68 



U.S. NATIONAL MUSEUM BULLETIN 236 



Figure 19. — Ectinosoma dentatum Steuer, loc. 592, ad. 9 : a, whole animal, dorsal view: 



b, genital somite, ventral view. Halophytophilus fusiformis Brian, loc. 431, ad. 9; 



c, whole animal, dorsal view; d, same animal, lateral view from right side; e, abdomen, 

 ventral view. (X 310.) 



appendicular seta; setae 1, 4, and 5 are small, 4tli being longest of set. 

 Setae 2 and 3 lengthened, especially 3rd, which reaches % body length ; 

 2nd shorter. 



