302 ANNELIDA POLYCH^TA ANDREWS. 



Fig. 25. Ventral view of posterior end, living specimen. 



Fig. 26. Parapodium, witli brancbia. 



Fig. 27. Large seta of fiftb somite and common book seta of PoJydora conunensalis. 



Other figures publisbed in tbe American Naturalist, 1891. 

 Fig. 23. Large and minute setai of Ophelina agilis, sp. uov. 



Plate xvi. Axiothea mucosa, sp. nov. 



Fig. 29. Entire animal, from living specimens. 



Fig. 30. Side view of anterior end, from living specimens. 



Fig. 31. Ventral view of anterior end, living specimens. 



Fig. 32. Dorsal view of anterior end, living specimens. 



Fig. 33. Posterior end, living specimen. 



Fig. 34. Tube in sand, old orifice stopped by jelly mass containing eggs, new orifice 



at end of a side brancb of tube. 

 Fig. 35. Four setae. 



Plate xvii. Petaloproctus sociaUs, sp, nov. 



Fig. 36. Entire animal, live specimen. 



Fig. 37. Dorsal view of anterior end, live specimen. 



Fig. 38. Posterior end, live specimen. 



Fig. 39. Ventral view of anterior end. 



Fig. 40. Tube in sand, sbowing coiled part beneatb surface. 



Fig. 41. Four seta?. 



Plate xviii. Ammochares a'dificator, sp. uov., and Loimia turgida, sp. nov. 



Fig. 42. Entire animal, living specimen. 



Fig. 43. Oral surface witb expanded braucbi;ie, diagraramatically drawn from living 



specimens; D, dorsal; V, ventral. 

 Fig. 44. Seta and uncinus. 



Fig. 45. Tube in sand, spiudle-sbaped near surface ; of leathery consistence. 

 Fig. 46. Young Loimia turgida in fioating, transparent tube. 

 Fig. 47. Base of tentacle of adult L. turgida. 

 Fig. 48. Setse of adult L. turgida. 

 Fig. 49. Uncinus of adult i. turgida. 



