EXPLANATION OF PLATE 38 (XXXVIII) 



Figs. 1, 3, 5, 6, X 15; Figs. 2, 4, X 25; Figs. 7-16, X 70; Fig. 17-19, X 100; Figs. 20-22, X, 12. 

 Figures 1, 3. — Involutina anguillae (Hoglund). 



Challenger Sta. 24, West Indies. (390 fathoms) 

 Referred by Brady to Ammodiscus incertus (d'Orbigny). Hoglund (Zool. Bidr. fr. Uppsala, Vol. 26, 1947, 

 p. 128) regarded these figures as most probably representing his West Indian Ammodiscus anguillae. Loeblich 

 and Tappan (Jour. Wash. Acad. Sci., Vol. 44, No. 10, 1954, pp. 21-22) have shown Ammodiscus Reuss 1862 

 to be a junior synonym of Spirillina Ehrenberg 1843, comprising hyaline, calcareous forms. Agglutinated forms 

 such as anguillae Hoglund are referred to Involutina Terquem 1862 by Loeblich and Tappan (1. c. supra). 

 Figure 2. — Cornuspira incerta (d' Orbigny)? 



Challenger Sta. 332, South Pacific. (2200 fathoms) 

 Referred by Brady to Ammodiscus (see notes above). Brady's specimen is so small and his figure so indefinite 

 that until the material can be re-examined it seems preferable to query this identification. Loeblich and Tappan 

 (1. c. supra, 1954, p. 308, fig. 1) have examined d'Orbigny's types of Operculina incerta from Cuba and figured 

 a lectotype. They place the species in Cornuspira. 

 Figure 4. — Involutina intermedia (Hoglund)? (immature specimen). 

 Challenger Sta. 46, North Atlantic. (1350 fathoms) 

 Referred by Brady to his Pacific species, Ammodiscus tenuis. This appears to be a juvenile individual and 

 may perhaps be referable to Ammodiscus intermedius Hoglund 1947, from off the Swedish coast (1. c. supra, 

 1947, p. 126). See note above on Involutina. 

 Figures 5, 6. — Involutina tenuis (Brady). 



Challenger Sta. 168, N.E. coast of New Zealand. (1100 fathoms) 

 Referred by Brady to Ammodiscus, and transferred here to Invo utina in accordance with the findings of 

 Loeblich and Tappan. 

 Figures 7-9. — Glomospira gordialis (Jones and Parker). 



Figs. 7, 8. Challenger Sta. 5, Canaries, Atlantic. (2740 fathoms) 

 Fig. 9. Challenger Sta. 174B, Fiji, Pacific. (610 fathoms) 

 Referred by Brady to Ammodiscus. 

 Figures 10-16. — Glomospira charoides (Jones and Parker). 



Figs. 10-12, 15. Challenger Sta. 46, North Atlantic. (1350 fathoms) 

 Figs. 13, 14. Challenger Sta. 323, South Atlantic. (1900 fathoms) 

 Fig. 16. Challenger Sta. 218, North of Papua. (1070 fathoms) 

 Referred by Brady to Ammodiscus and to Glomospira Rzehak 1888 by Cushman, 1918, and Rhumbler, 1909. 

 Earlier (1895) Rhumbler referred this and the preceding species to his genus Gordiammina, a synonym of 

 Glomospira. 

 Figures 17-19. — Turritellella shoneana (Siddall). 



Challenger Sta. 1491, Kerguelen Islands, S. Pacific. (120 fathoms) 

 Referred by Brady to Ammodiscus. This is the genotype of Turritellella Rhumbler 1903 (Arch. f. Protist., 

 Vol. 3, p. 283). 

 Figures 20-22. — Turritellella spectabilis (Brady). 

 Porcupine, North Atlantic. (358 fathoms) 

 Referred by Brady to Ammodiscus and by Rhumbler to Turritellella (1. c. supra, 1903, p. 283). 



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