188 Proceedhigs of the Royal Society of Victoria. 



Aperture typically bulimine. Sutures faintly marked ; chambers 

 not very numerous. Shell-texture finely arenaceous. Length, 

 0.22 mm., greatest width, 0.13 mm. 



Affinities. — The form of the test and comparative fewness of 

 the chambers remind one of Bulimina pyrula, D'Oi'b.^ Our 

 species, however, is readily distinguished from that form by the 

 strong compression of the test. The two species B. caudi- 

 gera, D'Orb.,'^ and B. ovula, D'Orb.,^ also bear some relation- 

 ship to our form, both in the compression of the test, and in 

 having an aboral spine. The compression in our .species is so 

 marked, amounting to a concavity of the external surface, that 

 it will be as well to regard it as a distinct form. It is worth 

 noting that B. pyrula, D'Orb., occurs in certain Jurassic clays 

 in England, as recorded by Messrs. Jones and Parker ("triassic" 

 clay of Chellaston).^ 



The above species is named after the of Hon. A. C. Gregory, 

 F.R.G.S., under whose auspices the larger fossils were collected, 

 and who gave them to Mr. Daintree. 



Occurrence. — One specimen; Jurassic, Greenough River district, 

 West Australia. [2123.] 



Family Lagenidae. 



Sub-f am ily Nodosariinae. 



Genus Maroi?iiil!na, D'Orbigny. 



Mapginulina compressa, D'Orbigny, (PI. XXII., Fig. 4). 



M. compressa, D'Orb., 1840, Mem. Soc. Geol. France, vol. iv., 

 p. 17, pi. i., figs. 18, 19. 



Reuss, 1845, Verstein. bohm. Kreidef., pt. i., p. 29, pi. xiii., 

 fig. 33. 



Chapman, 1894, Quart. Journ. Geol. Soc, vol. 1., p. 709. 



Remarks. — The genera Marginulina and Vaginulina insensibly 

 graduate into one another, exemplified in certain forms of the 



1 D'Orbigny, 1846, For. Foss. Vienne, p. 184, pi. xi., figs. 9, 10. 



2 D'Orbigny, 1826, Ann. Sci. Nat, vol. vii., p. 270, No. 16 , Module, No. 68. 



3 D'Orbigny, 1839, Foram. Auii^r. Merid., p. ."il, pi. i., figs. 10, 11. 



4 Jones, T. R., and Parker, W. K.: Quart. Journ. Geol. Soc, vol. xvi., 1860, pp. 4.53, 

 454, and 457, pi. xx., fig. 45. 



