NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 69 



b. With composite spinigers but without acicular hooks in anterior 

 parapodia, including: 



O. litoralis Moore, p. 72. 



O. peruana, new species, p. 73. 



c. With composite spinigers and simple acicular hooks in some para- 

 podia, including: 



O. nebulosa Moore, p. 75. 



d. With simple acicular hooks in some anterior parapodia but with- 

 out composite spinigers, including: 



O. micro cephala, new species, p. 78. 

 O. vexillaria Moore, p. 80. 



Key to Species of Onuphis 



1. Heavy acicular hooks (pi. 3, fig. 70) present in some anterior 



segments; anterior hooded hooks tridentate 2 



1. Without such heavy acicular hooks; anterior hooded hooks dis- 

 tally bidentate or tridentate 4 



2. Composite spinigers (pi. 3, fig. 63) in some anterior segments 

 O. nebulosa, p. 75 



2. Composite spinigers absent 3 



3. Anterior dorsal and ventral cirri and postsetal lobe prolonged 

 (pi. 5, fig. 98) O. vexillaria, ^.^0 



3. Anterior dorsal and ventral cirri and postsetal lobe much short- 

 er (pi. 3, fig. 67) O. microcephala, p. 78 



4. Anterior hooded hooks distally bidentate 5 



4. Anterior hooded hooks distally tridentate ....... 6 



5. Larger; ventral cirri cirriform through 5 setigers 



O. magna, p. 70 



5. Smaller; ventral cirri cirriform through 3 setigers 



O. parva, p. 70 



6. Branchiae present from first setiger . . . O. eremita, p. 75 



6. Branchiae first present after first setiger 7 



7. Anterior parapodia very greatly prolonged (pi. 3, fig. 57) ; 

 ventral cirri cirriform through 7 setigers; without composite 

 spinigers O. zebra, p. 71 



7. Anterior parapodia much shorter; composite spinigers present 8 



8. Branchiae present from sixth setiger, with as many as 8 fila- 

 ments where best developed O. peruana, p. 73 



8. Branchiae first present from fourteenth setiger or later, with at 

 most 3 filaments O. litoralis, p. 72 



