280 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



Abdominal neuropodia with single heavy aciculum projecting from 

 distal end of parapodium; branchiae first present from about 

 segment 5 or 6 Scoloplos (Leodamas) 



Scoloplos, sensu stricto 

 Type S. armiger (O. F. Muller) 1776 



The prostomium is triangular and more or less acutely pointed in 

 front. Branchiae are first present from about segment 10 to 26 and con- 

 tinue back to the end of the body ; they are simple Ungulate or straplike. 

 The thorax consists of many segments. Notopodia have long pointed 

 setae ; some notopodia, especially in the middle region of the body, may 

 have furcate setae. Thoracic neuropodia have palisaded rows of curved 

 uncini (pi. 29, fig. 6) and sometimes accompanied by pointed setae (pi. 

 29, fig. 3). There are no interramal cirri and no ventral or parapodial 

 fringes. 



Key to species of Scoloplos, sensu stricto 



1. A pocket-shaped membrane located behind the ventral cirrus 

 present from about segment 18 and continued more posteriorly 

 S. marsupialis 



1. Without such pocket-shaped membrane 2 



2. Thoracic neuropodia have vertical rows of heavy brown spines 

 S. treadwelli 



2. Neuropodia without such heavy brown spines .... 3 



3. Thoracic neuropodial ridge with two papillae and a subpodial 

 lobe present on some thoracic segments (pi. 29, fig. 2) ... 

 S. armiger 



3. Thoracic neuropodial ridge with a single short lobe; parapodia 

 without subpodial lobe S. acmeceps 



Scoloplos armiger (Muller) 1776 

 Plate 29, figs. 1-7 



Lumbricus armiger Muller, 1776, p. 215. 



Scoloplos armiger Eisig, 1914, pp. 367-403; Fauvel, 1927a, pp. 20-21, 



fig. 6 k-q; Okuda, 1937, pp. 102-3, fig. 4 a-d; Monro, 1930, p. 



145; Berkeley and Berkeley, 1952, p. 97, figs. 197-199. 

 Scoloplos sp. Hartman, 1955, p. 183. 



