(jattij Murtue Luhorutori/, St. Anilrews. l.'VJ 



spparatiii}: tlio widened and more 1)()ldly serrated base; from 

 tlie more niiuutely serrated terminal rej^ion. The strueiurc 

 of tliose witli tlie J?aj), however, (h)es not differ from that of 

 the Plymouth form. Thf hnds presented a simihar con- 

 dition, and the serrations of the basal region of the tip were 

 bolder than the distal. In some of the unaltered tips slij^ht 

 hollows at the site of the gap indicated a change. Further, 

 in addition to tho foregoing, a series of simple tapering 

 bristles without evident wing were present. 



Off the Hebrides. 

 Two well-developed opercula of a flattened finger-naiT 

 sliape. Series of rounded eye-specks. No enlargement of 

 the terminal processes of the branchial filaments ; long body ; 

 eight j)airs of anterior bristles, (.'ollar-bristles aj)parently 

 agreed with the St. Andrews form. 



S.E. of the Isle of May. August. 32 fathoms. 



Two opercula, circular and rather small. Noenlargem'^nt 



of the tips of the branchial filaments, and the pinna? c()m|;ara- 



tively short. Ova in some with comparatively short bodies. 



Collar-bristles apparently similar to those from St. Andrews, 



Shetland. 

 Two opercula (small and round) in some, others have 

 none. The examples are small. Collar-bristles siuiilar ii>- 

 those from St. Andrews. 



Mora>/ Frith (dredged). 

 Well-formed thin opercula. In another none. Xo 

 enlargement of the tips of the branchial filaments in either. 

 The collar-bristles in these forms agree with those from 

 St, Andrews. 



Aberdeen Bay. August. 

 Well-marked opercula in all. No enlargement at the tips 

 of the branchial filaments. Collar-bristles indistinct, but 

 apparently agreeing with those from St. Andrews. 



H.M.S. ' Triton ' and ' Knight Errant.* 530 and 87 fms. 

 An operculum is present in these as a rule, but it is a 

 very thin circular plate — so thin as to be distinguished with 

 diQiculty in certain examples. No eggs, sperms, buds, or 

 larvae were seen in th<'se specimens in August, Numerous 

 roccolitlis occurred in their stomachs. The specimens from 

 both ships had exactly tlie same structure iu the collar- 

 bristles as at St. Andrews. 



