NO. 3 HARTMAN : ORBINIIDAE, APISTOBRANCHIDAE, PARAONIDAE 287 



In the abdomen only a short middorsal space separates the branchial 

 bases. Branchiae are large, compressed and terminate in a slenderer tip ; 

 they exceed the notopodial lobe in size. Typical abdominal notopodia 

 have a large triangular postsetal lobe and two or three embedded yellow 

 acicula, together with about 20 long, pointed setae and two or three 

 furcate setae (fig. 1). The corresponding neuropodia have a smaller 

 triangular postsetal lobe and a thick yellow aciculum that is curved near 

 the tip and projects from the lobe; in addition there are 12 to 15 long 

 pointed setae. A simple ventral cirrus is present, at least in anterior 

 abdominal segments, located at the sides of the body and immediately 

 below the neuropodial base. 



Furcate setae (fig. 4) have tines of unequal length and a smooth 

 shaft. Abdominal acicula (fig. 2) are thick, distally curved and smooth; 

 they differ from thoracic uncini in having a longer, tapering distal end. 



Distribution. — Scoloplos {Leodamas) verax is known only from 

 southeastern South America in 32 fathoms. 



Scoloplos (Leodamas) ohlini (Ehlers) 1901 

 Plate 31, figs. 6-8 



Aricia ohlini Ehlers, 1901, pp. 167-169, pi. 21, figs. 9-13. 

 Aricia cochleata Ehlers, 1901, pp. 166-167, pi. 21, figs. 14-21. 

 Scoloplos ohlini Augener, 1926, pp. 165-166. 



Collections. — Type collections from Tribune Bank, southern South 

 America, in 25 fathoms (deposited in the Swedish State Museum) ; 

 San Quintin Bay, Lower California, Mexico (many, collected by Dr. 

 Donald J. Reish) ; Cuchra Beach, Chile, in semiexposed sandy beach, 

 February, 1955 (many, collected by Dr. Eric Guiler). 



A small posteriorly incomplete, coiled specimen labeled Aricia ohlini 

 Ehlers in the Swedish State Museum has 20 thoracic setigerous segments 

 and 26 abdominal segments (the posterior end is missing). Segments 

 20 and 21 are transitional. The everted proboscis is a simple globular 

 pouch. Branchiae are present from the sixth setigerous segment ; they 

 are simple and continue on all segments. A subpodial lobe resembling a 

 ventral cirrus (fig. 1 ) is present from the last thoracic segment and 

 continues at least through segment 46, hence is largely abdominal in 

 occurrence. 



Thoracic neuropodia are simple transverse ridges without lobes or 

 papillae. They are provided with palisaded rows of uncini (fig. 3), 

 either unaccompanied by pointed or other setae or with an occasional 



