Polychaeta. 283 



Pl,ATE XLIV. 



Fig. 1. — Prostomium with ceratoi)hore and antennae, and first elytrophoral 

 segment of Gattyana cristata. The first dorsal crest has a rounded knob-like 

 api^earance. 



Fig. 2. — Dorsal penicillate seta of G, cristata, x 3c. 



Fig. 3. — Ventral seta of same, x 3a. 



Fig. 4. — Crenulate scabrilla of elytra of same, x 3c. 



Fig. 5. — Head of Mahngrenia crassidrris. 



Fig. 6. — Ventral seta of same, x 3d. 



Fig. 7. — Seta of Phyllodoce madeirensis, x 3c. 



Fig. 8. — Seta of Vanadis antarctwa, x 3d. 



Plate XLV. 



Fig. 1. — Head of TyposylUs hynJima with proboscis extruded ; t = tooth seen 

 through dorsal wall of f)roboscis. 



Fig. 2. — An anterior segment (about 19th) of same to show the iiattern of 

 pigmentation. 



Fig. 3. — Dorsal cirrus of 19th segment of same. 



Fig. 4. — Seta from one of the anterior ventral fascicles of Arida margwata, x 3d. 



Fig. 5. — Uncinus of Nicolea agassizi, x 3d. 



Fig. 6. — Uncinus of TJieJepus a.ntarrticus, X 3d. 



Plate XLVI. 



Fig.]. — Anterior end of Vanadia ardardica (?) from below; 1 - lens; 

 i, 2, 3 = tentacular cirri ; r. s. = receptacula seminis. 



Fig. 2. — Coronary papillae on the extruded proboscis of same. 



Fig. 3. — Anterior end of Bliodine loveni from above. 



Fig. 4. — Nineteenth setigerous segment of same from above. 



Fig. 5. — Uncinus of same, x 3d. 



Fig. 6. — Uncinus of Ereutlio antardica, X 4d. 



