EXPLANATION OF PLATE II. 



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. — Gehia 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 the figures were drawn by J. H. Emerton.) 



