PLATE 115. 



CntCOPORIDA. 



Fig. 1. Circoporus sexfuscinus, n. sp., 



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



Fig. 2. Circoporus sexfuscinus, n. sp., . . . . 



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



Fig. 3. Circoporus sexfuscinus, n. sp*, 



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



Fig. 4. Circospathis furcata, n, sp., 



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.. 

 The mouth with its five teeth. 



Fig. 6. Circospathis furcata, n. sp., 



A piece of the shell with a radial spine. 



Fig. 7. Circospathis furcata, n. sp., 



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

 funicle. 



Fig. 8. Circogonia dodecacantha, n, sp., . 



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

 dark phaeodium (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., 



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., 



The mouth with four teeth, in profile view. 



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