N77

Lamprocyclas maritalis Haeckel polypora Nigrini

Lamprocyclas maritalis polypora Nigrini, 1967, p. 76, pl. 7, fig. 6

DESCRIPTION "Similar to Lamprocyclas maritalis maritalis, but with a greater number abdominal pores (11-14 on a half-equator, 4-6 in a vertical series), and shell usually thinner-walled and more delicate. Abdomen tends to expand a little distally, thus becoming truncate conical rather than cylindrical." (from Nigrini, 1967). See also remarks for L. maritalis maritalis.

DIMENSIONS "Total length (excluding apical horn) 128-164 microns. Length of cephalis 27-36 microns; of thorax 45-63 microns; of abdomen (excluding peristome) 45-72 microns. Maximum breadth of thorax 81-100 microns; of abdomen 119-136 microns." (from Nigrini, 1967).

Plate 25, figure 5

N78

RECENT DISTRIBUTION

1. Nigrini, 1967, fig. 40; "Indian Ocean occurrences - L. maritalis polypora is rare in both low and middle latitudes, occurring in somewhat greater numbers (up to 4% of the described population) in the former."

2. Nigrini, 1970, fig. 34; belongs to a tropical assemblage derived by recurrent group analysis of North Pacific sediments.

3. Molina-Cruz, 1975, Code N16; counted together with L. maritalis ventricosa and used in factor analysis of southeast Pacific sediments; cf. Appendix 10 for percent N16 at each station.