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Family Struthiolariidae
Struthiolaria (Callusaria) aff. spinifera (Marwick).
1924 Struthiolaria spinifera Marw. Trans. N.Z. Inst., 55: 177, Pl. 13, fig. 3.
Differs from spinifera chiefly in the callus, which is a little heavier and rises higher just in front of the aperture. The callus is much lighter than in typical callosa.
Only one moderately well-preserved specimen has been collected; Callusaria is so variable that a range of specimens is needed for taxonomic work.
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Locality: N162/629, South branch of Whakatahine Stream, north-west of Brocken Range, basal beds (Altonian?).
Architectonica (Discotectonica) hokianga nom. nov.
1948. Architectonica (Discotectonica) marwicki Laws, Trans. Roy. Soc. N.Z., 77 (1): 149, Pl. 12, fig. 20 (not Architectonica marwicki Allan 1926, Trans. N.Z. Inst. 56: 338, Pl. 76, fig. 2).
Dr. C. R. Laws, Auckland University College, has invited the writer to rename this species.
One specimen, incomplete, with the base imbedded in matrix. The surface has ornament very similar to that of the specimen described and figured as Architectonica (Discotectonica) n.sp., by Marwick (1931: 103, Pl. 10, fig. 179). Each whorl has four evenly spaced narrow spiral grooves with the interspaces divided by weak distant axial grooves, and bears a strong moniliform cord at the periphery.
Diameter, about 10 mm.; height, about 4 mm.
Locality: N162/630, Upokongaruru Stream, east of the end of the Motukai Road, about 500 feet above basement. Foraminifera collected from the same locality are Clifdenian, but closely underlying beds are probably Altonian.