500 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



PLATK XIX. 



Metamorphosis of Alpheus liiicruclivlis at Beaufort, North Carolina, drawn from nature by W. K. 



Brooks. 



FIG. 1. Ventral view of the larva immediately after hatching. 



FIG. 2. Side, view of the same larva. 



FIG. 3. Dorsal view of the antennule of the same larva. 



FIG. 4. Ventral view of the antenna of the same larva. 



FIG. 5. Mandible of the same larva. 



FIG. 6: First maxilla of the same larva. 



FIG. 7. Second maxilla of the same larva. 



