EXPLANATION OF PLATE II. 



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

 6. Pandalus armulicornis 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. Palaemonetes vulgaris Stimpson, (p. 550;) male; lateral view, enlarged one 



and one-half diameters. 



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



