PLATE 115. 



ClRCOPORIDA. 



Diam. Page 



Fig. I. Circoporus sexfuscinus, n. sp., . . . . x 100 1695 



The cruciform mouth is visible in the upper part of the figure, to the right. 



Fig. 2. Circoporus sexfuscinus, n. sp., . . . x 200 1695 



A single radial spine, with four cruciate pores at the base. 



Fig. 3. Circoporus sexfuscinus, n. sp., . . . . x 600 1695 



The radiate operculum of the central capsule, with the proboscis. 



Fig. 4. Circospathis furcata, n. sp., . . . . x 100 1696 



Five of the nine spines are visible, two others (on the upper face) broken 

 off. Between the latter the pentagonal mouth (with five teeth). 



Fig. 5. Circospathis furcata, n. sp., . , . . x 300 1696 



The mouth with its five teeth. 



Fig. 6. Circospathis furcata, n. sp., . . . x 400 1696 



A piece of the shell with a radial spine. 



Fig. 7. Circospathis furcata, n. sp., . . x 400 1696 



Vertical section through the base of a radial spine, to show the central 

 funicle. 



Fig. 8. Circogonia dodecacantha, n. sp., . . , x 100 1698 



The central capsule with the elliptical nucleus (to the right) and the 

 dark phseodium (to the left) are visible, in the upper part (to the 

 left) the mouth of the shell, with six teeth. 



Fig. 9. Circogonia dodecacantha, n. sp., . . x 400 1698 



A fragment of the shell, exhibiting its peculiar structure (needles tan- 

 gentially scattered in the cement of the porcellanous substance), and 

 a circle of nine pores around the base of a broken spine. 



Fig. 10. Circospathis tetrodonta, n. sp., . x 400 1697 



The mouth with four teeth, in profile view. 



