316 PROCEEDINGS OF THE ACADEMY OF [April, 



Nothria pallida, figs. 24-28. 



Fig. 24. — Anterior view of 2d parapodium, X 24. 



Fig. 25. — Posteiior view of 4th parapodium, X 24. 



Fig. 26.— Hooded crochet from IV, X 360. 



Fig. 27.— Pectinate seta from LXXV, X 440. 



Fig. 28.— End of crochet from XXV, X 250. 

 Plate XVI. — Marphysa conferta, figs. 29-34. 



Fig. 29. — Head and first four segments. 



Fig. 30. — Parapodium X with gill, X 56. 



Fig. 31. — Parapodium L, X 56. 



Fig. 32. — Compound seta from X, X 440. 



Fig. 33. — Pectinate seta from L, X 440. 



Fig. 34.— Crochet from L, X 360. 

 Nothria pallida, figs. 35-37. 



Fig. 35.— Parapodium L, X 24. 



Fig. 36. — Mandibles of cotype (station 4,401) from the venter, X 33. 



Fig. 37. — Maxillae of same from the dorsum, X 33. 

 Nothria species ?, figs. 38-40. 



Fig. 38.— Parapodium XXV, X 24. 



Fig. 39. — Compound crochet from III, X 440. 



Fig. 40. — End of simple crochet from XXV, X 250. 

 Nothria hiatidentata, figs. 41-50. 



Fig. 41. — Anterior end from the dorsum, X 5. 



Fig. 42. — Anterior aspect of 2d parapodium, X 24. 



Fig. 43. — Same of 4th parapodium, X 24. 



Fig. 44. — Parapodium L, X 17. 



Fig. 45. — Tip of a much worn large spine from III, X 250. 



Fig. 46. — End of slightly worn crochet from IV seen in { face, X 250. 



Fig. 47. — End of a pectinate seta from IV, X 440. 



Fig. 48. — End of a large hooded crochet from L, X 250. 



Figs. 41-48 are all drawn from a cotype (station 4,387j. 



Plate XVII.— 



Fig. 49. — Ventral view of mandibles of cotype, X 24. 



Fig. 50. — Dorsal view of maxillae of same, X 24. 

 Onuphis parva, figs. 51-57, all from cotype (station 4,446). 



Fig. 51. — Posterior aspect of parapodium III, X 56. 



Fig. 52. — Anterior aspect of parapodium V, X 56. 



Fig. 53. — Same of parapodium XXV, X 56. 



Fig. 54. — End of compound crochet of IV, X 600. 



Fig. 55.— Pectinate seta from XXV, X 600. 



Fig. 56.— End of hooded crochet from XXV, X 600. 



Fig. 57. — Slender crochet without guard from L, X 600. 

 Onuphis nebulosa, figs. 58-68, all from cotype (station 4,454). 



Fig. 58. — Anterior aspect of parapodium III, X 33. 



Fig. 59.— Same of V, X 33. 



Fig. 60.— Same of L, with gill, X 33. 



Fig. 61. — End of a compound crochet from II, X 360. 



Fig. 62. — End of a compound crochet from VI, X 360. 



Fig. 63. — End of a transition compound seta from X, X 440. 



Fig. 64. — Pectinate seta from X, X 440. 



Fig. 65. — Transition hooded crochet from XV, X 440. 



Fig. 66.— Hooded crochet from LXXV, X 440. 



Fig. 67. — Ventral view of mandibles, X 33. 



Fig. 68. — Dorsal view of maxillae, X 33. 

 Onuphis vexillaria, figs. 69-76. 



Fig. 69. — Anterior aspect of parapodium III, X 24. 



Fig. 70.— Same of V, X 24. 



Fig. 71.— Same of L with gill, X 24. 



Fig. 72.— End of compound crochet from IV, X 440. 



Fig. 73. — Pectinate seta from a posterior segment, X 440. 



Fig. 74.— Tip of a crochet from L, X 360. 



