but the specimens, which were few in number, have been unfor- 

 tunately mislaid. 



Genus — Miliolixa, Williamson. 



7. 3/. semimilum, Linn. Of the short and thick variety, 

 mostly fine examples, measuring up to one-tenth of an inch. Lower 

 Bed, moderately common. Upper Bed, very common. 



8. ^M. Cftviericma, d'Orb. Lower Bed, rather scarce. 



9. 21. trigonula, Lamk. In Lower and Upper Beds, ratlier 

 scarce. 



10. JI. tricarinata, (TOrh. Lower Bed, rather scarce. Upper 

 Bed, rare. 



11. *J/. valvularis, Rss. A single example of robust build has, 

 with some hesitation, been referred to this species. Lower Bed. 



12. *M. prisca, Terq. One of the -pitted 2Iiliolicp. In weathered 

 specimens the pitted depressions become coarse perforations of 

 the test. Lower Bed, moderately common. 



13. 21. oblonga, Montag. Not very characteristic, the specimens 

 being mainly passage forms approaching the elongated varieties 

 of 21. semimilum. Lower Bed, moderately common. Upper 

 Bed, common. 



14. "^J/. pygmci^a, Rss. Lower Bed, moderately common. 



15. 21. Linneana, d'Orb. Several examples of this fine species 

 were observed in both formations, but it is not very common. 



16. *2f. Bro7igniartii, d'Orb. Lower Bed, rare. 



17. *J/. Feriissacii, d'Orb. Lower Bed, moderately common. 



18. ^21. undosa, Kar. Many of the specimens show intermediate 

 characters approaching 21. Feriissacii. Lower Bed, common. Tlie 

 most characteristic examples of this species in the Challenger col- 

 lection were from Bass Straits. 



19. *2I. scrobiculata, Brady. One or two specimens were ob- 

 tained in Lower Bed which agree very closely with Mr. Brady's 

 descriptions and figures. This form must be distinguished from 

 Articulina sulcata, w^hich it somewhat resembles. 



20. 21. aggluti7ians, d'Orb. Specimens vary from a broad oval 

 outline to a much elongated test with produced neck. Lower 

 Bed, very common. In Upper Bed the examples are fewer in 

 number, and for the most part very coarse in test structure. 



21. '"J/, angularis, sp. nov. PI. i., figs. 1 — 3. 



Test free, elongate, fusiform ; composed of numerous (about 

 18 or 20) chambers, arranged lengthways, and more or less spirally 

 around the longer axis. Segments narrow and much compressed, 

 investing, only the final whorl being visible externally. Early 

 chambers oval in transverse section ; the later chambers increase 

 in size mainly in a lateral direction. The final Avhorl consists of 

 from five to six chambers arranged at obtuse angles to each other, 



