684 MR CUNNINGHAM AND MR RAMAGE ON POLYCH^ETA SEDENTARIA. 



Fig. 24. Amphitrite cirrata, lateral view. 24 a, capillary chseta ; 24 b, uncinus. 

 Fig. 25. Terebclla Danielssenu 25 a, capillary chaeta ; 25 b, uncinus. 

 Fig. 26. Lanice conchilega. 26 a, uncinus. 



Plate XLIV. 



Fig. 27. Scione maculata. 27 a, posterior end, magnified; 27b, chaeta; 27 c, uncinus. 



Fig. 28. Ereutho Smitti, ventral surface. 28 a, chseta; 28 b, uncinus. 



Fig. 29. Terebellides Strvemi. 29 a, chaetae ; 29 b, uncinus. 



Fig. 30. Larva of a species of the Terebellidae. 



Fig. 31. Sabella penicillus. 31a, ventral view of anterior end; 31b, thoracic chaeta ; 31c, 



abdominal chaeta; 31 d, uncini. 

 Fig. 32. Chone infundihdiformis. 32 a, dorsal surface, anterior end. 



Plate XLV. 



Fig. 32 b, 32 c, thoracic chaetae. 32 d, thoracic uncinus ; 32 e, abdominal seta ; 32 f, abdominal 



uncinus. 

 Fig. 33. Amphicora Fabricia. 33 a, chaeta and uncinus. 

 Fig. 34. Myxicola Steenstrupi. 34 a, chaeta and uncinus. 

 Fig. 35.' Filigrana implexa, ventral surface. 35 a, larva. 



Fig. 36. Pomatocerus triqueter. 36 a, abdominal chaeta; 36 B, thoracic chaeta; 36 C, uncinus. 

 Fig. 37. Spirorbis borealis. 37 b, uncinus. 

 Fig. 38. Spirorbis lucidus. 38 a, chaeta of 1st thoracic somite ; 38 B, chaeta of 2nd thoracic somite ; 



38 c, chaeta of abdomen. 



Plate XLVI. 



Fig. 37 c, Part of a string of ova of Spirorbis borealis, from the shell; June 15, 1887; Zeiss, 



CC. Oc. 2. 

 Fig. 39. Trophonia plumosa, anterior end, with the buccal somite fully protruded, as it often is when 



the animal is killed with spirit — a, branchiae; b, tentacles; c, mouth. 38 a, dissection of 



Trophonia plumosa — a, inverted buccal somite ; b, retractor muscle ; d, nephridia ; e, e, 



ovaries ; /, heart ; g, dorsal pseudhaemal vessel ; h, ventral psuedhaemal vessel ; i, intestine. 



38 b, from the epithelium of the nephridium, Zeiss, CC. Oc. 3. 

 Fig. 40. Flabelligera affinis. a, branchiae ; b, tentacles ; c, c, nephridia ; d, heart ; g, intestine ; h, setae 



of notopodium ; i, uncini of notopodium ; j, glandular papillae. 40 A, glandular papillae, 



X 400 ; 40 b, uncinus of notopodium. 



Plate XLVII. 



Fig. 41. Nicomache lumbricalis, anterior end, lateral view. 41 a, posterior end, lateral view; 41b, 



uncinus. 

 Fig. 42. Axiothea catenata, anterior end, lateral view, proboscis protruded. 42 a, anterior end, 



ventral surface ; 42 b, anterior end, dorsal surface ; 42 c, posterior end ; 42 d, chaeta ; 



42 e, chaeta ; 42 f, uncinus. 

 Fig. 43. Capitdla capitata, anterior end. 43 a, chaeta; 43 b, uncinus. 43 c, copulatory armature — 



a, i^ouch. 43 d, corpuscles of body-cavity, after treatment with acetic acid, Zeiss E, Oc. 3. 

 Fig. 44. Notomastus latericius, anterior end, dorsal surface, proboscis everted. 44 A, same, lateral 



surface ; 44 B, uncinus. 



