Tertiary Foraminif era from Borneo. 255 



strong resemblance to the characters of N. Lamarcki, the 

 European companion of JSF. laevigata. N. javanus, form A, 

 differs from N. Lamarcki chiefly in its fewer convolutions 

 and its rather more robust habit of growth. 



Here and there in the same slides with N. javanus, form A, 

 we have met with vertical sections of rather smaller Nummu- 

 lites less robustly built than their companions and with the 

 initial chambers measuring -12 millim. in width. We are 

 inclined to think that these Nummulites are variants of 

 N. javanus, form A, corresponding to the variety of N. La- 

 marcki figured by d'Archiac and Haime in pi. iv. fig. 16 of 

 their monograph. 



Occurrence. N. javanus (both forms) occurs in our material 

 only in two pebbles from the bed of the River Malinam. In 

 one pebble particularly it occurs in great profusion. 



3. Nummulites Djokdjokartte, K. Martin (sp.). 

 Nummulites Lamarcki, R. D. M. Verbeek, " Tertiarformation von 



Sumatra," Pakeontographica, 1880, Suppl. 3, Lief. 8, Theil 1, p. 23 



(noo Archiac and Haime). 

 Nummulina Djokdjoharta, K.Martin, "Tertiiir-Versteinerungen vom 



ostlichen Java," Samml. geol. Reichs-Mus. Leiden, 1881, no. 2, 



p. 110, pi. v. figs. 9-11. 

 Nummulites Joc/jukertce, R. D. M. Verbeek, " Voorloopig Bericht over 



Nummulieten, Orbitoiden en Alveolinen van Java, &c," Nat. 



Tijdscbr. v. NederL-Indie, 1891, vol. li. pp. 116, 117, figs. 1-3 on 



plate. 

 Nummulites Joguiakartee, R. D. M. Verbeek and R. Fennema, Descrip- 

 tion geologique Java et Madoura, 1896, vol. i. pi. viii. figs. 114-119, 



vol. ii. p. 1152. 



To this species we refer certain specimens which occur in 

 the material collected by Prof. Molengraaff. This material, as 



Nummulites DjoMjokartce, K. Martin (sp.). 

 (Magnified 12 times.) 



already stated, consists of small boulders and a few micro- 

 scopic sections cut from two of them. On chipping one of 



