66 Ech. 
XIV. ECU I NODERMA. 
lxii, p. 173 ; t E. dumasi , Middle Miocene of Montigne Briand and 
Langeais in Maine-et-Loire, Cotteau, Mem. Soc. zool. France, vi, 
p. 353 ; \E. morgani , Tertiary, Mt. Gambier, Australia, Cotteau, 
Mem. Soc. zool. France, iii, p. 546 : n. spp. 
Echinometra lucunter, Blainv. sp., habits of life; Boutan (24) p. 213: 
borings ; Studer (256) pp. 192, 216, 248, & 260 : Leske sp., Tahiti ; 
Meissner (181) p. 184 : Leske non Linn., criticising Loven’s use of 
the name ; Loriol (154) p. 373. E. macrostoma , Lutk. ; Studer 
( 256) p. 21. E. subangularis , DesM., habitat natural holes ; Field 
( 82) p. 83 : colour, bore into augite-lava ; Studer (256) pp. 17 & 22. 
E. vanbrunti , A. Ag., boring holes ; Fewkes (80). 
Echinone us semilunaris , Lam. ; Field (82) p. 84. 
t Echinopedina, Cott., defined, and E. gacheti, Desm. sp., redescribed ; 
Cotteau (44) pp. 619 & 620. 
t Echinopsis, Agass., defined and discussed ; Cotteau (44) p. 577. E. 
arenata , d’Arch. sp., see Arachniopleurus. E. elegans , Desm. sp., 
redescribed, structure of poriferous plates, a pauci-granulate variety; 
op. cit. p. 579. E. libycus, Lor. ; op. cit. p. 587. E. pusilla, F. A. 
Rom., referred to Zeuglopleurus ; Schlueter (236) p. 207. 
E. biarritzensis, Upper Eocene, near Biarritz, p. 585, E.degrangei, Middle 
Eocene of Plassac in Gironde, p. 583, Cotteau, Pal. franc., Ech. 
Tert. ii : n. spp. 
iEchinospatagus breyniusi , d’Orb., redescribed ; Lambert (145) p. 93. 
iE. collignoi , see Toxaster. 
Echinostrephus molare , A. Agass. ; Studer (256) p. 216. 
Echinothrix desori , Agass., a small specimen described ; Loriol (154) 
p. 362. 
Echinothurice , apical system ; Agassiz (2) p. 77. 
Echinus, Agass. ; Bell (16) 145. E. acutus , Lam. ; Bell (16) p. 146 : 
a parasitic Turbellarian ; CukNOT (60). E. alexandri , Dan. & Koi\, 
redescribed and figured ; Danielssen (62) p. 1. E. angulosus , Leske 
sp., variation in colour; Meissner (181) p. 184. t E. bolivarii , d’Orb., 
see Diplopodia texanum. E. diadema , Stud., distribution ; Studer 
( 256) pp. 149 & 163. E. elegans , Dub. & Kor. ; Bell (16) p. 154, 
Danielssen (62) p. 4. E. esculentus , Linn. ; Bell (16) p. 152, 
Danielssen (62) p. 4, Efisio (73) p. 252, Petersen (216) p. 39, 
Nordgaard (201) pp. 5 & 10 : very depressed form; Scott (238) 
p. 49: depressed and lofty vars. ; Scott (339). E.Jlemingi, Forbes ; 
Danielssen (62) p. 4, Nordgaard (201) pp. 5 & 10. tE. glandarius , 
Fraas, see Gidaris. t E. leymeviei , Cott., see Sphaer echinus. E.magel - 
lanicus , Phil. ; Studer (256) pp. 283 & 285. E. margaritaccus , 
Lam. ; Studer (256) pp. 288 & 289. E. melo, Lam. ; Efisio (73) 
p. 252. E. microstoma , W. Thoms. ; Bell (16) p. 149. E. micro- 
tuberculatus, Blainv., segmentation and development experimentally 
investigated ; Driesch (68, 69, 70) and Herbst( 116, 118) : develop- 
ment ; Penard (210) : alimentary canal ; Frenzel, (88) p. 101: 
spermatogenesis; Field (83). E.miliaris , Gmel.; Bell (16) p. 150, 
