EXPLANATION OF PLATE XIII. 
Be A eet exigua, n. sp. 
dubia, n. sp. — 83. 
— te --- truncata, n. sp. — 84. 
— 78&78b, oblonga, LL. sp. — 85. 
— 79. ... robusta, n. ep., 79b and 79 c; half|_— 86. 
frustules. — 87. 
— 80. ...  spectabilis, n. sp.; 80; do. var. B,|— 88. 
80 c; do. var. y; 80 a; do. view} — 89. 
showing the complexstructureofthe | 90. 
species; 80¢; do.detachedsegment.|— 91. 
— 81,816, 81 
; ¢, 81d, & » ...Proteus, n. sp. 
81 e, 
Fig. 82. Amare lyrata, n. sp. 
Milesiana, n. sp. 
elongata, n. sp. 
quadrata, n. sp. 
excisa, n. sp. 
nobilis. 
Arcus, Greg. 
Grevilliana, Greg. 
fasciata, n. sp. 
complexa, n. sp. 
All the above are magnified 400 diameters. 
