, 

 Dr. Herdman informs me that he found and identified 

 an example of this species at Hilbre, on July 11th, 1885. 

 The worm was unfortunately not preserved. 



Family. — Terebellid^. 



Terehella conchilega, Pallas. 

 This common form was obtained plentifully at Hilbre. It 

 is recorded by Byerley and by Carrington as having been 

 found generally about the shore. A number of specimens 

 were also obtained from Port Erin, Isle of Man. 

 Terehella crysodon, Montagu. 

 Terehella constrictor, Montagu. 

 These forms are mentioned by Carrington, but were not 

 found by the L. M. B. C. 



Terehella nehulosa, Grube. 



Found abundantly in the dredge off Port Erin, Isle of 

 Man, its muddy tubes coiled in the interior of large lamelli- 

 branch shells, &c. 



Recorded from Hilbre by Byerley. 



Thelepus circinatus, Fabricius. 

 One specimen of this form was obtained from Penmaen- 



