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DESCRIPTION OF PLATES VIII AND IX, 



Illustrating Mr. Cunningham^ s paper " On the Development of 

 Palinurus vulgaris, the Rock Lobster or Sea Crayfish.'^ 



PLATE VIII. 



Fig. 1. — Newly hatched larva of Palinurus vulgaris; ventral surface, magnified 19 

 diameters. From a specimen hatched in the Aquarium, July, 1889. 



PLATE IX. 



Fig. 2. — Fhyllosoma stage of Palinurus vulgaris, 7 mm. long, taken in large tow-net 

 south of Eddystone, July 16th, 1891. The Roman figures in this and the preceding figure 

 indicate the appendages (excluding the eye-stalks), numbered from the first antenna 

 backwards. 



Fig. 3. — The oral appendages of a larva 4-5 mm. long. u. I. Upper labium. I. I. Left 

 half of lower labium, md. Mandible. 1 mx. First maxilla. 2 mx. Second maxilla. 

 1 mxp. First maxilliped. 



