A. K VerriU — JVeir En</hind Annelldd. 324c 



Figure \d. — The same. Posterior segments unci caudal cirri, enlarged eight diameters. 



Figure le. — The same. Transverse section of a segment. 



Figure \g. — The same. Set;e from the ventral fascicle, much enlarged: (-, one with 

 jointed and hooked tip; /;', one with jointed tip, acute at the end. 



Figure Is. — The same. A scale, enlarged. 



Figure 2. — The same. Several forms of setaj from the ventral fascicle : a, a', simple 

 acute setae, with partial whorls of spinules; h, one with short, hooked terminal 

 piece, bidentate at tip and not distinctly jointed ; c, o', sette with shorter and 

 longer, jointed, acute tips. 



Figure 3. — Sthenelais pida V. Dorsal view of head and anterior part of body, enlarged 

 four diameters. From an alcoholic specimen. 



Figure ^a, 31 — The same. Dorsal and ventral views of the posterior segments and 

 caudal cirri of a living specimen, mneh enlarged. Newport, low w.ater, Aug. 8, 

 1880. 



Figure 3c. — The same. A scale, enlarged. 



Figure 3d. — Portion of the edge of the same scale, more enlarged. 



Figure 4. — Pholoe minuia. Head and anterior segments, much enlarged. Newport, 

 1880. 



Figure ia, ih. — The same. Scales, much enlarged. 



Figure 4c. — The same. One of the parapodia, much enlarged. 



Figure 5. — Sigalion arenicola V. Head and anterior segments, dorsal view. The 

 scales of the first pair have been removed ; enlarged eight diameters, from an 

 alcoholic specimen. 



Figure 5a. — The same. One of the scales, enlarged twenty-five diameters. 



Figure 56. — The same. One of branched appendages from the outer border of the 

 scale, much enlarged. 



Figure 5c. — The same. One of the parapodia, enlarged : ds, dorsal setse ; a, simple 

 spinulated setaj of the ventral fascicle ; h, c, different forms of compound setae, 

 with jointed, acute tips ; d, e, compound setas with bidentate hooked tips ; e', 

 compound setae with jointed tips, hooked at end ; v, v', different forms of capillary 

 setiv in lower part of ventral fascicle, some with joints distally. Original speci- 

 men from Nantucket Seund, 1875. 



Figure 5d. — The same. Some of the setfc more enlarged, lettered as in fig. 5c, en- 

 larged 250 diameters. 



Figure 6. — Polynoe (Eunoa) spinulosa V. Portion of the edge of one of the scales of 

 the original specimen, from off Sable I., N. S., enlarged seventy-five diameters. 

 The drawings are mostly from preserved specimens, by J. H. Kmerton. The appen- 

 dages and setae are camera-drawings from specimens mounted in glycerine-jelly. 



Plate VIII. 



Figure X.—Ti-avisia carneu V. Dorsal view, enlarged nine diameters. 



Figure la. — The same. Side view of one of the middle segments, more enlarged. 



Figure 2 — Arenicola marina L Side view, natural size. 



Figure 3. — ClittUio irmrata V. Enlarged six diameters. 



Figure 3a. — 'Ihe same. One of the fascicles of set*, much enlarged. 



Drawn from life: figures 2-3ft. by J. H. Emerton ; 1, la, by J. 11. hSlake. 



