two neio Oenera allied to Loftusia. 179 



with foraminiferal detritus, the minute dark green particles 

 consisting of glauconite, and the microscopic ones of line 

 white silico-calcareous sand, in which the others are imbedded. 

 From the margin of the cup-lilie excavation there is an 

 indistinct linear radiating arrangement of the larger granu- 

 lated projections, which extends for a short distance outwards, 

 where it becomes lost among the irregular granulations of the 

 surface, Avhich is amorphous, that is, without any pattern. 



Internally the composition is the same, only the detail ren- 

 dered more evident by the polished surfaces of the pieces and 

 the mounted mici'oscopical section, where the " brown- 

 coloured " material is seen to be literally crammed with fora- 

 miniferal detritus, consisting of minute foraminiferal tests of 

 various forms and sizes, chiefly Glohigerina and Orhulina 

 {? Globigerina-ooze) more or less broken down (fig. 8), in some 

 of whose chambers ma} be seen glauconite (fig. 8, dd) and in 

 others the opaque scarlet spherules above mentioned (fig. 8), 

 the instances of the latter being so numerous and the dis- 

 persed spherules (fig. 8, g) so abundant in some places as to 

 impart a red tint to the surrounding material ; also various 

 forms of sponge-spicules (fig. 8, c) and a large quantity of 

 (comparatively large) glauconite grains (fig. 8, e), which, 

 from what has been just stated, appear to originate in the 

 chambers of the foraminiferal tests, although from subsequent 

 segregation they often present no particular form. I also 

 notice in many places little masses of material like the frothy 

 yellow substance described in Stoliczkiella Theobaldi^ only of 

 a white colour, looking like the broken-down remains of 

 germinal tests about to be assimilated or discharged. 



As regards structure, all that can be learnt from the sec- 

 tions is that, on the surface of the transverse one close to 

 the " cup-like excavation," the material is so condensed in 

 the centre as to occupy a circular space about 3-12ths in. in 

 diameter, which is continued upwards through the axis of the 

 fossil, extending outwards in a less condensed state, and then 

 followed by a great number of little pits or vacuities (interstices 

 of a reticulated structure, tigs. 7 6 and 8 a), which, although very 

 irregular both in size and position, shadow forth a tendency 

 to circumscribe circular divisions of more condensed mate- 

 rial, each about l-16th in. in diameter (the pits and the con- 

 densed material corresponding with the large granulated 

 projections on the surface of the fossil and their intervals). 

 A little higher up (that is, in the centre of the fossil) the 

 mounted microscopic section presents the same characters 

 without any appearance of "axial condensation;" that is, the 

 " circular divisions " are continued to the centre, about which 



