2 Prof. M'Iiitosli'.s Xotesfrom the 



aiul S. pnvonina, Sabel/a reniformis and <S. aaxicava, and 

 FaOricia amjihicora and F. johnstoni. In Malm<;ron'a 

 ' Annulata l*olyclia4a/ of Spitzlicrjioii, Grccnlaiid, Icclaiul, 

 and Soaiulinavia, nineteen ^ahellids (iiiclu(lin<; Mijuicola) 

 are entered, and sonic of these appear to be j)nrely nortliern 

 in distrd)Ution, and do not oecur in onr waters. Only six 

 are entered by Dr. Johnston in the * Catalogne of Worms 

 in the British Mnsenni ' (18G5), bnt two refir to the same 

 form, viz., Sabella ]/e)iici//us, and another {S. saviynii) is 

 nneertain. 



Six sjiecies, including Myaicnla sfeenstrvpi, are recorded 

 by Tlieel* (1879) from Nova Zerabla. Langerlians (1880) 

 ionnd ten species at ^ladcira. Aljout twenty-seven species of 

 Sabellids occur in the laborious memoir of Miss Katherine 

 Bush t from the vast area of the Pacific. Fifteen species 

 occur in the careful ' Survey of Clare Island, on the rich 

 \Vest Coast of Ireland' by jNIr. Southern (191 1), several not 

 having hitherto been found in Britain. Thirteen species of 

 Sabellids are entered by Prof. Fauvel (1914) in his fine work 

 on the Polychaeta procured by the Prince of Monaco in his 

 yaclits ' Ilirondelle* and 'Princess Alice.' In the recent 

 (1915) list of the Polycha?ta procured at Plymouth by 

 Dr. Allen, thirteen species are entered, and a few are ex- 

 clusively southern forms. Comparatively few species {e.g., 

 from two to five) pertaining to this family, as a rule, occur 

 in local catalogues in the British area. These will be 

 elsewhere alluded to. Moreover, it is perhaps more difficult 

 to separate the Sabellids by their bristles and hooks than, 

 for instance, the Terebellids, and coloration disappears, as a 

 ride, in spirit-specimens. 



The first form is the widely distributed Sabella penicillus, 

 I. \Vlien the branehiie of this species are thrown off' the 

 cephalic region presents a truncated surface, in the centre of 

 which is a frilled eminence, which, when carefully inspected, 

 shows two lateral membranous wings, which unite in the 

 middle line below and send a process ventrally between the 

 two great ventral lamime; whilst the upper edges pass above 

 the mouth in a series of short frills. In the mid-dorsal line 

 over the mouth is a triangular flap with an acute apex, the 

 base of which is grooved dorsally, the whole resembling an 

 epistomc. Dorsally the cephalic plate is deeply grooved by 

 the dorsal furrow, the firm and thick edge of the rim which 

 carries the branchiae being severed and neatly curved on 



* Kong). Sv. Vet.-Akad. Hand!. Bd. 16, No. •% p. 65. 

 t 'Harriinan Expedition to Alaska' (Xew York, 1905). 



