Geology. — "07i some fossils from Celebes, believed to belong io 

 the Olicjocene." By Prof. K. Martin. 



(Communicated in the meeting of June 30, 1917). 



Mr. G. F. Di)LT,FUs ^) has described a num'oer of fossils 

 given him for examination by Mr. E. C. Abrndanon. Among the 

 conclusions derived .by this author from these fossils the principal 

 one is: "Nous nous croyons done fondé a reconnaitre avec certitude 

 pour la premiere fois, la presence de l'Oligocène dans I'lnsnlinde". 

 The fossils on which this judgment is based originate for the 

 greater part from the alluvium in the neighbourhood of Enrekang 

 on the lower course of the river Saadang in Celebes, w^hile 

 three of them were found in limestone, forming part of a ridge 

 east of the Saadang and south east of Enrekang. These 

 latter came from two different finds, from the Boentoe Képé 

 and from the B. L e w o r o n g ^). That all these fossils would 

 originate from the same stage cannot be proved, of course, the 

 less so as they were not collected by professional geologists. 

 Meanwhile we may provisionally assume with Dollfus that this 

 is indeed the case. 



The most important fossil for a determination of age has been 

 called by Dollfus Tympanotomus ( Vicarya) Verneuili d\irch. var. '), 

 for the author remarks: "La découverte du genre Vicarya a Tile 

 Celebes est tout a fait interessante et confirme 1' extension de cet 

 horizon entre Java et les Philippines". Now this fossil is no Vicarya 

 at all, as will appear from what follows. 



Of the genus Vicarya d' Archiac three species iiave originally 

 been published, V. Verneuili d'Arcli.*), V. fusiforuiis Hislop^) and 

 V. callosa Jenkins'''). Later it has appeared, that V.fusiformis had 

 wrongly been called a Vicarya, and Cossmann finally described it 



') Paleontologie du voyage a Tile Celebes de M'. E. C. Abendanon, Leiden 1915. 



') For tlie finds see: E. G. Abendanon, Geologische en geographische door- 

 kruisingen van Midden-Celebes, (Geol. and geogr. expeditions across Central Celebes) 

 Part I, Leiden 1915, pp. 423—425; further Atlas pi. VJL 1916. 



«) p. 30, plate 1, fig. 807. 



4) D' Archiac et Jules Haime, Descript. d. anim. foss. de I'lnde, p. 298, 

 Paris 1853. 



<•) Quarterly Journ. Geol. Soc. Vol. XVI, p. 177, pi. 8, fig. 36a -36c (1859). 



«) I.e. Vol. XX, p. 57. pi. 7, fig. 5 (1863). 



