AJAIAD^E. 



on themselves, (fig. 2,) the caudal extremity being bent on 

 the body ; but this is soon changed for the position re- 

 presented in fig. 3. I could detect no spine on the anterior 

 part of the carapace, which was quite smooth, but marked 

 with dots. The eyes are sessile and large ; the claws, 

 particularly towards the extremity, covered with minute 

 hairs." 



These interesting observations of Mr. Richard Couch af- 

 ford a fresh confirmation of the truth of the metamorphosis 

 of the brachyurous Crustacea, and it is to be hoped that 

 whenever an opportunity occurs to any observer to pre- 

 serve and examine the embryo, and the subsequent pro- 

 gress towards the perfect state of any other species, similar 

 notes may be made, and thus we shall hereafter arrive at 

 a knowledge of this curious process in most of our native 

 species. 



An ordinary sized Corwich, as Mr. Couch informs me, 

 bears at one time upwards of seventy-six thousand eggs. 



RC. 



