PLATE VI. 



Lysioeeichthus. 



Fig. 1. Lysiosquilla (?) {Erichthoidina). Telson of the larva shown in PI. XII. fig. 1. 



Fig. 2. Seventh thoracic limb of the larva shown in PI. XII. fig. 6. 



Fig. 3. Squilla{Alima) gracilis, from St. Vincent. Stage No. 6 ; 42"83 mm. long. 



Fig. 4. Squilla {Alima) gracilis. Stage No. 6. Mouth parts more highly magnified. 



Fig. 5. Squilla (Alima) gracilis. Stage No. 6. Anterior end of body more magnified. 



Fig. 6. First abdominal appendage of the larva shown in PI. XII. fig. 6. 



Fig. 7. Telson of a P sender ichthus larva from Volcano, similar to the one shown in 

 PI. XII. fig. 6, but If inches long. 



