Bull. not. Hist. Mus. Lond. (Zool.) 59(2): 107-124 



Issued 25 November 1993 



Taxonomic revision of some Recent 

 agglutinated foraminifera from the Malay 

 Archipelago, in the Millett Collection, The 

 Natural History Museum, London 



P. BRONNIMANN t 



9G, Chemin de Bedex, 1226 ThonexIGeneva, Switzerland 



J.E.WHITTAKER 



Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5 BD 



Synopsis. Eleven species of Recent agglutinated foraminifera in the Millett Collection from the Malay Archipelago, 

 have been re-examined and revised systematically. They were originally described and illustrated in 1899 and 1900 

 with excellent lithographic drawings in the hand of Millett. With rare exceptions, the actual figured specimens, 

 though not marked as such, have been recognised in his Collection. The species are here redescribed, re-illustrated 

 by SEM photography and, where necessary, supplemented by new data, notably from similar environments in 

 Brazil. All, with the exception of Paratrochammina simplissima (Cushman & McCulloch) and possibly Trocluim- 

 mina? milletti sp.nov., are brackish-water forms. 



New taxa arc Trunculocavus durrandi gen. et sp.nov. and Trochammina? milletti sp.nov. A lectotype is designated 

 for Acupeina triperforata (Millett), while Ammobaculites salsus var. distinctus Cushman & Bronnimann is elevated 

 to specific rank and placed in Ammotium. All the species reviewed in this paper belong to the Suborder 

 Trochamminina. 



INTRODUCTION 



Durrand (1898) gives what locality information there is about 

 the Malay samples from which Fortescue William Millett 

 made his classic study of the foraminifera. Durrand had for 

 several years, out of his own interest, obtained small samples 

 from around the SW Pacific and had examined them for the 

 microscopical fauna and flora. In 1889 he had succeeded in 

 getting the Netherlands India Steam Navigation Company 

 (then controlled by the British India Steam Navigation Com- 

 pany) ... 'to instruct the commanders of their fleet plying 

 about the islands of the Archipelago, to collect bottom from 

 each port of call'. The 'cleaned material' was picked over first 

 by Durrand and then the foraminifera were determined by 

 Millett and published (1898-1904) in 17 parts in the Journal 

 of the Royal Microscopical Society. In all, 468 species and 

 varieties were listed by Millett, 45 of them new. The descrip- 

 tions were accompanied by 19 plates of quite exceptional and 

 accurate drawings, from Millett's own hand. 



The samples came from anchor mud where the ships were 

 moored, more or less close inshore ... 'in about 12 or 14 

 fathoms' (22-25 m). Unfortunately, a number of labels on 

 the flasks of sediment became illegible through getting 

 soaked by leakage, so the locality information is somewhat 

 sketchy. The original samples each contained about 4 lbs 

 (1.8 kg) of solid matter. 



The material came from two areas. Area 1 ('from Celebes 

 in the north and west, to Java in the south and New Guinea, 



t Deceased 6.1.1993. 



©The Natural History Museum, 1993 



Aru, and the Islands in the east, including such stations as 

 Banda, Amboina, Flores, Sumbawa and Timor') contains 

 stations 1-16; area 2 ('Singapore in the north, Banka in the 

 south, Sumatra in the west, and Borneo in the east') contains 

 stations 17-31. 



As part of a major revision of shallow-water agglutinating 

 foraminifera of the Indo-Pacific region (see also Bronnimann 

 et al. 1992), eleven species belonging to the Trochamminina 

 are here redescribed, and illustrated by scanning electron 

 microscopy for the first time. The fauna has, for the most 

 part, strong affinities with the foraminifera of brackish, 

 mangrove sediments from other parts of the tropics, notably 

 Brazil. Comparison is therefore made with material described 

 by us (Bronnimann & Zaninetti, 1984a; b; Zaninetti et al., 

 1977) from the mangroves of Guaratiba, Acupe and Baia de 

 Sepetiba, Brazil. 



For a recent review of mangrove foraminifera in general 

 and their potential for palaeoenvironmental interpretation, 

 the reader is referred to an important paper by Culver (1990). 



LOCALITY INFORMATION 



Of relevance to the present revision are the following stations 

 from whence the specimens came; where the name of the 

 station is not mentioned, the label has become illegible. The 

 sample descriptions are in Durrand's own words. 



Area 1 Station 2 [no locality]. Plastic mud, brownish 

 tinted, rich in floatings. 



