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droma ; nervo primario basi prominentc, apicem versus attenuato, recto ; nervis 
secunclariis subangulis 50-60° orientibus, distinctis arcuatis, marginem 
adscendeutibus, basem versus abbreviatis ; nervis tertiariis angulo subrecto 
egredientibus simplicibus vel ramosis fiexuosis inter se conjunctis. 
Obs. — This well-preserved leaf lias, on account of the somewhat 
asymmetrical development, the habit of a leaflet, and, as regards its form and 
venation, agrees best with the leaflets of Bombax. These are very deciduous, 
mostly very shortly petiolate, obovate-lanceolate, entire margined, and have 
besides in several species a delicate almost membranous texture, as well as a 
camptodromic venation, for example, the Bombcix y rancl ijlor urn, Cav. and 
A. (compare Ettingsliausen, Nervation der Bomba ceen, Dcnksch. K. 
Akad. Wissenscli. Wien, vol. xiv, PI. II, figs. 2 and 4). With a species of 
Bombcix from Guatemala (compare Ettingsliausen loc. cit., PL II, fig. 3), 
our species shares the acute-angled camptodromic secondary veius, gradually 
shortened towards the base, and the very short petiole ; with B. jloribiinclum 
(Ettingsliausen, loc. cit., PL Y, fig. 1 ; PL YI, fig. 7) the obovate-lanceolate 
form, the strongly contracted base, and the obtuse-angled or right-angled 
tertiary veins, and finally with several other species the shortly acuminate 
apex of the leaflets (compare loc. cit., Pl. IY, figs. 3-5; PL Y, figs. 4-6). 
I therefore believe I cannot lie wrong in regarding the described leaf 
as the remains of a species of Bombcix, and I name it after Captain Sturt, 
an Englishman, who made important exploratory journeys in the interior 
of Australia. 
Locality and Horizon. — With the preceding species. 
Bombax Mitciielli, sp. nov. 
Plate YI, Fig. 2. 
Sp. Char . — B. foliolis coriaceis obovatis integerrimis basi attenuatis ; 
nervatione camptodroma ; nervo primario valido prominentc, recto ; nervis 
secundariis subangulis 50-60° orientibus, prominentibus, inmqualibus remotis, 
valde arcuatis marginem adscendeutibus, basem versus abbreviatis ; nervis 
tertiariis latere externo subangulis acutis egredientibus, fiexuosis inter se 
conjunctis subtransversis. 
Obs . — This is also a leaflet of Bombax, approaching the last described 
in many respects, but differing in a more rigid texture, the more obovate 
