52 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



The outer lobes of the keels, to just in front of the middle of the 

 body, each have a single seta in the margin ; the outer lobes of the 

 keels of the remaining segments each have two setae in the margin. 

 Posterior margin of the keels with the incisions deeper than those 

 of the front margin and with the outer incision more remote from the 

 base of the keel than that of the front margin. On the posterior 

 margin the lobe adjacent to the one at the outer corner contains a 

 conic, bristle-tipped tubercle. Close to the base of each carina on seg- 

 ment 2 is a bristle-tipped tubercle ; similar tubercles are found on the 



Fig. 25. — lomoides hispidus. a, head and first 2 segments, ventral view; b, eighth 

 segment, posterior view; c, gonopod, meso-posterior view. 



carinae of segments 3 and 4, but increasingly farther removed from 

 the base of the carinae, and on segments 6, 8, 11, and 14 the tubercles 

 are near the middle of the carinae, poriferous segments without such 

 tubercles. Posterior view of segment 8 shown in figure 25, h. 



Penultimate segment with the tubercles reduced in size, especially 

 those of the outer rows, the last tubercle in each inner row projecting 

 a little way behind the back margin. 



Last segment with the two apical marginal tubercles very close 

 together. 



Gonopods as shown in figure 25, c. 



Type.— U.S. '^M. no. 1104. 



