U. S. NATIONAL MUSEUM 



PROCEEDINGS, VOL. 83 PL. 53 



Fig. 1.— Pal/emon ritteri. Fig. 2.— Peneus stylirostris. 



Fig. 3.— Lysiosquilla decemspinosa. Fig. 4.— Synalpheus townsendi peruvianus. 



Fig. 5.-Munida cokeri. 



For explanation of plate see page 620. 



