Dr. Johnston on the British Annelides. 371 



cea, one of them measuring 7 inches in length, which exceeds 

 considerably any specimen I had previously seen ; 2. Nephtys 

 margaritacea ; 3. Glycera alba or Nereis alba of Muller; 

 4. Fragments of a Psamathe, probably the same as P.fusca, 

 but greatly larger than my Berwickshire specimens; 5. Phyl- 

 lodoce lamelligera ; and Mr. Forbes mentioned to me that he 

 had also met with 6. Phyllodoce viridis. 



In other families there were specimens of Cirrhatulus me- 

 dusa and of Amphitrite alveolata, and several of a marine Lum- 

 bricus, but so much injured and broken that I did not attempt 

 to ascertain the species. Of the family Lumbricidce there was 

 another member, which first of all attracted my attention by 

 the remarkable development of the anterior bristles that form, 

 by their convergence, a large brush apparently terminating 

 the head. This worm probably belongs to the genus Tro- 

 phonia of Audouin and Milne-Edwards, but I know this ge- 

 nus only by the incidental and slight notice taken of it in their 

 work on the Annelides errantes ; and have seen no characters 

 either of it or of its species. 



Trophonia? Goodsirii. 

 Plate XI. fig. 1—10. 

 Desc. Worm from 3 to 4 inches long, as thick as a swan's 

 quill, distinctly annulated, tapering insensibly backwards to 

 an obtuse point, sub cylindrical, but so flaccid after maceration 

 in spirits that the sides almost fall together, of a uniform 

 earthy brown colour or blueish underneath, rough with nu- 

 merous granulations which are somewhat larger on the dorsal 

 than on the plane ventral surface. The cuticle or outer skin 

 is easily separable from the body, which then appears of a dull 

 leaden blue colour, more or less iridescent. Front armed 

 with a brush of long hair-like bristles. Segments between 50 

 and 60, homologous, narrower than broad, granulous, some- 

 what puckered and thickened on the sides, on which there are 

 two distant bundles of non-retractile bristles, but no papillous 

 "eet. First segment very small, and as it were drawn within 

 the second : mouth subterminal, circular, edentulous, and un- 

 furnished with organs of any kind. The second segment is 

 rather less than the third, and from its anterior edge there 



