TROPICAL PACIFIC FORAMINIFERA OF ALBATROSS 



35 



cases a pair of such bifid teeth opposite one another; surface of the 

 test dull, somewhat roughened. Length, 1.25 mm. ; breadth, 0.6 mm. ; 

 thickness, 0.25 mm. 



The typical form of the species is extremely common at some of the 

 South Pacific stations, especially about the Fiji Islands, where it 

 occurs off Levuka, 12 fathoms ; Nairai, 12 fathoms ; Viva Anchorage, 

 3 fathoms; and Mokaujar Anchorage; as well as at a station locality 

 not given, but in 40 to 50 fathoms. Besides these Fiji stations it 

 occurs at Vavau Anchorage, Tonga Islands ; off Rotonga, 7 fathoms ; 

 at Port Lotten, Kersail, Caroline Islands ; and at Guam Anchorage, 

 Ladrone Islands, 21 fathoms. In the Albatross samples it occurs at 

 Stations H3843, off Point Venus, Tahiti Island, 807 fathoms ; H3930, 

 off Anu Anuraro Atoll, Paumotus, 438 fathoms ; and H3992, Schisch- 

 marev Pass, Marshall Islands, 482 fathoms. 



Table 7. — Spiroloculina grateloupi — material examined 



1 Key to abbreviations is given in Table 1. 



SPIROLOCULINA GRATELOUPI d'Orbigny SERRULATA, new variety 



Plate 9, Figukes 1 a, b 



Variety differing from the typical in the peripheral margins which 

 in the variety are beautifully serrate with a series of irregularly 

 shaped teeth. 



Holotype of variety. — Cushman Coll. No. 14748, from Viva An- 

 chorage, Fiji Islands, in 3 fathoms. 



The figured specimen shows the holotype, which has the teeth very 

 well developed along the edges. There seem to be many gradations 

 between this and the form in which these edges are only roughened. 

 The variety was only found at the type locality, but there it is 

 abundant. 



SPIROLOCULINA GRATELOUPI d'Orbigny ACESCATA, new variety 



Plate 9, Figubes 2 a, b 



Spiroloculina canaliatlata Cushman (not d'Orbigny), Carnegie Inst. Wash- 

 ington Publ. 342, p. 57, pi. 21, fig. 1, 1924. 



