160 
E. MANCUIN 
40. — TV. subsilissima, X 960. 
4 K — TV. anglica, X 960. 
42. —i TV. crpptocephala, X 960. 
43. — Idem, fo., X 960. 
44. — Idem, var. intermedia, fo., X 960. 
45. —. TV. cryptocephaloides, X 960. 
46. — TV. Peterseni, X 960. 
47. — TV. radio sa, var. tenella, X 960. 
Planche III 
46. — TV. rhpnchocephala, X 960. 
49. — N. radiosa, fo. intermedia, X 960. 
50. i —• TV. simulala, X 1.400. 
51. — Pinnularia appendiculata, fo. constricta, X 960. 
52. — P. subcapitata, var. paucistriata, fo. lata, X 1.400. 
53. — P. legumcn, fo., X 960. 
54. — P. microstauron, fo. biundulata, X 960. 
55. — Idem, fo. minutissima, X 960. 
56. — P. subsolaris, fo. mutabilis, X 960. 
57. — P. borealis, var. brevlcostala, fo. elongata, X 960. 
58. — P. gibba, var. parva, fo. minutissima, X 1.400. 
59. — P. parva, var. Lagerstedlii, fo. mterrupla, X 1.400. 
60. — P. Allorgei, X 435. 
61. — P. slreptoraphe, fo. minor, X 260. 
62. — P. viridis, fa., X 960. 
63. — Amphora sp., X 1.400. 
64. — Cÿmbella gracilis, X 1.150. 
Planche IV 
65. — Pinnularia brevicostata, var. inlermedia, X 960. 
66. — Cpmbella Cesafi, fo. minor, X 1.400. 
67. — C. perpusitta, var. azorica, X 960. 
68. — Comphonema constrictum, fo., X 1.400. 
69. — G. parvulum, fo. affine, X 1.400. 
70. —• Nitzschia lhermalis, fo. ad var. intermedia, X 960. 
71. — TV. vilrea, var. salinarum, X 960. 
72. — /V. dissipata, X 960. 
73. — TV. amphibia, fo. abbreviala, X 960. 
74. — TV. commuais, var. oblusa, X 1.400. 
75. — TV. fonticola, X 960. 
76. —'TV. Mongudloni, X 96Q. 
77. — TV. palea, fo. ad var. tenuirostris, X 960. 
78. — Idem, fo. ditbia, X 960. 
79. — TV. Ruttneri, X 960. 
80. — TV. Clausii, X 960. 
81. — Idem, fo,. curvirostrata, X 1.400. 
82. — Idem, fo. ?, X 960. 
83. — TV. oblusa, var. brevissima, X 960. 
84. — TV. ignorata, X 960. 
85. — Surirella delicatissima, fo. tenuissima, X 1.400. 
86. — 5. oval'ts, var. apiculata, X 1.400. 
