EXPLANATION OF PLATE VI. 
Figure 25.—Limnoria lignorum White, (p. 571;) dorsal view, enlarged ten diameters. 
26.—Erichsonia filiformis Harger, (p. 570 ;) dorsai view, enlarged five diam- 
eters. 
27.—Erichsonia attenuata Harger, (p. 570;) dorsal view, enlarged three diam- | 
eters. ‘ 
28.—Epelys trilobus Smith, (p. 571 ;)ydorsal view, enlarged ten diameters. 
29,.—Livoneca ovalis Harger, (p. 572 ;) dorsal view, enlarged three diameters. 
(Figuro 25 was drawn by S. I. Smith ; 26 and 28 by O. Harger; 27 and 29 by J. H. En erton.) 
