85 



at tome in eitlier hot or cold areas. It has been noted from 

 the shallows down to 4,000 fathoms. As a fossil it occurs in 

 -the Oolite of France, Jurassic of Switzerland, and Post- 

 Tertiary of Norway. 



Reopliax fiLsiformis, "Williamson. — This is a one-chambered 

 variety of R. scoiyiurus, and represents uncongenial and 

 shallow-water conditions. It is the commonest species of the 

 foraminiferal fauna in the Hergott section. This is an inte- 

 resting fact when considered in relation to its known range 

 and distribution. It is not a common form in the present day. 

 It has been taken in the North Atlantic and sparingly off the 

 British coasts. To these localities the Challenger only adds a 

 single one, off the Phillippiue Islands, at 95 fathoms, whilst 

 the species has not been previously known to occur in a fossil 

 condition. It was not found in the Hergott material at a greater 

 depth than 200 feet. 



Reopliax ampullacea, Brady. — This is a flattened variety of 

 R. difflugiformis, Brady. Circular at the base, and tapering at 

 the distal end ; much compressed. One or two examples 

 which appear to belong to this variety were found in the 

 Hergott material, but it is much rarer than its allied species. 

 The species was founded on Challenger specimens, and these 

 -taken at only one station, off Kerguelen Island, in 120 

 fathoms. 



Haplophragmium agglutinans, d'Orb. — This is a coarsely 

 .arenaceous crosier-shaped form that can be easily distinguished. 

 It occurs in moderate numbers in the upper portions of the 

 Hergott section. It varies considerably in size, and is built 

 up of very coarse grains of sand. The linear portion is often 

 absent in these specimens from Hergott, probably through 

 being broken off either beforehand or by the attrition caused 

 by the washing. The septal lines are also obscure in these 

 specimens, arising from the ver}^ coarse texture of the test ; 

 and the rectilineal portion, instead of gradually enlarging 

 towards its extremity, as is generally the case, sometimes 

 tapers to a point. H. agglutinans is to be found in all seas at 

 the present day, and although it is sometimes taken in shallow 

 waters, Mr. Brady says it is essentially a deep-sea species, 

 from 500 to over 3,000 fathoms. I have taken it, however, 

 in about two feet of water in the Port Creek. It is known as 

 a Liassic, Lower Tertiary, and 3Iiocene fossil. 



Haplopliragmium agglutinans^ var. rectum^ Brady. — This 

 variety was named by Mr. H. B. Brady some years ago from a 

 few specimens found in the Lower Carboniferous rocks of 

 Yorkshire. It is a delicate variety, with a very small spiral- 

 line development in comparison with the length of the linear 

 •portion. This variety passes into the typical species by every 



