2 L. A. Borradaile — C oral- Gall Prawn Paratypton 



successive broods of eggs, setting free typical crab larvae of 

 the first zoaea stage, which must pass to the exterior through 

 the outlets of the gall. 



Hitherto it has been supposed that all the coral galls were 

 formed by Hapalocarcinus. Now, however, Potts has made 

 an interesting discovery which shows that for some a prawn is 



Fig. i. 



Fig. i. Paratypton siebenrocki, Balss, 1914. 

 Fig. ia, Antennal scale, more highly magnified. 



responsible. The prawn was already known, having been 

 described by Balss in 1914, 2 under the name of Paratypton 

 siebenrocki, but Balss was not aware of its gall-raising habits. 

 Mr. Potts has kindly placed in my hands his single specimen, 

 which is a female. A male was with her, but was unfortunately 



2. Zool. Ariz., 45, 83. 



