Part 4

39. Idyia somewhat older than Fig. 37 36

40. Idyia still older 36

41. Young Bolina in stage resembling Pleurobrachia 37

42. Young Bolina seen from the broad side 37

43. Young Bolina seen from the narrow side 37

44. CYANEA ARCTICA 40

45. Scyphistoma of Aurelia (Agassiz) 41

46. Scyphistoma older than Fig. 45 (Agassiz) 41

47. Strobila of Aurelia (Agassiz) 41

48. Ephyra of Aurelia (Agassiz) 42

49. AURELIA FLAVIDULA seen in profile (Agassiz) 42

50. Aurelia seen from above (Agassiz) 43

51. CAMPANELLA PACHYDERMA 44

52. The same from below 44

53. TRACHYNEMA DIGITALE 45

54. HALICLYSTUS AURICULA 46

55. Lucernaria seen from the mouth side 47

56. Young Lucernaria 48

57. Hydrarium of EUCOPE DIAPHANA 50

58. Magnified portion of Fig. 57 50

59. Part of marginal tentacles of Eucope 51

60. Young Eucope 51

61. Adult Eucope, profile 51

62. Quarter-disk of Fig. 60 51

63. Quarter-disk of Eucope older than Fig. 62 52

64. Quarter-disk of adult Eucope 52

65. OCEANIA LANGUIDA just escaped from the reproductive calycle 53

66. Same as Fig. 65 from below 53