293 H. N. MOSELEY. 



between the Geoplanas and the DoHchoplanas of Manilla. The 

 occurrence of Bipalium in New Zealand seems a very remarkable 

 fact, and it is hoped that the species will be carefully described. 



The curious rod-cells of land planarians are remarkable struc- 

 tures. Several long hyahne rods occur coiled up together in each 

 cell, and these rods are shot forth on irritation of the animal. 

 The rods are, however, unconnected with the cell-wall, and their 

 structure does not afford further evidence of relationship between 

 rod- cells and nematocysts. It would be interesting to test the 

 surface of a living land planarian with the tongue and ascertain 

 whether any sensation of urtication is produced. The rod-cells 

 of Rhpichodemus bilineatus are very similar to those of other 

 land planarians, but the long rods seem to differ in that case 

 in being tapered at either end. 



The discovery of the mode of re])roduction of land planarians 

 is of much interest. The chitinous capsule containing several 

 ova, and eventually embryos, which are entirely free in its cavity, 

 is closely similar to that of, e. g., Dendrocatum lacteum, but 

 necessarily much larger. No metamorphosis appears to occur 

 in the progress of development. 



