62 FORAMINIFERA 



Genus ASTRORHIZA Sandahl, 1857 

 Plate 2, figures 1-6 



Genoholotype, Astrorhiza limicola Sandahl 



Astrorhiza Sandahl, Ofv. Svensk. Vet. Akad. Forh., vol. 14, no. 7, 1857, 



p. 299. 

 Ammodiscus Carpenter and Jeffreys, Proc. Roy. See. London, 1870, p. 



159 (not Atmnodiscus Reuss, 1871). 

 Arenistella FiscHER and DE Folin, Les Fonds de la Mer, vol. 2, 1872, p. 



26 (genoholotype, A. agglutinans Fischer). 

 Astrodiscus F. E. Schultze, II Jahr. Comm. wis. Unt. deutsch. Meer in 



Kiel, vol. 1, 1875, p. 113 (genoholotype, A. arenaceus F. E. Schultze). 

 Haeckelina Bessels, Jen. Zeitschr., vol. 9, 1875, p. 265 (genoholotype H. 



gigantea Bkssels) . 



Test free, flattened or tubular, stellate or subcylindrical, com- 

 posed of a central chamber with communicating tubular portions 



EXPLANATION OF PLATE 2 



Astrorhizidae 



Fig. 



1, 2. Astrorhiza limicola Sandahl. X 5. (After H. B. Brady). Fig. 1, 



Exterior Fig. 2, Test partially laid open to show interior. 

 3, 4. Astrorhiza arenaria Norman. (After H. B. Brady). Fig. 3, Ex- 

 terior. X 5. Fig. 4, Portion of surface enlarged to show 

 structure of wall. X 65. 

 5, 6. Astrorhiza granulosa H. B. Brady. X 5. (After H. B. Brady). 



Fig. 5, Exterior. Fig. 6, Test laid open to show interior. 

 7-9. Rhahdannniva ahyssorum M. Sars. (After H. B. Brady). Fig. 7, 

 Test laid open to show interior. X 7. Fig. 8, Exterior. X 7. Fig. 

 9, Portion of surface enlarged to show structure of wall. X 40. 

 10-12. Rhabdariimina linearis H. B. Brady. (After H. B. Brady). 

 Fig. 10, Exterior. X 7. Fig. 11, Test laid open to show the in- 

 terior. X 7. Fig. 12, Portion of surface enlarged to show struc- 

 ture of wall. X 40. 

 Rhabdammina irregularis Carpenter. X 10. (After H. B. Brady). 

 Crithionina rot%indata Cushman. X 7. Test laid open to show cen- 

 tral chamber and tubes of the wall. 

 Crithionina viamiUa Goes. X 10. (After Goes). Fig. 15, Exterior. 

 Fig. 16, Test laid open to show interior and structure of wall. 

 Vanhoeffenella gaussi Rhumbler. Fig. 17 (After Heron-Allen and 

 Earland), showing protoplasmic body. X 50. Fig. 18, (After 

 type figure). X 28. 

 19. Masonella planulata H. B. Brady. X 3. (After type figure), a, 

 Exterior showing central chamber and arms; b, section. 



