BY J. P. HILL. 61 



the ordinaiy calcareous corpuscles. In some cases the spaces 

 contaiu one or more large granules with a number of small ones, 

 in others the small granules are alone present. Their very- 

 definite form goes against the belief that they are due to the 

 action of the fixing fluid (corrosive sublimate) or the staining 

 fluid (cochineal). It may be that they represent cells which 

 produce instead of one large corpuscle, a number which lie free in 

 their cavities. 



2. On a proliferating Species op Piestocystis from Li a lis. 



A living specimen of the' widely distributed but somewhat i-are 

 lizard Lialis Burtonii, Gray, for which I am indebted to Mr. 

 Masters of the Macleay Museum, was found on dissection to be 

 infected with cysts of a somewhat remarkable character. Each 

 cyst contained from one to three Cysticerci, which lay quite free 

 in the cavity of the cyst. In the fresh condition the cysts 

 appeared as vesicular elevations of the wall of the small intestine, 

 along the whole length of which they were found, usually placed 

 singly, but in some cases two occurred in close apposition, with a 

 common wall between them. The lai'gest cyst observed measured 

 1-75 mm. in diameter. Through the kindness of Mr. E. Etheridge, 

 Junr., Acting Curator of the Australian Museum, and of Mr. 

 Masters, I had the opportunity of examining six spirit specimens 

 of Lialis, and in two of these the cysts were again encountered, 

 (iccupying the same position as described for the living form. 

 When the living cysts are removed from the wall of the intestine 

 and the cyst wall ruptured with needles, the cyst collapses owing 

 to the escape of the Cysticerci and the fluid which surrounds 

 tliem. In the fresh specimen examined, two Cysticercoids were 

 found in the greater number of the cysts, one usually lai'ger than 

 the other ; in a few one Cysticercus only was found, but seeing 

 that in cysts containing two Cysticerci one was larger than the 

 other, and also judging from certain appearances seen in entire 

 cysts mounted in glycerine and in a series of sections, I am 

 inclined to believe that the cysts with only one Cysticercus had 



