PLATE CIII. 



Fig. 1. — ZtTECHEEIA INCONSTANS, &. BucJcman. 



Fig. 1. — A more precise delineation of part of the suture-line of the specimen depicted in PI. L, figs. 4, 5, to replace 

 fig. 7 of that plate, snowing that L has a terminal lobule ecto-brachysceles. (Compare PI. L, fig. 10.) (Page 297.) 



Fig. 2. — Zubchebia paevispinata, S. Buckman. 

 Fig. 2. — The superior lateral lobe of the specimen illustrated in PI. XLIX, figs. 18 — 20, showing a distinctly ecto- 

 brachysceles terminal lobule. (Page 296.) 



Fig. 3. — Sonninia multispinata, S. Buckman. 

 Fig. 3. — Parts of the septal outlines of the specimen drawn in PI. L.figs. 11 — 13, showing that the superior lateral lobes 

 are not identical on both sides. That on the left side (the fossil held with the truncation towards the eye, the right in the 

 figure) has the terminal lobule ultra-axial and ecto-brachysceles ; that on the right side (left in figure) has this lobule 

 intra-axial and endo-brachysceles. (The circles mark the positions of spines.) (Page 425.) 



Fig. 4. — Sonninia locuples, S. Buckman. 

 Pig. 4, — Suture-line of the specimen depicted in PI. L, figs. 16 — 18, to supplement fig. 18. (Page 431.) 



Fig. 5. — Sonninia modesta, S. Buckman, var. 

 Fig. 5.— Suture-line of the specimen depicted in PI. LXVTII. (Page 422.) 



Fig. 6. — Sonninia subcostata, S. Buckman. 

 Fig. 6.— Suture-line of the type-specimen depicted in PI. LXXI, figs. 4, 5. (Page 330.) 



Fig. 7. — Sonninia alteenata, S. Buckman. 

 Fio-. 7. — A more complete delineation of the suture-line of the type-specimen shown in PI. LXXVII, figs. 3 — 5, to 

 supplement fig. 5. (Page 424.) 



Fig. 8. — Sonninia diveesa, 5. Buckman. 

 Fig. 8. — Suture-line of the type-specimen drawn in PI. LXXXIII, figs. 1, 2. (Page 399.) 



Fig. 9. — Sonninia l^vigata, S. Buckman. 

 Fig. g.-_The superior lateral lobe of the specimen illustrated in PI. LXXXII, figs. 5, 6 — a somewhat imperfect sketch 

 owing to manner of fossilisation. (Page 399.) 



Fig. 10. — Sonninia nt/da, S. Buckman. 

 Fig. 10. — Suture-line of the type-specimen shown in PI. LXXXII, figs. 3, 4. (Page 402.) 



Fig. 11. — Sonninia simplex, S. Buckman. 

 Fig. 11. — Suture-line of the type-specimen drawn in PI. LXX, figs. 2, 3. (The "fig. 2" has been omitted in the 

 lettering; it is the right-hand bottom figure.) (Page 423.) 



Figs. 12, 13. — Sonninia sttbstbiata, S. Buckman. 

 Fig. 12. — Suture-line of a specimen from Stoke Knap, near Beaminster. Collected by Mr. E. Wilson. Now in my 

 cabinet. (Page 406.) 



Fig. 13. — A somewhat imperfect sketch of the superior lateral lobe of the type-specimen, PI. LXXI, figs. 6, 7. 



Fig. 14. — Sonninia dominica, S. Buckman. 

 Fig. 14. — A more precise delineation of the suture-line of the specimen figured in PI. LXIX, figs. 1 — 3, under the 

 name Sonn. dominans, to replace fig. 3. (The explanation of the plate should be corrected to Sonn. dominica.) 

 (Page 410.) 



Fig. 15. — Sonninia semispinata, S. Buckman. 

 Fig. 15. — Parts of the suture-line of the type-specimen illustrated in PI. LXXVII, figs. 1, 2. (Page 416.) 



Fig. 16. — Sonninia biplicata /8. 

 Fig. 16.— The suture-line of the specimen depicted in PI. LXXVIII, figs. 4, 5. (Page 417.) 



Fig. 17. — Sonninia ceassibullata, <S. Buckman. 

 Fig. 17.— Suture-line of the type-specimen drawn in PI. LXXX, figs. 1, 2. (Page 400.) 



Fig. 18. — Sonninia cbassicostata, S. Buckman. 

 Fig. 18.— The superior lateral lobe of the type-specimen (PI. LXXX, figs. 4, 5), showing an unusual character, the 

 terminal lobule being ecto-brachysceles. (Page 398.) 



Fig. 19. — Sonninia, sp. 

 Fig. 19. — Portions of the septal outlines of a specimen allied to Sonninia subsimplex, but more ornately lobate. (Sec 

 page 440.) This is a copy of a photograph. 



Fig. 20. — Sonninia, sp. 

 Fig. 20.— Portions of the septal outlines of the specimen figured in PI. LXVII, figs. 3—5, to supplement fig. 5. This 

 specimen is allied to the renovata- and dominans-series. (See page 438.) 



Fig. 21. — Sonninia eeclinans, S. Buckman. 

 Fig. 21. — Septa of the specimen figured in PI. LXV, figs. 3, 4, as Sonn. crassispinata, which should now be altered. 

 (Page 421.) 



Fig. 22. — Sonninia paevicostata, S. Buckman. 

 Fig. 22.— Superior lateral lobe of the type-specimen illustrated in PI. LXXV, figs. 3, 4. (Page 396.) 



Fig. 23. — Sonninia spinosa, S. Buckman. 

 Fig. 23. — Suture-line of the specimen mentioned at page 365, showing L with an axial terminal lobule practically 

 isosceloid. (Page 394.) 



Fig. 24. — Sonninia off. dominans, S. Buckman. 

 Fig. 24.— Part of the septal outline of the specimen figured in PI. LXVII, figs. 1, 2. (Page 438.) 



(It should be noted that to facilitate comparison all suture-lines in this plate and in the other parts of the work have 

 [except through oversight] been placed with the peripheral portion to the left hand. This has necessitated the reversing 

 of some of the tracings.) 



