— 
INDEX. 
Names of Authors are in capitals, thus . . ..... . a a BRELESTEIN 
Names of Geological formations or ages are in roman type with an initial pee thus . Trias. 
Names of Places likewise, thus . . . . c arnt ts en nV ESZOLEDI 
Terms, referred to as such, are in roman type, with a ee initial, and heevean quote- 
marks, thus . . . i 5, 2 5 Se eae ce LUD OL CLO. 
Structures or subjects dealt with are in roman Woe with a Small initial, fics. ay es evolutions 
Names of Genera are in italics with an initial capital, thus . . . A oes Cidaris. 
Names of Species are indexed under the trivial name (in italics Sea never with an initial 
capital) followed by the generic name, thus . . . 5 2 = » duchy, Cidarts: 
The trivial names of species are also entered in an alphabetical list following the name 
of each genus with which they have been associated. There is no attempt to 
indicate which association is considered correct. 
Names of Subspecies, Varieties, and Mutations are dealt with in the same way, but are 
followed by the complete specific name, thus. . . . . . . . poculiformis, Cidaris alata. 
The Arbitrary signs of distinction «, f, {, are spelled out, and are followed by the specific 
or other name to which they refer, thus . . . - . . . . 4@lpha, Miocidaris sp. 
Fragments of which the species is indeterminable are iadeeed under the name of the genus 
to which they are referred, thus . . . Bins = « » « Llegtoctdasts sp. 
Under all entries of Systematic names, the qumber of the page on swtuch the Genus, or 
Species, or Specimen, is more particularly described or discussed 
is printed in heavy-faced type, thus. . ... .. .. . . scrobiculala, Cidaris, 1838. 
«acetabulum» of radiole, 135. 124; of Echinoidea, 247; in | 220, 239, 245, 261, Pls. XI, 
Acquate, Lombardy, 242. Hemipedina, 102; in Meso- | XIV. 
Acrosalenia, 225: crinifera, diadema, 121; in Miocidaris, | [alata] poculiformis, Cidaris : 
parva. 85, 92; in Triadocidaris, 69, | vide poculiformis. 
Acrosaleniidae, 100. (Enetls | — subalata, Cidaris: vide sub- 
Actinocrinus, 5. «adradial tract» of ambulacrum, | alata. 
«adapical» imbrication, 64. 61, 62. — typica, Cidarts: vide typica. 
— region», 60. aequituberculata, Diademopsis, alatus, Radiolus, 170. 
admeto, Cidaris, 101, 102, 115. 108, 110, 111. ALBERTI, F. von, 233, 265. 
— Hemipedina, 115. Agasmagas, 55. Alderton Hill, 101. 
— Mesodiadema, 115. AGASSIZ, A., 60, 63, 64, 66, 129, alpha, Diadematoid ambulacrum, 
«adoral» imbrication, 64. 130, 257, 258, 265. | 125, 255, Pl. IX, ff. 214, 215. 
— region», 60. Acassiz, J. L. R., 170, 175, 178, | — var. of Isocrinus tyrolensis: 
«adradial crenellae», 27. 188, 191, 195, 265, 270. vide tyrolensis. 
— imbrication, 64. AGRICOLA, G., 5, 7, 265. — Miocidaris sp. 89, 238, 
— sutures», 60; in Diadem- AIRAGHI, C., 113, 115, 255, 265. Pl. VI, ff. 150—152. 
atidae, 103; in Diademoida, alata, Cidaris, 138, 148, 170, — Triadocidaris sp., 76, 238. 
255--256; in /iademopsis, 180, 190, 192, 194, 201, 219, «Alsé», 241. 
18* 
