Invertebrate Gallery of the Indian Museum. g 



simply Foraminiferal ooze that has been laid down in the 

 seas of past geological ages, and has since been upheaved 

 into dry land. 



Among the exhibits are to be seen : — 



I. — Pelagic and Deep-sea Forominifera : — 



(i) A piece of rough dried Glohigerina ooze from the 

 Bay of Bengal, 



(2) Glohioerina ooze from the Laccadive Sea washed 



free from impurities, and dried : this specimen 

 shows the constituent shells as a coarse 

 powder. 



(3) Specimens of Glohigerina bulloides, one of the 



commoner "perforate " forms, mounted sepa- 

 rately. 



(4) Specimens of Pulvinulina menardii, another very 



common " perforate " form, mounted separate- 



All these come from depths of one thousand to two 

 thousand fathoms. 



The imperforate forms are well illustrated by a large 

 specinien of (5) Horniosina bradyi dredged in the Bay 

 of Bengal at a depth of 561 fathoms. The shell of 

 Horniosina consists not of lime, but of chitin strengthened 

 on the outside by a smooth compact coat of minute grains 

 of sand, and at one end of the shell is the opening — shown 

 in the enlarged drawing that accompanies the specimen — 

 from which the pseudopodia are emitted in a bunch. 

 II. — Littoral and shallow-water Foraminifera : — 

 (i) Orbitolites. 



(2) Nummulina. 



(3) Alveoli na. 



(4) Planorbiilina. 



III. — The other exhibits in the Protosoa-cdLse are a 

 series of models of recent and extinct Forami- 

 nifera much enlarged ; and 



IV. — Enlarged drawings of the other types of 

 Protozoa—vis.^ Monera, Amwba, Thalassicolla 



