PLATE 73. 



Maldanella fibrillata Chamberlin. 



Figures 1, 2. 



1. — Distal end of capillary seta of third setigerous somite (fibrillae not shown). X 337. 

 2. — Portion of middle region of same. X 337. 



Petaloproctus crenatus Chamberlin. 



Figures 3-7. 



3. — Caudal end, lateral view. X 337. 



4. — The same, dorsal view. X 337. 



5. — Distal portion of major capillary seta of eighth somite. X 337. 



6. — Uncinus of eighth somite. X 337. 



7.— Distal end of same. X cir. 1150. 



