[Page 647], Plate 14: Genera—CREUSIA AND CHELONOBIA.
In the original book: Genera—CREUSIA, CHELONOBIA.

[Page 650], Plate 16: Of the letters in italics, …
In the original book, this sentence was not aligned differently from the surrounding items.

[Page 650], Plate 16: open beneath, and filled up by the epidermis
In the original book: open beneath, and filled up by the epiderdermis

[Page 651], Plate 17, 2 a: A, rostrum;
In the original book: A, rostum;

[Page 653], Plate 19, 4 b, 4 c, 4 d: Chamæsipho scutelliformis,
In the original book: Chamæsipho columna,

[Page 657], Plate 22, 8: appear like a bilobed lower lip;
In the original book: appear like a bi-lobed lower lip;

[Page 658], Plate 23. Title inserted to match plate:
Genera—ALCIPPE AND CRYPTOPHIALUS.

[Page 660], Plate 24. Title inserted to match plate:
Genera—CRYPTOPHIALUS AND PROTEOLEPAS.

[Page 662], Plate 25. Title inserted to match plate:
Genera—PROTEOLEPAS AND BALANUS.

[Page 664], Plate 26: STRUCTURE OF THE MOUTH AND THORAX.
In the original book: STRUCTURE OF THE MOUTH, &C.