92 Explanation of the Plates. 



Fig. 3. Hand of Cattianassa gigas. 

 " 4. " C. Californiensis. 



" 5. " C. longimana. 



u 6. Pandalus Dance. 



" 7. Rostrum of Pandalus Dame. 



PLATE XXII. 



The figures on this plate are all of the natural size. 

 Fig. 1. Orbit, antennae, and rostrum of Loxorhynchus grandis, 9 seen 

 from beneath. 



Fig. 2. Orbit, external antenna?, and rostrum of Loxorhynchus crispatus, 

 <J seen from above. 

 Fig. 3. Side view of orbit, etc., of L. crispalus. 



" 4. Outer maxilliped of L. crispalus. 



" 5. Hand of Crangon Franciscorum. 



" 6. " C. nigricauda. 



" 7. Idotcea resecata. 



" 8. Lygla ddatata. 



" 9. Livoneca vulgaris. 



PLATE XXIII. 



Fig. 1. Spkceroma amplicauda, magnified six diameters. 

 " 2. Portion of the upper surface of a ray of Asterias ochracea, nat- 

 ural size. 

 " 3. Portion of lower surface of a ray of Asterias brevispina, nat. 

 " 4. Portion of upper surface of Asterias gigantea, nat. 

 " 5 and 6. Views of spines of A. gigantea. 

 " 7. Part of upper surface of Mediaster oequalis, natural size, with the 



granules removed from one half to show the plates. 

 " 8. Lower surface of the same. 



" 9. Part of ambulacral furrow and spines of the same, magnified. 

 " 10. A paxillus of upper surface of the same, magnified. 

 "11. One from the lower surface. 



