ISOPODS OF NORTH AMERICA. 



349 



following-, bei no- a8 wide as tho basal articlo; Iho lil'th article is one 

 and a half times longer than any of the three ])reeedino- ones. The 



Fk;. 374.— Mesidotea ENTOMON (After Gekst.kcker). «, Dorsal view. xU. 6, Mandible, c, 

 Mandible, d, Ventral view, x U. e, Labium. /, Maxillipeds. g, Half of two thoracic 



SEGMENTS ABOVT THE MIDDLE, WITH ONE LEG. /), ABDOMEN (VENTRAL SIDE). i, CROSS SECTION 

 OF A THORACIC SEGMENT ABOUT THE MIDDLE. ./, SECOND MAXILLA. 7;, FIRST MAXILLA. I, SEC- 

 <IN1) ANTENNA, m, FiBST ANTENNA. 



flaoellnni is composed of tivo articles, the tirst one being nearly three 

 times as long as any of those following. The maxillipeds have a palp 

 of live articles. 



