ADDENDA ET CORRIGENDA. 
PLANTyE. 
LYGINODENDRON. 
Landsburgii, Gourlie,Glasg.PhiLSoc. Feb. 1843. C.M. Stevenston, Ayrshire. 
POTHOCITES. 
Grantoni, ...Patteson, Ed. Bot. Tr. 1. pt. 1. 1.3. C.M. Granton, Scotland. 
CONCHIFERA. 
INOCERAMUS. 
Lamarckii, Park. G. Tr. 5. t. 1. f. 3 ; Mant. Ch. 
Geol. Sus. t. 27. f. P 
Lewes ; Dover. 
TRIGONELLTTES, Park. APTYCHUS, Meyer, 
antiquatus, Phil. G. Y. 1. t. 3. f. 26 Cor. R. Yorkshire. 
latus,.... Park. O. R. 3. t. 13. f. 9, 12; G. Tr. Kim.C. Whitchurch, Bucks; 
2 ser. 4. t. 23. f. 11 ; Aptychus Southrey (Fitfon), 
IcBvis ? Von Meyer, Nov. Act. 
Acad. 15. t. 58. f. 1, 2, 4. 
politus, ......Phil. G. Y. 1. t. 5. f. 8. O.Cl. Yorkshire;^ Wilts. 
BRACHIOPODA. 
It will be observed in this Catalogue that both Productus and Leptsena are re- 
tained : under the former genus are comprised all those gibbous species having 
the margin of both valves continued together, with no distinct hinge area, and the 
spines irregularly seated on the convex valve ; under Leptsena are arranged those 
species having a distinct cardinal area, and the spines (when present) only placed 
