308 BALANID/E. 



1. ACASTA SPONGITES. PI. 9, fig. 1 a — 1 (I. 



Lepas spongites. Poll. Testacea utriusque Sicilise, 1795, Tab. 6, 



fig. 3—6. 

 Balanus spongeosus. Montagu. Test. Brit. Suppl., 1808. 



— spongites. ])e Blainville. Diet. Sc. Nat., PI. 116, fig. 3. 

 Lepas spongiosa. Wood's General Conchology, p. 47. 



Acasta Montagui. Leac/i, in Lamarck, Animaux sans Vertebres, 



1818, et in Encyclop. Brit., Supplement, 

 1824, vol. 3, PI. 57.* 



— — J. K Gray. Annals of Philosophy, New 



Series, vol. 10, Aug. 182 5. 



— spongites. Philippi. Enum.Mollus. Sicilise, vol. 2, p. 211, 



1844. 

 Balanus Montagui. Brown's Illustrations of Conchology (2d edit. 



1S14), PL 53, fig. 24—26. 



Carino-lateral parietes about one sixth of width of lateral 

 parietes : inner surface of the parietes generally ribbed 

 feebly : scutum with the articular ridge abruptly cut off at 



its lower end : tergum loith the spur rounded-truncated, about 



one third of width of valve. 



Hal. — South coast of England ; South "Wales, (Tenby) ; Portugal ; Naples ; 

 Sicily ; Cape of Good Hope. 



This species and the three following, have caused me 

 much doubt and trouble. At first I took the view here 

 adopted, namely, that they were distinct : more careful 

 examination made me run them altogether under one name. 

 Finally, after still further deliberation, and the examination 

 of a few additional specimens, I concluded there was 

 the least chance of error in classing them separately. I 

 may here mention, that in some sponge from the Cape 

 of Good Hope, this species was mingled with Balanus 

 spongicola. 



* As the plate to the Supplement to the ' Encyclop. Brit.' is marked as 

 engraved in 1817, I presume Dr. Leach gave a proof to Lamarck, thus en- 

 abling him to publish this species four years before the Supplement itself 

 appeared. 



