Dr. Johnston on the British Nereides. 22 J 



2. Ph. maculata, the body marked with dark-brown spots 

 in three rows;, branchial leaflets somewhat heart-shaped. 

 Plate VII * fig. 1—3. 



Mereis maculata, Linn. Syst. 1086. Mull. Zool. Dan. prod. p. 217. Bosc^ 

 Vers, i. p. 171. — Phyllodoce pulchra, Johnston in Zool. Jourv. iv. p. 54. 

 — The figure of Easier {Opusc. Subs. i. p. 14. tab. iv. fig. 1.) may pos- 

 sibly be intended for a representation of this species. 

 Hab. The shore at and within tide marks. Frequent on the coast of Ber- 

 wickshire. 



Desc. Worm sometimes 4 inches long, slender, depressed, 

 tapered a little towards each extremity, yellowish, with a row 

 of dark-brown spots along the back, and the sides spotted 

 w ith the same colour ; ventral surface paler, with a median 

 row of small rather distant spots, and a series of larger ones 

 on each side at the base of the feet. Head bluntly pointed, 

 armed in front with four white conical antennae ; eyes black. 

 Post-occipital segment with four pairs of setaceous tentacular 

 cirri, of which the two anterior are the shortest : on each side 

 of the other segments there is an oval or somewhat heart- 

 shaped branchial lamella, with a brown spot in its centre, and 

 supported on a very short spotted stalk : beneath them are 

 the feet, each foot consisting of two papillary processes, the 

 superior furnished with a brush of retractile bristles of the 

 usual character. Anal segment terminated with two short co- 

 nical styles. 



3. Ph. bilineata, slender, pale greenish-yellow, with a con- 

 tinuous dark line drawn down each side at the insertions of 

 the feet. Plate VI. fig. 7—10. 



Nereis maculata? Fabr. Faun. Groenl. p. 298. Turt. Gmel. iv. p. 88. 



Hab. On oysters from Preston-pans in the Firth of Forth. Berwick Bay, 

 rare. 



Desc. From 2 to 3 inches long, very slender, serpentine, 

 somewhat narrowed in front, more so towards the tail, of a 

 pale greenish-yellow colour, with a dark continuous line along 

 each side, rendered sinuous by the emarginations at the junc- 

 tion of the segments, which are numerous and quadrangular. 

 Head ovoid ; eyes two, placed backw^ards ; antennce four, un- 

 equal, placed in a stellate fashion round the orifice of the 

 mouth : tentacular cirri rather short, unequal : branchial la- 

 * PI. VII. will be given in the Supplement to the present volume. 



