On Cretaceous Cephalopoda from Zululand. 



241 



diameter, but develops the typical ornameut, with distinct umbilical 

 tubercles, on the outer whorl. It has the following dimensions : 



Diameter . . .59 mm. 



Height of last whorl . 54 per cent, of the diameter 



Thickness . 27 



Umbilicus 13 



Both the specimens show the suture-lines well and have portions. 

 of the body-chambers preserved, the former rather less than the last 

 half of the outer whorl, the. larger specimen a little over half a whorl. 



TEXT-FIG. B. 1. Pseudoschloenbachia umbulazi, Baily sp., Umtamvuna River, 

 Natal (B.M. No. C19427). Sectional outline of inner whorls (at diameter 

 = 32 mm.). 2-6. Pseudoschloenbachia umbulazi, Baily sp., Umkwelane 

 Hill, Zululand (Specimen No. 5494) (p. 240). 2. Ventral aspect of inner 

 whorls showing chevrons at D = 12 mm. 3. Lateral view of innermost 

 whorls at D = 5 mm. 4. Ditto, suture-line at D = 2 mm. 4A. Ditto, 

 suture-line at D = 4 mm.. 5. Ditto, internal suture-line at 4 mm. 

 6. Ditto, internal suture-line at 16 mm. 7. Pseudoschloenbachia umbulazi 

 (Baily) var. acuta, nov. Suture-line of type-specimen (No. 5450) from 

 Umkwelane Hill (p. 241). 8. Pseudoschloenbachia griesbachi (Crick MS.), 

 Umtamvuna River, Natal (B.M. No. C19428). Suture-line of type-specimen 

 at D = 60 mm. (reduced 5). The edge should be minutely frilled. 

 9. Aconeceras nisoides, Sarasin, sp. Suture-line of specimen No. 5119 from 

 Powell's Camp, Upper Catembe (p.311). 10. Schloenbachia i-arians(Sowerby), 

 Cenomanian, Warminster, Wilts. (Coll. L. F. Spath). Internal suture- 

 line at diameter = 15 mm. All the figures except 8 are enlarged. 



An immature third example (No. 5450) (PI. XX, fig. 3) of 24 mm. 

 diameter, and wholly septate, agrees with the first specimen described 

 and with Baily's type-figure in the distinct costation, :;: but has a thinner 

 section at an equal diameter and an acutely fastigate periphery. It 

 may be separated as- 



var. ACUTA, uov. 



Mr. Woods stated that P. umbulazi appeared to be confined to 

 Poudoland. In addition to the present specimens from Zululand, 



* There is no tubercle on the ribs at the middle of the side, as might wrongly 

 be inferred from the side-view given in PI. XX, fig. 3. 



