INDEX. 



The index includes all scientific names of sea-urchins or other animals, occurring in thin memoir. The accepted I 

 are in Roman type, excepting new ones, which are in heavy-faced type. All synonym* or except ional np<-lling arc in italim. 

 Personal names are included in the index only where there is discussion of opinions or other i*pecuil need of mmim-m. The 

 names of those from whom material was borrowed or to whom I am otlicrwi.se under obligation* arc given in tin- Intrudm-iion, 

 as well as throughout the text but arc not included in the index. The page-references in heavy faced type indicat<- tli<- 

 more important pages on which the case in hand is describe I 



abyssicola, Cidaris, 96, 100. 

 acanthifera, Archaeocidaris, 237, 258, 272. 

 Acanthocidaris hastigera, 97. 

 Acrosalenia, 78, 112, 214. 



aspera, 112, 157. 



decorata,-112, 157. 



hemicidaroides, 111, 112, 113, 157, 104, 174. 



pscudodecorata, 112, 148, 150, 152. 



pustulata, 112, 157, 164. 



spinosa, 111, 112, 157, 174, 175. 



wiltoni, 111, 112, 157, 175, 170. 

 acuaria, Echinocystis, 441. 



Eocidaris, 441. 



acuaria, Pholidocidaris, 236, 443, 441. 

 acuario, Prolocidaris, 441. 

 aculeata, Archaeocidaris, 237, 238, 258, 268. 

 acideatus, Archaeocidaris, 268. 

 acutus, Echinus, 118, 139, 160. 

 affinis, Cidaris, 61, 91, 92, 95, 96, 97, 99, 100, 141, 14(i. 



Echinus, 117, 118, 139, 150, 153, 160, 171, 216. 

 Agassiz, Alexander, 10, 11, 18, 28, 31, 32, 33, 34, 52, 56, 57, 

 61, 63, 64, 65, 69, 71, 74, 79, 81, 82, 84, 85, 86, 88, 

 89, 101, 102, 104, 110, 111, 113, 116, 117, 121, 127, 

 128, 167, 168, 170, 174, 175, 176, 177, 185, 187, 189, 

 198, 210, 214, 215, 217, 218, 219, 223, 287, 297, 361, 

 362, 363, 378, 395, 398, 413, 414, 415, 433. 

 Agassiz, Alexander, and Clark, H. L., 28, 62, 76, 82, 97, 



104, 118, 128, 172, 213, 215, 218, 415. 

 Agassiz, Louis, 15, 33, 257, 400. 

 agassizi, Archaeocidaris, 82, 237, 256, 258, 266. 



Palaechinus, 305, 467. 

 agassizii, Archaeocidaris, 266. 

 Agelacrinus kaskaskiensis, 458. 

 albida, Trigonocidaris, 159. 

 albus, Strongylocentrotus, 95, 127, 162, 164, 217. 

 Aldrovandus, Ulysses, 10, 244. 

 alexandri, Salmacis, 159. 

 Amblypneustes, 35, 50, 187. 



formosus, 31, 159. 



griseus, 159. 



ovum, 159. 



pallidus, 159. 

 Ammonites, 56, 232. 

 .\niiilema, 28. 

 Ananchytes, 52, 92, 150. 



ovatus, 112, 148. 



An-haeocidarif, II'' 



anceps, ErliimxTiiius, 258. 449, 4.11, 4"ii. 

 aneeju, Mdonrchiniu, 454. 

 ancepx, Proton-limns, 41'., !.",:<, 464. 

 anglicus, Lovenechinus 304, .;jl. .:_'. 346. 

 aiiKiilosus. KrKinu-, ll!. l.M. I.Vi. IIKI, Hi I 

 iiiinilnlii, ('iiliiinriii.i, 28. 

 annulatus, Microcyphus, H><> 



anmilifcra. I'liyllacantlms, 1(11, Kr.'. I.VI I.VJ. I.Vf. 

 antarclicus, Stererhinu>. ! 

 Antedon, 52. 



antillariim, Di-rmaiiHliadi-nia, 81, 104, 1.11. 

 antillarum, Dvulema, 28. 

 Arachnoidcs, til, 72, 20-1, 21K. 



placenta, ~'2. 



Arbacia, IS, 19, 2!i. H>, li, 52, 58, 62, 65, till. 71.7.;. s7, 89, 

 90,91,107. Ill',, 1117. 17.-,. I7f,. Is:;. |s7. IVi. IT.'. 

 194, 198, 210, 215, 217, '.Ml 

 dufn-sni. 115, 158, If, I, 17f, 



lixula, 40, 47, 7!l, 11 I. 1.1s. |r,|, ls7. I'.rj. llll, I'.i.l 

 nigra, 05, 114, 115, 14S, 150, 152. I.VJ. 1.1S. 164. 17(>, 



187, 192, 194, 195. 



puiiHulata, 35, 37,39, 41, IJ. II 1.1. If,. Is. 50, 88, 

 114, 115, 141, 1.11, 1.1.', 153, 158, 164, 170, 171. 17.1. 

 176, 179, 185, ls7 

 spatuligera, 95, 11.1. llti, 1.1s. 164. 

 strllata, 114, 158. 

 Arbaciida.-. if.', 93, 111, 113, lit, i:5:i. lit-. l.Hl. MS. 203. 



209, 214, 215, 218. 

 Archaeocidaridae, 70, 89, 206. Jim. >2:\. -J36, 264. 2M, IMC.', 



305, 379, 393, 409. 



Archaeocidaris, 10, 18, 23, . 7(1, 7:{. 7 1, 77, : - 



85, 178, 181, 182. 206, '.'(hi. 21'.'. 228, O4 

 238, 254, 255, 266. Jiil. J7ti. .'7.1. J77, 278, 280, 282, 

 283, 289, :)7. mil. :;::. :i.l. H>7. 11:;. U4, 450, 456. 

 acanthifera, 237, 258, 272. 

 aculeata, 237, 238, 258, 268 

 aculratttx, 268. 



agassizi, 82, 237, 256, 258. 266 

 agassizii, 266. 

 anceps, 449. 

 benburbensis, 277. 

 biangulata, 237, 258. 273. 

 biangulatux. -7'.'< 

 clavnta, 2.V.), 282 



(478) 



