CRABS AND SHRIMPS 217 



(taking in the eyes) almost straight, the lateral angles 

 much advanced. 



This Crab, however, was still very minute; and many 

 sloughings were before it. In the course of these it was 

 destined gradually to attain not only the dimensions of its 

 parents, but also their form. This, however, would be 

 matter of development, rather than metamorphosis: the 

 lateral outlines of the shield would more and more ap- 

 proach each other behind, while the series of points that 

 now belonged to these lateral outlines would become thrown 



THIRD STAGE OF SHORE-CRAB. 



into the front margin, which would by degrees assume an 

 arched form, as you may see in this figure of the adult 

 Crab. 



Though I cannot at this moment show you specimens 

 of the Garcinus in its earlier stages, yet I have here a 

 good number of the Zoeas of one of those intermediate 

 forms which are the connecting links between the Crabs 

 and Lobsters I mean Q-alathea. The adult animal is of 

 a broad squat form, something like what you might sup- 

 pose a Lobster to be, if it had been flattened between two 

 stones, without being actually destroyed. We have two or 

 three species, one of which is adorned with brilliant scarlet 

 and azure paintings; but I cannot tell to which of them 



all this infant form belongs. 

 15 SCIENCE 30 



