204 Hems ley. — Chelonespermum and Cassidispermum, 
same group of islands. Mr. Horne’s Fiji species is likewise 
quite different in foliage, and the Museum seeds of unknown 
origin, described below, increase the number of species to four, 
which I refer to Chelonespermum , and one which I have called 
Cassidispermum. 
In the Solomon Islands these seeds bear a name signify- 
ing turtle-seed, which is a most appropriate designation, for 
they are so much like miniature turtles as to at once suggest 
the name. And I have chosen the Greek equivalent to 
designate the genus. 
Considering the size and singularity of these seeds it seems 
surprising that nothing more is known of them. Almost 
every part of Polynesia has been so fully explored by various 
expeditions that one would have expected these objects to 
have attracted special attention. Possibly they are com- 
paratively rare, though Mr. Comins states that he was told 
that C. minor was plentiful in the island of San Cristoval. 
Possibly, too, flowering specimens of some of them, at least, 
have been described and referred to existing genera. Never- 
theless, I venture to found two new genera for them, partly 
because I believe they deserve generic rank, and partly 
because publication of descriptions and drawings may lead to 
further knowledge. 
The natural order Sapotaceae has occupied the attention of 
several botanists since their publication in Bentham and 
Hooker’s Genera Plantarum, in 1876, including Professor 
Hartog 1 , Dr. W. Burck 2 , Dr. L. Pierre 3 , and Dr. H. Baillon 4 . 
The last named botanist monographs the order, so far as 
genera are concerned, and he defines sixty-four genera as 
against twenty-four by Bentham and Hooker. Baillon 
groups his genera in three numerically very unequal series, 
namely: — 1. Bumelieae, fifty-four genera; 2. Illipeae, nine 
genera; and 3. Mimusopeae, restricted to the genus Mimusops. 
1 Journal of Botany, 1878 and 1879. 
2 Annales du Jardin Botanique de Buitenzorg, vol. v. 1886. 
3 Notes Botaniques: Sapotaceae, 1890. 
4 Histoire des Plantes, vol. v. 1891. 
