Polychaeta. 283 



Pl,ATE XLIV. 



Fig. 1. — Prostomium with ceratophore and antennae, and first elytrophoral 

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

 appearance. 



Fig. 2. — Dorsal penicillate seta of O. 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 crassicirris. 



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



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



Fig. 8.^ Seta of Vanadh antarctica, x 3d. 



Plate XLV. 



Fig. 1. — Head of Typosyllis hyaJina with proboscis extruded; t = tooth seen 

 through dorsal wall of proboscis. 



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

 pigmentation. 



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



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



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



Fig. 6. — Uncinus of TJielepva antarrticus^, X 3d. 



Plate XLVI. 



Fig. ] . — Anterior end of Vanadis antarctica (?) from below ; I — lens ; 

 1, 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 antarctica, x 4d. 



