540 Professor Schicarz — Eartli-movemenfs, S. Africa. 



Mr. A. H. Malpas, of TJuiversity College, Heading, for photographing 

 the specimens. 



EXPLANATION OF PLATES XXV AND XXVI. 

 Plate XXV : Cidaris faringdonensis, Wright. 



Fig. 1. Paucigranulate j^late from adapical cycle (var. typica). 



2. Average plate (same cycle) of var. typica. 



3. Multigranulate plate (same cycle), var. maxima (type). 



4. Intermediate form (var. ti/pica) between Figs. 1 and 2. 



5. Two associated plates from near peristome (var. maxima), showing 

 elliptical scrobicules. 



6. Mid-zone plate of var. typica. 



7. Plate from upper part of test (var. typica) with half an ambulacrum 

 attached. 



8. Exceptionally high plate (adapical cycle) of var. typica. 



9. Adapical plate of small specimen. 



10. Genital plate (probably referable to C. faringdonensis). 



11. Ocular plate (probably referable to C .faringdonensis) . 



12. Smallest plate found. 



13. Abnormal plate with two cycles of scrobicular tubercles. 



14. Kadioles : [a) waterworn at distal end ; (6) average specimen 

 with rudimentary corolla ; (c) showing proximal end unworn ; 



(d) lai'gest radicle found ; [e) somewhat thick radiole ; (/) regularly 

 cylindrical form ; {g) entirely smooth radiole, a variant, not due 

 to erosion. 

 All the figures are reproduced at about 1\ times natural size. 



Plate XXVI : Cidaris coxwellensis, n.sp. 



Fig. 1. The type, adapical view (var. typica). 



2. The same, adoral view. 



3. The same, lateral view. 



4. Segment of small specimen (var. typica). 



5. Connected fragment, showing ambulacrum (var. typnca). 



6. Type of var. major, showing sulci between the miliaries. 



7. Plate with characters intermediate between var. typica and 

 var. major. 



8. Tall adapical plate (var. typica). 



9. Average adapical plate, showing smooth parapet and small scrobicular 

 tubercles (var. typica). 



10. Somewhat eroded plate of var. viajor, showing broad miliary zone. 



11. Selected radicles: {a) from adoral surface, rough side of radiole; 

 (6) from higher region, smooth side ; (c) from similar region, 

 rough side, showing unequal inflation and rudimentary corolla ; 



(d) longest complete radiole found, very little inflated, rough side ; 



(e) radiole constricted towards distal end; (/) similar to (b), but 

 showing rough side ; (g) similar radiole, with proximal end well 

 preserved ; (h) similar to (a), but showing smooth side. 



Fig. 3 is of the natural size, all the others are IJ times natural size. 



II. — Post-Jurassic E^rth-movlmknts in South Africa. 



By E. H. L. SCHWARZ, Professor of Geology, Rhodes University College, 



South Africa. 



MR. BULLEN NEWTON lias recently determined the fossils 

 found by iny students and myself in the Alexandria Beds near 

 Port Elizabeth to be of Mio- Pliocene age; the full memoir will 

 shortly be published in the Records of the Albany Museum, 



