PLATE 101. 



PlLEODINIDA, CANNORRHAPHIDA et AULACANTHIDA. 



Diam. Page 



Fig. 1. Phceocolla primordialis, n. sp., . . . . x 300 1544 



Central capsule, isolated. The double contoured outer membrane ex- 

 hibits only one opening, with a radiate operculum and long proboscis. 

 The granular protoplasm encloses clear spherical vacuoles. The 

 sphaeroidal nucleus contains irregular amoeboid nucleoli. 



Fig. 2. Phceodina tripylea, n. sp., . . . . . x 300 1545 



A central capsule in self-division, with two elliptical nuclei. The 

 astropyle is already bisected and has two proboscides. 



Fig. 3. -Cannorrhaphis spinulosa, n. sp., . . x 100 1552 



A complete specimen with two central capsules, each of which contains 

 two nuclei. The alveolate calymma contains a dark phseodium and 

 is surrounded by tangential tubular needles. 



Fig. 4. Cannorrhaplw 's spinulosa, n. sp., . . . . x 300 1552 



A single tangential tube. 



Fig. 5. Cannorrhaphis spathillata, n. sp., . . . x 300 1552 



A single tangential tube. 



Fig. 6. Aulactinium actinastrum, n. sp., . . . . x 100 1574 



A complete specimen, seen in optical meridional section. In the centre 

 the spheroidal central capsule, with its double membrane and three 

 openings (above two lateral parapyla3, below the large astropyle with 

 its radiate operculum). The capsule encloses numerous spherical 

 vacuoles and two hemispherical nuclei, each with numerous nucleoli. 

 The anterior half of the capsule is surrounded by the blackish phse- 

 odium. The spherical calymma contains numerous globular alveoles 

 and is pierced by the radial tubes, the proximal ends of which are 

 in contact with the surface of the central capsule (compare PI. 103, 

 % !)• 

 Fig. 7. Aulactinium actinastrum, n. sp.. . . . x 300 1574 



A single radial tube. 



Fig. 8. Aulactinium actinclium, n. sp., . . . x 200 1574 



A single radial tube. 



Fig. 9. Mesocena stellata, n. sp., . . . . x 600 1557 



A single annular piece of the skeleton 



Fig. 10. Dictyocha stapedia, n. sp., . . . . . x 300 1561 



A complete specimen, observed living at Ceylon. In the centre is 

 visible the large, spheroidal, tripylean central capsule, with its 

 three openings, containing a large nucleus with numerous nucleoli. 

 Its oral half is covered Avith the dark phseodium. The voluminous 

 spherical calymma contains numerous globular alveoles and its 

 surface is covered with scattered, stirrup-shaped pieces of the 

 skeleton. Numerous free pseudopodia arise from the surface. 



Dictyocha stapedia, n. sp., . . . . x 800 1561 



A single piece of the skeleton, from above. 



Dictyocha stapedia, n. sp., . . . . x 800 1561 



A twin piece of the skeleton. 



Dictyocha medusa, n. sp., . . . . . x 800 1560 



A single piece of the skeleton, from the side. 



Dictyocha medusa, n. sp., . , . . . x 800 1560 



A single piece of the skeleton, from above. 



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