EXPLANATION OF TEE PLATES. 



PLATE L 



FlGUEE 1. Philoscia vittata Say (p. 306); dorsal view, enlarged, six diameters; 



natural size indicated by cross at the right 

 2. Scyphacella aienieola Smith (p. 307) : dorsal view, enlarged about twe > e 



diameters : natural size indicated by cross at the right. 



3, Actoniscus ellipticus Harger (p. 309) ; dorsal view, enlarged ten diame- 

 ters; natural size indicated by line at the right. 

 4. Jsera albifrons Leach (p. 315) ; female : dorsal view, enlarged about ten 



diameters, 

 5. The same ; maoffiped from the left side, exterior view, enlarged twe^rv- 



five diameters : P, palpus : J, external lamella. 

 6. The same ; ma-ring*, enlarged twenty-five diameters ; a, outer, or second, 



pair of TnaTTTlg>; 6, inner, or first, pair of maxillae; t, inner, , outer 



lobe, 



7. The same ; inferior surface of the pleon of a female, 

 8. The same ; inferior surface of the pleon of a male, 

 (ATI the figures were drawn from nature by O. Harger. ) 



PLATE II. 



FlGt"RE 9. Janira alta Harger (p. 321) ; dorsal view, enlarged five diame: : - : 



natural size indicated by line at the right. 

 10. Janira spinosa Harger (p. 323): dorsal view of female, enlarged sir 



diameters. 



11. Mnnnopsis typica M. Sars (p. 330) : dorsal view of male, enlarged about 

 two diameters; 6, maxillipeds; m. basal segment; 7, external lame 

 2 and 3, second and third segments of palpus of maxLUipeds : c. o~ 

 maxillse : d, inner Tna-riTlap e, one of the second pair of legs of the m 

 /, one of the natatory legs: g. abdominal operculum of the fe^ 

 external view. 



(Figures 9 and 10 were drawn from nature by O. Harger : figure 11 is copied from 

 iL Sars, drawn by G. O. Sars.) 



PLATE III. 



FIGUEE 12. Janira alta (p. 321): a. maxiEiped; P, palpus of maxflliped : I, external 

 lamella; 6. mandible: P. palpus of mandible: d, dentigerous lame. 

 , molar process, enlarged twenty-five diameters. 



13. The same : inferior surface of the pleon, a in the female, & in the r- 

 enlarged ten diameters; a. single opercular plate in the fern; 

 6. external ; c. median plate of opeTculTnn of male. 



14. Munna Fabricii Kxoyer (p. 323); female; dorsal view, enlarged about 

 twenty diameters : natural size indicated by line at the right. 



15. Eurycope robust a Harger (p. 332) ; female ; dorsal view, enlarged six 

 diameters : natural size indicated by line at the right ; a. antenaula, 

 enlarged twenty diameters : 6. maxiHiped : e, mandible ; d, one of the 

 first pair of legs, each enlarged twenty diameters : <f. propodus and 

 dactylus of the first pair of legs, enlarged about thirty-eight diameter - ; 

 e, propodus and dactylus of the second pair of legs, enlarged - 



' 453 



