EXPLANATION OF PLATE IL 



Figure 5. — Hippa talpoida Say, (p. 548;) dorsal view, enlarged about two diameters. 

 6. — Pandalus annulicornis Leach, (p. 550;) dorsal view, slightly reduced in 



size. 

 7. — Gebia affinis Say, (p. 549;) female; lateral view, slightly enlarged. 

 8. — Callianassa Stimpsoni Smith, (p. 549 ;) larger cheliped ; outside, natural 



size. 

 9.— Palsemonetes vulgaris Stimpson, (p. 550;) male; lateral view, enlarged one 



and one-half diameters. 



(All tiie figures were drawn by J. H. Emerton.) 



