INDEX 



611 



IniiihiiLtihi, larviforiiiiii, SOo, 363 



lufrabasals, 318 



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



197 

 Iiii'irramiix^ 17 

 Intiyi-iimUUita, shell, 63 

 luterambulacra, 339 

 Interambulacral radii, 316 

 Interdistichals, 363 

 Internodes, 374 

 Interpalmars, 363 

 Interradii, 316 

 Intersecundibrachs, 363 

 Intertertibrachs, 363 

 locrinas^ SOIf. 

 Irpa, 418 

 In-eijiiUii-ex, 315 

 Isaker, 303 

 Isotni/arm, 124 



Janus, 13 \ nervous system, 141 

 Jwannetia, 19 



,, (Jiniiingil, 19 



Jaglaiidocrinus, 332 



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



Kell,/,i, 17 



K':niroihiii^, 13 



Kh-'iitia h'zoiiica, apical system, 342 



Knl,j,,, 2S3 



Kiillicker's canals (Ceph.), 168 



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



Labidiaster, 399 



Luhidnih'jiw^^, 491 



Labrum (Echinoid.), 348 



Lacunn, 108 



LirJiiinijntii;, 385 



L<njii iiiilfc, 301 



Lnijanam, 391 



,, (h'.pres^u)^, apical system, 323 



Li'ijh!llufidi:e, 6 

 LaiiiclUhroAichiaiO-, 14-31 ; byssus, 114 ; 



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



156 

 Lancet plates (Blast.), 380 

 LiuilMes (see Awpidluria), 161 

 Larcl/i.injiia, 303 

 Lascea, 17 



Lateral organs (Gastr.), 165 

 Lecytkocrinus, 304 

 Leda, 14 

 LepidAilfX', 5 

 Lepidiicentrus, 389 

 Lipidi)iiieihi/<, 13 



,, hydrix, \Z2, 



LcptiiC'incluis, 183 

 Lciitoii, 17 



Li^lilujilydHidcr tcrfji'claicmiis, 503 

 Lcsl.i'ida; 395 

 Lriiomia, 109 

 Ligament (Lam.), 61 

 Lima, 105 



Liuutcidce, S 



Liiiiacina heliriim, anatomy, 189 



,, Li:sii,et-iii, 11 



,, retrmersa, 160 

 Liiiiachiida; 11 ; diagram, 80 

 Luiiap)ontiidcti, 13 

 Limax, 8 ; vascular system, 204 

 Limidce, 53 

 Limncea, 8 



,, abyssicola, 100 



„ stagnalis, genital organs, 235 

 LitiinceidcE, 8 

 Linckia, 398 



,, Midtf/uiv, 244 

 Linckiidce, 398 

 Linthia, 393 

 Lipoceplmla, 101, 177 

 Lithodomus, 15 

 LUiopidai, 108 

 Littorinidw, 6 

 Litiutes, 68 

 Luhiger, 13 



Loligo, 34 ; gonad, male, 231 ; nervous 

 system, 148 

 ,, vulgaris, 23 

 Loligopsis, 24 ; shell, section, 69 

 Lainu.nvtl'lw, IS 

 Loven, law of, 341-344 

 Lfwciiia, 393 



Lucina Pennsyha.inin, shell, 63 

 Luciiiacca, 50 

 Lucinidce, 17 

 Lvklia, 396 

 Lunula, 341 

 Lutraria, 61 

 Ijutrariidcc, 19 

 Lyim&ut Nnrwegica, 51 

 Lyi'iivlkh:, 31 



JIACTRA, 18 

 Mitctrldas, 18 

 Macula, 168 



,, acustica, 168 

 Madreporite, 321, 416-423 

 J/agdiis, 183 

 Mi'dletia, 49 

 Malleus, 17 

 Mantle, 26 ; cavity, 26 

 Margarita. Groeulandica, 4 

 Margaritana [Uuio) Margaritiferus, 17 

 Margiuaster, 307 

 JMargindlida^, 6 

 Mariacrinus, 307 

 iMariauia, 13 

 Marseniadce, 225 

 Marsiipia, 347 

 Ma.rsupiucrluus, 308 



„ caJalus, tegmen calycis, 



369 

 Marsupites, 304 



arnidus, ai^ical system, 329 

 Marlrr,ia, 65 

 Megallcesthetes, 166 



