ERRATA. 



i'age 2, line 48, for have read has. 



13, 9, for membraneous read membranous. 



16, 2, from the bottom, for surfaces read surface. 



18, 20, dele already. 



21, 12, for Plate II. Fig. 3, read Plate HI. Fig. 4. 



33, 25, for 14 read 17. , 



50, 1, for labours read labour. 



57, 29, for arguments read agreements. 



58, 1, for their read the. 

 76, 23, for 12 read 14. 

 92, ^25, for to read of. 



101, 18, for art read part. 



109, 20, p/ac a comma after surface, and dele the comma after ICHS. 



112, 17, for in read on. 



116, 21, after cavity, read would be effected. 



117, for Letter XIV. read Letter XIII. 

 U8, 1, /or ment A read ment o. 



120! u', /or Fig> 9> rea(f Fig> 6l 



123J ?,' /or 4 rzd 7. 



125, 7, for membraneous read membranous. 



135, 25, after perfect add a, 



143, 19, dele and. 



155, 5, after APPENDICES add or PROCESSES. 



, 13, dele two. 



159, 22, for 15 read 16. 



160, 3, /or 16 read 15. 



166, 15, for entrochius read entrochus. 



168, 23, for membraneous read membranous. 



174, 6, for lapidium read lapideum. 



, 2, from bottom, for on the first read the first on. 



193, 27, for XV. read XIII. 



195, 1, from bottom, for truncated read tunicated. 



213, 4, from bottom, for transverse read longitudinal. 



220, 18, for ise read isle. 



222, 21, fot metacarpal read carpal. 



228, 17, for tentaculae read tentacula. 



250, 25, for strait read straight. 



233, 1, From bottom, for bodies read body. 



238, 27, after America insert and. 



255, 7, for for read of. 



257, 8, for XNCB.INITE read PENTACI.INITX. 



270, 4, from bottom, for 2 read 3. 



