OF A LAND-CRAB, CARDISOMA ARMATUM. 



13 



Among twenty or thirty larvae preserved for examination it 

 was noticed that two specimens di tiered from the rest in the form 

 of the 1st and 2nd maxillipeds. In these two specimens the 

 exopodites, instead of ending in four short spines as in all other 

 specimens, ended in a brush of four plumed hairs, each about the 

 jength of the remainder of the endopodite. In both C. gaanliumi 



Text-figure 3. 



Ist antenna. 

 Text-figure -4. 



2nd antenna. 



Text-figure 6. 



Text-figure 5. 



1st and 2ud maxillipeds, 

 seen from inside. 



Telson. 



and in Gelasimus the exopodites of the maxillipeds normally end 

 in a similar strvicture. It cannot be said with any degree of 

 certainty what this rejwesents. It may be that in these two 

 specimens the 1st zopea has already developed characters that 

 would normally jippear on a later instar, but, as no specimen was 



