ERRATA AND ADDENDA. 



Page 28, line 18, add (See pp. 362, 378, 414, 415.). 



Page 28, line 31, for Muerchen (1774) read Meuschen (1787). 



Page 54, line 28, for Oligoporus danae Meek and Worthen rrml OKgoponu danae (Meek and Worthen). 



Page 105, line 8, for Magnosia punctulota (Luinarck) read Magnolia /miii-tutu (QnOMtedt). 



Page 148, line 34, for Holcciypus hemispherical read Ilnlerti/pii.t htmitpkacrinu. 



Page 188, line 5, for distinct continuous base read discontinuous base. 



Page 208, line 4, for and alone on other read and usually alone on other. 



Page 208, line 0, for Eleven read Twelve. 



Page 230, line 33, for Oligoporus danac Meek and Worthen read OligojmrtiH dannc (Meek and Worthen). 



Page 232, line 16, for twelve read thirteen. 



Page 233, line 27, for eleven read twelve. 



Page 250, after line 26, add a line reading: Echinoct/slites (pars) Duncan, 1889a, p. 20. 



Page 251, line 28, for sea-urchin, superposed on those of a starfish read starfish, superposed on those of a 



sea-urchin. 



Page 252, line 19, for Duncan, 1889a, p. 20, read (pars) Duncan, 1889a, p. 20. 

 Page 253, line 21, for ?>.,/,;/ / ,-,-ad Tessellati. 

 Page 272, line 3, for 1880, p. 130, read 1880a, p. 130. 

 Page 272, line 18, for Plate 2, fig. u read Plate 2, fig. n. 

 Page 272, line 19, for Plate 25, figs. 1, la, read Plate 35, figs. 1, la. 

 Page 282, line 7, for Plate 23, fig. 16 read Plate 33, fig. 16. 

 Page 282, line 13, for Lepidocidaris Meek and Worthen, 1873, p. 482; read Lepidocidarit Meek and Worthen, 



1869, p. 81; 1873, p. 482. 



Page 287, line 30, for Eight columns read Apparently nine columns. 

 Page 321, line 26, for Lambert and ThieVy, 1900, read Lambert and ThieYy, 1910. 

 Page 356, line 7, for Oligoporus danae read "Oligoporus danae. 

 Page 428, line 9, for Plate 78, read Plate 71. 



Description of Plate 7, fig. 2, line 6, for oculitrs I iiiul II reail oculars I and III. 

 Description of Plate 67, line I, for Perischodomus harteiana mid Perischocidaris harteiana. 



(491) 



