xviii ADDITIONS, ETC. ERRATA. 



opercular fold, and a diverticulum homologous with the ' notochord ' of Balano- 

 glossus. See Harmer, Appendix to M'Intosh on Cephalodiscus, Challenger Reports, 

 xx. 1887. 



p. 716. Polyparium (not as printed, Polypodiuni) ambulans; See Korotneff, 

 Z. W. Z. xlv. 1887 (transl. A. N. H. (5), xx) ; Ehlers, ibid. 



p. 732. Classification of Alcyonaria ; see Studer> A. N. 53 (i), 1887. 



p. 811. Hyalospongiae. F. E. Schulze, ' Hexactinellidaej Challenger Reports, 

 xxi. 1887. 



ERRATA. 



Page 53, line 12 from bottom, for and read end. 



p. 55, line 2 from bottom, for interclvaicular read interclavicular. 



p. 59, line 20, for vertebrae read vertebra. 



p. 61, line 20 from bottom, for long-oblique read long, oblique. 



p. 91, line 4, for (S. O.) read (E. 0.}. 



p. 112, line 24, for 1871 read 1817. 



p. 113, line 21 from bottom, for ganglia read ganglion. 



p. 1 68, line 6 from bottom, for five read fine. 



p. 1 99, line 1 1 from bottom, for Acanthrodrilus read Acanthodrilus. 



p. 232, line 20, for Staphylocystes read Staphylocystis. 



p. 243, lines 20, 21, for Ophridium read Ophrydium. 



p. 249, line 15 from bottom, for Abth. ii. read Abth. i. 



p. 250, line 12 from bottom, for in the read round the. 



p. 253, line 20 from bottom, should read A. N. H. (5) : vii. 1881 ; gemmule 



of Carterella, ix. 1882 ; x. 1882 ; fossil spicules. 

 p. 273, line 1 6, for metanaphros read metanephros. 

 p. 302, line 2, for labral read labial. 



P- 337> last line, p. 338 line i,for ali- read prae-, and_/0r prae-, ali-. 

 p. 376, line iS,for and read or. 

 p. 462, line 20, for arteries read veins. 

 p. 465, line 1 8, for Cirroteuthidaei read Cirroteuthidae. 

 p. 475, une J 3 from bottom, for Enthyneura read Euthyneura, 

 p. 482, line 12 from bottom, for skull read shell. 

 p. 483, line 1 7 from bottom, for large or raz</ large and. 

 p. 485, line 2, for exterior read anterior. 



p. 490, line 5 from bottom, for hollow-jointed, read hollow, jointed. 

 p. 500, line 22, for into read by. 

 p. 515, line ii from bottom, for class read order, 

 p. 530, line 4, for Tyrogiyphidae read Tyroglyphidae. 



p. 536, line 5 from bottom, dele commas after Phyllopoda and Branchiopoda. 

 p. 584, note, line 8 from bottom, for arms read anus, 

 p. 647, line 7 from bottom, for peristaltic read peristaltic, 

 p. 658, line 16 from bottom, for viscual read visual, 

 p. 716, line 17, for Polypodium read Polyparium. 



