[2] The Figures in the text, which, with exception of about twenty, have all been drawn expressly for this book, are the work of the above-mentioned artists, together with Mr. Coombe and Miss Suft.
[3] Life and her Children, p. 135.
[4] Amphioxus lanceolatus (amphi both, oxus sharp).
[5] For this drawing, and also those of [Figures 1] and [4], I am indebted to Professor A. C. Haddon; the larval form A is the young of Clavelina, found at Torquay.
[6] Petromyzon (petra, stone; myzo, to suck).
[7] Myxine.
[8] Cyclostomata (cyclos, circle; stoma, mouth).
[9] Called conodonts, and found in Lower Silurian rocks earlier than any bones of true fish.
[10] Carcharias glaucus.
[11] Homocercal.