Index to Genera, 



43 



Linthia, 395 : cruciata, insignis, spatango'fdes. 

 Lobophora, 235 : bifissa, bifora. 

 Loxechinus, 136 : albus. 



Macropneustes, 409 : ammon, beaumonti, brissoi'des, c hitonosus, cosoni, crassus, 

 deshayesii, desorii, gibbosus, marmorae, meneghinii, minor, prevostii, pulvi- 

 natus, requieni, subovatus. 



Macropygus, pi. 22 : truncatus. 



Magnosia, 115 : decorata, forbesi, jurassica, lens, nodoti, nodulosa, pilos, 



pulchella, punctata, richeriana, tetrasticha. 

 Manopneustes, err. pro Macropneustes, 410. 

 Melebosis, 109 : mirabilis. 

 Mellita, 236 : hexapora, similis, testudinata. 

 Melonites, 159 : multipora. 

 Meoma, 423 : grandis. 

 Mespilia, no : globulus. 



Metaporhinus, 210 : censoriensis, geymardi (gueymardi), michelinii, munsteri. 



Micraster, 360 : acutus, aquitanicus, arenatus, beaumonti, brevis, breviporus, brevi- 

 sulcatus, brongniarti, cor-anguinum, cor-bovis, cor-columbarium, cordatus, 

 cordiformis, cor-testudinarium, deshayesii, desorii, distinctus, edwardsii, 

 gibbus, gleizezei, helveticus, integer, koechlianus, latus, laxoporus, leskei, 

 major, matheronii, michelini, minimus, murchisoni, polygonus, pulvinatus, 

 renouxii, sexangulatus, subacutus, trigonalis, tropidotus, tumidus, undulatus. 



Microcyphus, no. 



Micropsis, 451 : desori. 



Milnia, 140 : decorata. 



Moera, 394 : atropos, lachesis. 



Monophora, 234 : darwinii. 



Mortonia, 231 : rogersi. 



Moulinsia, 222 : cassidulina. 



Nucleolites, 263 : agassizii, alpinus, amplus, analis, approximatus, archiaci, bomarii, 

 bourgeoisii, britanna, canaliculatus, carinatus, castanea, cerceleti, clunicularis, 

 collegnii, columbaria, conicus, cor-avium, cordatus, costulatus, crepidula, crucifcr, 

 cruciferus, decollatus, depressus, dilatatus, dimidiatus, edmundi, elongatus, 

 emarginatus, excentricus, excisus, faba, goldfussii, gracilis, granulosus, 

 gresslyi, grignonensis, heptagona, koechlini, lacunosus, laevis, lamarckii, 

 lapis-cancri, lata roberti var., latiporus, major, marmini, michelini, micraulus, 

 minimus, minor, minutus, morrisii, mortoni, munsteri, neocomicnsis, nicoleti, 

 oblongus, obovatus, olfersii, orbicularis, oviformis, ovulum, parallelus, para- 

 plesius, patella, patellaris, planulatus, pyramidalis, pyriformis, quadratus, 

 recens, renaudi, requieni, ricordeanus, roberti, robinaldinus, salviensis, sancti 

 meinradi, sarthasensis, scrobiculatus, scutatus, scutatus suevicus, scutella, semi- 

 globus, similis, solodurinus, sowerbyi, subcai hiatus, subquadratus, terquemi, 

 testudinarius, thurmanni, truncatulus, umbrella, woodwardi. 



Nucleopygus, 188 (1857), 188a (1858) : cor-avium, costellatus, depressus, icaunensis, 

 incisus, koechlini, minor. 



Offaster, 333 : bourgeoisanus, inflatus, pilula, rostratus, zignonanus. 

 Oolopygus, 286 : bargesii, pyriformis. 



Opechinus, 107 : costatus, hookeri, percultus, rousseaui, tuberculosus, valen- 

 ciennesi. 



Pachyclypus, 195 : semiglobus. 



Palaechinus, 157 : elegans, ellipticus, gigas, konigii, phillipsiae, sphaericus, 

 verneuillanus. 



Palaeocidaris, 48 (1855) : nerei, prisca, rossica, spinosa nerei var. 



Pedina, 100 : arenata, aspera, aspera sublaevis var., bakeri, charmassei, davous- 



tiana, etheridgii, gervillii, gigas, granulosa, inflata, michelini, ornata, 



rotata, sinaica, smithii, sublaevis, subnuda. 

 Peltastes, 145 : acanthodes, courtaudina, marginalis, pentagoniferus, pulchellus, 



punctatus, stellulatus. 



