PLATE 110. 



AULOSPH^ERIDA. 



Fig. 1. Auloscena mirabilis, n. sp., 



The complete shell, representing a regular latticed sphere, which is 

 composed of equal hexagonal pyramids ; the top of each pyramid 

 bears a radial tube with a terminal corona. 



Fig. 2. Auloscena mirabilis, n. sp., 



Terminal corona of a single radial tube. 



Fig. 3. Auloscena penicillus, n. sp., 



A single tent-shaped elevation or six-sided pyramid, bearing on the top 

 a brush-shaped radial tube. 



Fig. 4. Auloscena Jlammabunda, n. sp., 



A single radial tube, with a centripetal free prolongation at the base and 

 a verticil of undulate terminal branches at the distal end. 



Fig. 5. Auloscena serrata, n. sp., . 



Terminal corona of a single radial tube. 



Fig. 6. Auloscena tentorium, n. sp., : 



A single radial tube, with a centripetal prolongation at the base and a 

 terminal corona at the distal end. 



Fig. 7. Auloscena gigantea, n. sp., . 



Basal part of a radial tube, exhibiting the internal axial thread and its 

 connection with the six tubes, which form the edges of a flat six- 

 sided pyramid (usually more elevated than the figure exhibits). 



Fig. 8. Auloscena spectabilis, n. sp., 



Apex of an abnormal pyramid (sometimes occurring), in which seven 

 radial tubes are united, instead of six. 



Fig. 9. Auloscena spectabilis, n. sp., 



Basal part of a radial tube, in the top of a flat six-sided pyramid ; above 

 it the distal part of the same tube with its terminal corona (middle 

 part of the tube wanting). 



Fig. 10. Auloscena verticillus, n. sp., .... 



Apex of a six-sided pyramid, seen from the inside. 



Fig. 11. Auloscena verticillus, n. sp., 



Distal part of a single radial tube, with the terminal corona. 



Diam. 

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