82 MELINNA. 



The body is comparatively small, about 12 mm. in length and 2*5 mm. at its widest 

 part, slightly diminished in front and gently tapering to the tail. As in Malmgren's 

 figure, eight to twelve segments follow the bristled region, but in some examples two 

 thick short subulate cirri occurred at the tip, and they seemed to be larger than the 

 dorsal cirri in front of them and less clavate in outline, as when viewed from above the 

 dorsal cirri are clavate, with a narrow base and rounded or bluntly ovoid tips. The last 

 setigerous process is followed by a short dorsal cirrus, the succeeding cirri having a more 

 elongated stalk and a more distinctly enlarged tip. The ventral uncinigerous processes 

 are bluntly conical papillge, a considerable ridge intervening between them and the 

 dorsal cirri. 



The bristles (Plate CXXIV, fig. 8 b) are pale golden, almost devoid of wings, and 

 have long, finely tapered tips with a trace of a curve. 



The hooks (Plate CXXIV, figs. 8 and 8 a) commence on the fourth segment, have a nearly 

 straight posterior outline, a slightly sinuous ventral margin which curves upward at the 

 prow anteriorly, and four to five teeth, the first being smaller than the second, the third 

 and fourth larger than the second, the fifth stouter than the others, and separated 

 along the anterior margin by a gulf from the rounded prow, the lowest tooth being the 

 stoutest. The hook has a different shape from that of A. Malmgreni from the greater 

 depth posteriorly — that is, from the angle to the front. The posterior hooks are 

 smaller but of similar structure. 



The tube consisted of secretion covered with soft, grey mud, and in some the 

 secretion adhered firmly to the surface of the annelid. 



Reproduction. — The Norwegian examples had large ova in July. 



A form dredged by Dr. Gwyn Jeffreys off the Hebrides (Plate CXXIV, figs. 9 and 

 9 a— bristle and hook) in 1866 is devoid of palmulge, and has about fourteen bristle- 

 bundles on each side, but this number is uncertain, for the only example is pulpy and 

 imperfect, the tentacles are smooth and club-shaped, and the ventral glandular bars of 

 the segments very distinct. The bristles (Plate CXXIV, fig. 9) offer no feature of note, 

 being the ordinary winged forms. 



The hooks (Plate CXXIV, fig. 9 a) 1 lean in their outline rather to those of Melinna than 

 to those of Amage, yet differ characteristically from both. They are somewhat triangular, 

 with a narrow crown and five teeth, the fifth being shorter and broader from the form of 

 the " bite " between it and the prow, which is somewhat abruptly rounded. The process 

 for the ligament is carried nearly to the base posteriorly. The " bite " is somewhat larger 

 than shown in the R.S.B. figures. 



The Amage adspersa of Grube has hooks with only four teeth. It occurs at Madeira 

 (Langerhans). 3 



Genus CXLIIL— Melinna, Malmgren, 1865. 



Cephalic lobe smooth, without an elevated frontal part, palpode rudimentary (Fauvel). 

 Anterior margin transverse. Buccal segment produced longitudinally at the sides of the 



1 Vide also l Trans. Boy. Soc. Edin./ vol. xxv, pi. xiii, figs. 10 and 10 a. 



2 'Zeitschr. f. wiss. Zool./ Bd. xxxi, p. 261, Taf. xv, fig. 19. 



