S5

Disolenia zanguebarica (Ehrenberg)

Trisolenia zanguebarica Ehrenberg, 1872a; p. 321; 1872b, p. 301, pl. x, fig.11

Disolenia zanguebarica (Ehrenberg), Nigrini, 1967, p. 20, pl. 1, fig. 6

DESCRIPTION "Similar to Disolenia quadrata, but tubules, of which there are 4-6 (usually 5), are broadly conical, narrowing distally; hence, there is no distinct break in shell contour at the bases of the tubules. Pores rather larger than those of D. quadrata." (from Nigrini, 1967).

DIMENSIONS "Diameter of shell 90-146mu. Breadth of outer aperture of tubules 18-36mu." (from Nigrini, 1967).

REMARKS

1. For a more complete synonymy see Nigrini, 1967. Plate 1, figure 3

S6 Disolenia zanguebarica (Ehrenberg)

RECENT DISTRIBUTION

1. Nigrini, 1967, fig. 7; "Indian Ocean occurrences - D. zanguebarica is sparsely distributed in low latitudes and is absent from middle latitude samples. Maximum abundances (up to 3 percent of the described population) occur in the western tropics."

2. Molina-Cruz, 1975, Code S39: counted together with D. quadrata and used in factor analysis of southeast Pacific assemblages; cf. Appendix 10 for percent S39 at each station.

3. Morley, 1977 (Disolenia sp.); cf. D. quadrata.