ON THE OVTPAEOUS SPECIES OP ONYCHOPHOEA. 385 



remainder of the body was nearly white, but very distinct 

 isolated pigment patches (chiefly indigo-blue, with a few 

 specks of orangej appeared scattered pretty abundantly over 

 the legs and back. The mouth was surrounded by the very 

 characteristic, thick, transversely furrowed lip. The dermal 

 papillee were very obvious, and exhibited the characteristic 

 spines, the cuticle being very strongly developed. The claws 

 on the feet were very distinct. The alimentary canal was 

 full of granular food-yolk. 



The embryo just described was between eight and a half 

 and eleven months old from the time of egg-laying, and was 

 apparently just about ready to hatch. It is therefore very 

 remai-kable that another embryo of the same batch remained 

 in the egg for another eight and a half months (or there- 

 abouts) before hatching. 



About the end of 1892 only a single egg remained in the 

 hatching box, all the others having either gone bad or been 

 used for investigation. On January 3rd, 1893, not having 

 opened the box for some days, I found this egg, so far as I 

 could tell, in its former position, lying on a small piece of 

 rotten wood, which rested on the glass bottom of the hatching 

 box. The shell, however, was split on one side, and the young 

 animal had made its escape. It was found lying dead on the 

 glass, 25 mm. from the egg-shell. The animal was itself 

 only about 5 mm. in length, so that, even assuming that it 

 had moved in a perfectly straight line, it must have crawled 

 for a distance of five times its own length, off the rotten 

 wood and along the glass to the position in which it was 

 found. 



To the naked eye the young animal appeared of a pale 

 greenish colour. It cannot have been dead for very many 

 days, but decomposition had already set in, and the body 

 adhered to the glass upon which it lay, so that it could not 

 be removed without considerable injury. I mounted it in 

 Canada balsam, however, and even in its present condition it 

 shows under the microscope such characteristic features as 

 claws and jaw-blades and indigo-coloured pigment. The 



