+Index+ 640–656 LIST OF ILLUSTRATIONS Several of the illustrations are printed from blocks for which I am indebted to learned societies or to individuals. The sources from which clichés were obtained are mentioned within square brackets. The names of donors of photographs or drawings are added after the descriptions of the figures. +Frontispiece.+ Charles René Zeiller. From a photograph given to me by Madame Zeiller. FIG. PAGE 377. _Cycas circinalis_. A. Malins Smith 2 378. _Cycas revoluta_. [G. R. Wieland.] 3 379. _Encephalartos horridus_ 3 380. _Cycas circinalis_. [Encyclopaedia Britannica.] 4 381. _Cycas revoluta_ and _Zamia Loddigesii_ 5 382. _Encephalartos Ghellinckii_. [Camb. Phil. Soc.] 11 383. _Cycas siamensis_. [Encyclopaedia Britannica.] 12 384. _Cycas circinalis_ 13 385. _Cycas Micholitzii_ and _Zamia angustifolia_ 14 386. _Encephalartos Altensteinii_; _Dioon edule_. S. M. Wadham. 15 387. Cycadean Fronds 16 388. _Zamia Wallisii_ 17 389. _Zamia integrifolia_. [Camb. Univ. Press.] 18 390. _Zamia Loddigesii_ 18 391. _Bowenia spectabilis_. [Encyclopaedia Britannica.] 20 392. _Cycas pectinata_, _C. Riuminiana_, _C. angulata_, _Encephalartos_, and _Stangeria_ 21 393. _Stangeria_, _Encephalartos_, and _Ceratozamia_ 22 394. _Macrozamia Preissii_. [Camb. Univ. Press.] 23 395. _Zamia floridana_. [G. R. Wieland.] 24 396. _Dioon edule_, _Cycas circinalis_, etc., _Encephalartos_, _Bowenia_, _Macrozamia_, _Microcycas_ 26 397. _Stangeria paradoxa_. [New Phytologist; A. G. Tansley.] 29 398. _Macrozamia_ 29 399. Cycadean foliar bundles 31 400. _Cycas Micholitzii_. [Camb. Phil. Soc.] 33 401. _Lyginodendron Landsburgii_. R. Kidston 37 402. _Lyginopteris oldhamia_. [Camb. Phil Soc.] 39 403–405. _Lyginopteris oldhamia_ 41, 44, 48 406. _Lyginopteris oldhamia_. F. W. Oliver 49 407. _Crossotheca Hoeninghausi_. R. Kidston and other sources 53