Volume 78, 1950

List of Plates
| R. Speight | Facing Page |
| Plates 1 and 2 | 8 |
| C. A. Fleming | |
| Plates 3–7 | 32 |
| L. B. Moore | |
| Plates 8 and 9 | 48 |
| Edmund D. Gill | |
| Plate 10 | 64 |
| J. T. Salmon | |
| Plate 11 | 69 |
| H. Barraclough Fell | |
| Plate 12 | 84 |
| B. M. Bary and R. O. Stuckey | |
| Plate 13 | 88 |
| Edwin D. Hatch | |
| Plates 14–18 | 104 |
| C. A. Fleming | |
| Plates 19, 20 | 130 |
| Plate 24 | 246 |
| Plate 25 | 254 |
| Plates 26–30 | 266 |
| E. S. Gourley | |
| Plates 21–23 | 182 |
| A. C. Amies | |
| Plate 31 | 278 |
| M. K. Finlayson | |
| Plates 32–35 | 286 |
| B. M. Bary | |
| Plate 36 | 310 |
| Plates 37–39 | 318 |

| A. R. Lillie | |
| Plate 40 | 334 |
| Thomas Hill Easterfield | 381 |
| C. Borland. | |
| Plates 41–44 | 392 |
| F. R. Nurse. | |
| Plates 45–49 | 416 |
| M. Gage. | |
| Plates 50–53 | 424 |
| D. S. Coombs. | |
| Plate 54 | 432 |
| J. E. Morton. | |
| Plate 55 | 456 |
| Plate 56 | 464 |
| J. Searle. | |
| Plates 57 and 58 | 480 |
| J. Marwick. | |
| Plate 59 | 482 |
| W. Martin. | |
| Plate 60 | 496 |
| A. L. Poole. | |
| Plate 61 | 504 |
| J. T. S. Baylis. | |
| Plates 62–67 | 512 |
