NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 85 



2. Branchiae present from first setiger . . . N. elegans, p. 88 



2. Branchiae present from about the twenty-third setiger; com- 

 posite spinigers absent N. gorgonensis Monro 



3. Branchiae present from first parapodium; tentacular cerato- 

 phores very long A^. iridescens, p. 87 



3. Branchiae first present after first parapodium; ceratophores 

 long or shorter 4 



4. Branchiae present from third or fourth parapodium, continued 

 nearly to posterior end ; main distal tooth of anterior composite 

 hooks short, not rounded, not projecting beyond lower teeth 

 N. pallida Moore 



4. Branchiae present from fifth parapodium, usually absent from 

 about the last 44 segments; distal tooth of anterior composite 

 hooks larger, slenderer, distally rounded, projecting beyond 

 other teeth N. geopkiliformis Moore 



4. Branchiae first present from about eighteenth parapodium or 

 later, or entirely lacking; composite spinigers present in some 

 anterior segments 5 



5. Acicula with club-shaped tips (pi. 15, fig. 321) 



N. stigmatis intermedia, p. 93 



5. Acicula taper distally 6 



6. Branchiae present on some segments 7 



6. Branchiae absent . . . . N. stigmatis paradiopatra, p. 91 



7. Dorsal cirri and postsetal lobe in anterior segments not greatly 

 prolonged A^. stigmatis, s. str., p. 89 



7. Dorsal cirri and postsetal lobe in anterior segments much long- 

 er A^. stigmatis cirrata, p. 92 



8. Branchiae first present from about the sixth parapodium, cease 

 at about the fifty-third segment; first parapodia not prolonged 

 A^. lepta Chamberlin 



8. Branchiae first present from about the tenth to twentieth seti- 

 ger; first parapodia enlarged and project forward .... 

 A^. conchylega, p. 85 



Nothria conchylega (Sars) 

 Plate 5, Figs. 105-112; Plate 17, Figs. 337, 338 



Onuphis conchylega Fauvel, 1923, pp. 415-417, fig. 164. 



Collections.— 22A-3A (1) ; 1253-41 (1) ; 1275-41 (1) ; 1288-41 (1) ; 

 1316-41 (1); A 12a-39 (1); A 42-39 (1). 



The dorsum is marked with a broad, transverse, brown stripe across 

 the front end of each segment, in the anterior region of the body. The 



