PLATE IV. 



Squilla (A lima). 



Fig. 1. Gonodactylus {Erichthoidina). Telsou of the specimen shown in PL XII. fig. 3 

 (pp. 55, 113). 



Fig. 2. Mandible of tlie siime Larva. 



Fig. 3. MaxiUa of the same larva. 



Fig. 4. Squilla {Alima) gracilis, from St. Vincent. Stage No. 2, 6 '91 mm. long (p. 84). 



Fig. 5. Squilla {Alima) gracilis, from St. Vincent. Stage No. 4, 11 '54 mm. long. 



Fig. 6. Squilla (Alima) gracilis, from St. Vincent. Stage No. 5, 17"38 mm. long. 



