EXPLANATION OF PLATE VI. 



PiGUEE 25. — Limnoria lignorum White, (p. 571;) dorsal view, enlarged ten diameters. 

 26. — Erichso'nia filiformis Harger, (]). 570 ;) dorsal view, enlarged five diam- 

 eters. 

 27.— Erichsonia attenuata Harger, (p. '570 ;) dorsal view, enlarged three diam- 

 eters. 

 28. — Epelys trilohus Smith, (p. 571 ;) dorsal view, enlarged ten diameters. 

 29.— Livoneca ovalis Harger, (p. 572 ;) dorsal view, enlarged three diameters. 

 (Figure 25 was drawn by S. I. Smitli ; 26 and 28 by 0. Harger ; 27 anA 29 ly J, H. Enertoa.) 



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