PLATE 110. 



AULOSPH^ERIDA. 



Diam. Page 



Fig. 1. Auloscena mirabilis, n. sp., . . . x 50 1628 



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., . . . . x 600 ■ 1628 



Terminal corona of a single radial tube. 



Fig. 3. Auloscena penicillus, n. sp.. . . . . x 200 1629 



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

 a brush-shaped radial tube. 



Fig. 4. Auloscena flammahunda, n. sp., . . . x 400 1629 



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., , . . . . x 600 1630 



Terminal corona of a single radial tube. 



Fig. 6. Auloscena tentorium, n. sp., . . . . x 400 1628 



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., . . . . . x 400 1629 



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., . . . . x 400 1628 



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

 radial tubes are united, instead of six. 



Fig. 9. Auloscena spectabilis, n. sp., . . . x 800 1628 



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., . . . . . x 300 1629 



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



Fig. 11. Auloscena verticillus, n. sp., . . . . x 400 1629 



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



