INTRODUCTORY OBSERVATIONS. 99 



Coralline Zone. Hydractinia echinata; Eudendriiim ra- 

 meum, confertum ; Tiibularia indivisa, gracilis ; Halecium 

 halecmnm, muricatum ; Sertularia jiolyzonias, fallax, 

 ixbietmsi, Jilicula ; Thuiaria thuia ; Antennularia antemiina, 

 ramosa ; Plumularia falcata, pinnata, Catherina, frutes- 

 cens ; Laomedea longissima ; Campanularia volubilis, 

 Johnstoni, syriiiga, verticillata, dumosa; Reticularia ser- 

 pens; Coppinia arcta; Vermsitiiisi phospJiorea ; Alcyonium 

 digitatum ; Actinia crassicornis, diantliiis ; Antliea Tuedise, 

 Tubulipora patina, serpens; Cellepora j^^jnicosa; Crisia 

 eburnea ; Gemellaria lorkulata ; Lepralia trispinosa, line- 

 aris ; Membranipora Flemingii^ unicornis ; Cellularia 

 samposa, reptans; Bugula flabellata; Flustra foliacea, 

 truncata; Carbasea jMp^rea; Salicornaria farciminoides ; 

 Alcyonidium parasiticum, mammillatum ; Farrella pedi- 

 cellata; Avenella fusca. 

 Deep Water. Eudendrium rameum; Tubularia indivisa, 

 Dumortierii ; Halecium halecinum, muricatum; Sertularia 

 tricuspidata, abietina^ filicula, /?/5c« ; Thuiaria thuia; Vhx- 

 v[ivl3iY\2i falcata, Catherina; Campanularia vo/z^^i'/z's, John- 

 stoni, verticillata, dumosa, gracillima; Grammaria ramosa; 

 Actinia digitata ; Tubulipora patina, serpens ; Diastopora 

 obelia, Alecto major; Cellepora pumicosa, ramulosa, Skenei; 

 Lepralia reticulata, trispinosa, linearis ; Cellularia ternata, 

 Peachii; Bugula Murrayana ; Eschara cribraria; Rete- 

 pora Beaniana ; Alcyonidium j^circisiticiwi. 

 It remains for me now to express my obligations to those 

 friends who have kindly assisted me, either by information or 

 specimens, in the preparation of this Catalogue. My thanks are 

 especially due to Miss Dale, of AYliitburn ; Mr. Hogg, of Norton 

 House ; Mr. Embleton, of Embleton ; Mr. Coppin, of North Shields ; 

 and Mr. R. Howse, of South Shields. I am also greatly indebted 

 to Professor Busk for much valuable information, which his ex- 

 tensive knowledge of the subject alone could supply; and to the 

 Rev. T. Hincks for similar assistance. Nor can I omit to mention 

 my obligations to one whose recent loss I, along with all who 

 knew him, have had so much reason to deplore. Had Dr. John- 



