Note 58 — Class—CRUSTACEA. Sub-Class—CIRRIPEDIA. (continued 5)

In my first, and as I thought careful examination of the separated valves (my only materials) of this species, I mistook one of the triangular rostral latera for the rostrum, and hence was unfortunately led into an error in my ‘Monograph on the Fossil Lepadidæ of Great Britain,’ in which I state that the present species has only twelve valves in the capitulum; and I inferred from this, that S. quadratum, S. fossula, &c., had only twelve valves; I still believe this to be correct, but the existence of fourteen valves in S. rutilum and S. ornatum, the recent species to which the above fossils are most closely allied, no doubt is a strong argument in favour of this higher number.