PLATE CXXXVIII. 
Fic. 
1. Pregeria remota, Southern, from St. Andrews. Enlarged. 
2. Sabellides octocirrata, Sars. (after Malmgren). Enlarged. 
3. Tenth foot of Spio martinensis, Mesmil. xX oc. 2, obj. A. 
3a. Twentieth foot. x oc. 2, obj. A. 
4. Tip of branchial filament of Branchionma Kollikert, Claparéde (var. of B. vesiculosa), 
with eyes. xX oc. 2, obj. A. 
5. Anterior hook of Jasmineira caudata, Langerhans. X oc. 4, obj. D, with 2-in. draw- 
tube. 
5a. Posterior hook. x oc. 4, obj. D, with 2-in. draw-tube. 
6. Anterior hook of Amphitrite grenlandica, Mern. X oc. 4, obj. D, with 2-in. draw- 
tube. 
6a. Posterior hook. xX oc. 4, obj. D, with 2-in. draw-tube. 
7. Tips of four bristles (second and twenty-third) of Hhlersia ferruginea, Langerhans 
(after Langerhans). 
8. Simple slender bristle (anterior) of Asclerocheilus intermedius (De St. Joseph). 
x oc. 4, obj. D, with 2-in. draw-tube. 
8a. Sickle-shaped bristle of the second segment. x oc. 4, obj. D, with 2-in. draw-tube. 
9 and 9a. Posterior hooks (at tail) of Huchone rubrocincta, Malmgren. x 360 diam. 
10. Powerful hook of the fifth segment of Polydorw ceca, Girst., from Blacksod Bay. 
X oc. 4, obj. D. 
10a. Minute penniform bristle accompanying the former. x oc. 4, obj. D. 
106. Ordinary winged bristle of the anterior region. x oc. 4, obj. D, with 2-in. draw- 
tube. 
11 and lla. Large hooks of the fifth foot of Polydora giardi, Mesnil. x oc. 4, obj. D, 
with 2-in. draw-tube. 
12. Portion of the surface of the body of Macrochexta clavicornis, Sars, to show the 
processes. XX oc. 4, obj. A, with 2-in. draw-tube. 
13. Lateral view of Hauchiella tribullata, McIntosh (after Wollebzk). Shghtly enlarged. 
13a. Anterior end of the same with its frills and tentacles (after Wollebek). Enlarged. 
13 6. The three nephridial discs of the foregoing after the same author. Hnlarged. 
14. Posterior transparent hook of Spiochetopterus typicus, Sars. XX 360 diam. 
15 and 15a. Hooks of Spirorbis granulatus, L., the latter seen obliquely so as to show the 
bifid inferior process. X 360. 
16. Anterior hook of Spirorbis nuilitaris, Claparede. x 360. 
