INDEX 



611 



Inmhinata larviformia, 303, 363 



Infrahasals, 318 



Ink-liag (Cepli.), 177, 196 ; morphology, 



197 

 /iKiirriimiis, 17 

 fntiyri/t(////((fa, shell, 63 

 luterauibulacra, 339 

 Interambulacral radii, 316 

 Interdisticlials, 363 

 Internodes, 374 

 luterpahuars, 363 

 Interradii, 316 

 Iiitersecuiidibrachs, 363 

 Intertertibrachs, 363 

 locrinus, 304 

 Irpa, 418 

 Irregulares, 315 

 Isaster, 293 

 Isomyaria, 124 



Janus, 13 ; nervous system, 141 

 Jouannetia, 19 



,, Cuming a, 19 

 Juglandocrinus, 332 



Keber's organ (red-brown organ), 215 



Kflllna, 17 



Kcntrodni'is, 13 



Kh'inia luzonica, apical system, 342 



Kolga, 285 



Kiillicker's canals (Ceph.), 168 



Labial palps (Gastr.), 104 ; (Lam.), 105 



LciMdiaster, 299 



Labidodemas, 491 



Labrum (Echinoid.), 348 



Lacuna, 108 



Lcetmogone, 285 



Laganidce, 291 



Laganum, 291 



„ depression, apical system, 323 



Lamellaridce, 6 

 Lan\dUhranck'udii , 1^-21 ; byssus, 114 ; 



diagrams, 50 ; heart, 199 ; shell, 59, 62, 



156 

 Lancet plates (Blast.), 380 

 Lanistes (see Ampu/laria), 161 

 Larvifonnia, 303 

 LasaM, 17 



Lateral organs (Gastr.), 165 

 Lecythocrinus, 304 

 Leda, 14 

 Lepetidce, 5 

 Lepidocentriis, 289 

 Lepidomenia, 13 



„ hystru:, 132 



Leptoconchus, 183 

 Leptan, 17 



Lcptiiptychaster kerguelenensis, 503 

 Leskiidce, 295 

 Leuciinia, 109 

 Ligament (Lam.), 61 

 Lima, 105 



Limucidw, 8 



Limacina heliciiui, anatomy, 189 



,, Lesiierui, 11 



,, retroversa, 160 

 Limacinida;, 11 ; diagi-am, 80 

 LinMpiontiidK, 12 

 Limax, 8 ; vascular system, 204 

 Limidce, 53 

 Livmaia, 8 



„ ahyssicola, 100 



„ stagnalis, genital organs, 235 

 Limnceidce, 8 

 Linckia, 298 



,, imdtifora, 244 

 LinckiidcB, 298 

 Linthia, 293 

 Lipocepluda, 101, 177 

 Lithodomus, 15 

 Litiopidce, 108 

 Littiirinidm, 6 

 Lituitos, 68 

 Lohiger, 12 



Loligo, 24 ; gonad, male, 231 ; nervous 

 system, 148 

 ,, vulgaris, 23 

 Loligopsis, 24 ; shell, section, 69 

 Lonutnotidce, 13 

 Loven, law of, 341-344 

 Lovenia, 293 



Lucina Pennsylvanica, shell, 63 

 Lucinacea, 50 

 Lucinidw, 17 

 Luidia, 296 

 Lunula, 341 

 Lutrarkc, 51 

 Lutrarudce, 19 

 Lyonsia Norwegica, 51 

 Lyonsiidce, 21 



Mactra, 18 



Mactridw, 18 

 Macula, 168 



,, acustica, 168 

 Madreporite, 321, 416-423 

 Mag it us, 183 

 MaUetia, 49 

 Malleus, 17 

 Mantle, 26 ; cavity, 26 

 Mar<ji(rifi( Groenlandicu, 4 

 Mtiniitrlfinia {Unio) Margaritifcrus, 17 

 Miiniiinisirr, 297 

 Moi;ii,i.-Uidce, 6 

 Min-ia,rinus,307 

 Mariuuia, 13 

 Marseniadce, 225 

 Marsupia, 347 

 Marsupiocrinus, 308 



„ ccelaius, tegmen calycis, 



369 

 Marsupitcs, 304 



„ ornatus, apical system, 329 



Martesia, 65 

 Megallc-esthetes, 166 



