/• X. ^r V 



' 



DESCRIPTION OF PLATES. 



PLATE 1. 



Genus — Balanus. 

 Fig. 



a, b, and f (upper shell). Balanus tintinnabulum,- 

 c and/ (part of shell) 

 d 

 e 

 f (part of shell) 



9 

 h 



i 



k 



I 



» )> >> 





PLATE 2. 



Genus — Balanus . 

 Fig. 



1 a Balanus tintinnabnlum, — var. communis, scutum, 



\ b „ „ „ occator ,, 



1 c, 1 d, and 1 e „ „ „ communis „ 



1/ ,, ,, ,, coccopoma „ 



\ g ,, „ ,, concinnus „ 



1 h (magnified) ,, ,, {young) „ vesiculosus ,, 



Hand ik ,, ,, -> „ communis, tergum. 



\l „ „ „ coccopoma ,, 



1 m and \n „ „ „ d'Orbignii „ 

 \o ,, „ ,, coccopoma „ 



2 a, 2 by 2c, 2d. Balanus tulipiformis, scutum and tergum, external 



and internal views of. 



3 a, 3 by 3 c, 3 c?, Balanus psittacus, scutum and tergum, external and 



internal views of. 



4 «, 4 by Balanus Capensis, scutum and tergum, internal view of. 



5 a, 5 b, Balanus nigrescens „ ,, 



6 a, Balanus decorus, scutum, internal view ; 6 b, tergum, external 



view. 



41 



