NO. 3 HARTMAN : ORBINIIDAE, APISTOBRANCHIDAE, PARAONIDAE 265 



Distribution. — Phylo felix is known from Brazil (Kinberg, 1866), 

 Patagonia (Ehlers, 1897), California, in shallow dredging to 55 

 fathoms, Gulf of California south to La Paz, Mexico, in shallow dredg- 

 ing, East Falkland Islands, Antarctic Ocean (Monro, 1930), and 

 questionably Japan (Okuda, 1937). 



Phylo ornatus (Verrill), 1873 

 Plate 24, figs. 1-10 



Aricia ornata Verrill, 1873, pp. 596-597; Webster and Benedict, 1884, 

 p. 724; Andrews, 1891, p. 292; Sumner, 1913, p. 623; Pearse, 

 1942, p. 183. 

 Orbinia ornata Hartman, 1944a, p. 340; Hartman, 1945, pp. 28, 30. 

 Aricia macginitii Berkeley and Berkeley, 1941, pp. 40-41, figs. 7-10. 

 Phylo ornatus Hartman, 1951, pp. 79-80. 



Collections. — North Carolina south to southwestern Florida 

 (many) ; Mission Bay, California (some) ; San Quintin Bay, Lower 

 California, Mexico (several). 



Length is over 100 millimeters but the posterior end is seldom perfect 

 because of the high degree of fragmentation on preservation. The long 

 posterior branchiae and postsetal lobes present a ragged appearance, 

 especially of the postabdominal region. The thorax consists of an anterior 

 region of about 14 and a posterior one of about 16 segments, after which 

 the transition to the abdomen is abrupt. 



The prostomium is small, acutely pointed in front and much nar- 

 rower than the segments which follow. Thoracic notopodia have a 

 simple Ungulate postsetal lobe. Thoracic neuropodia of the anterior 

 region resemble one another except for a gradual increase in size pos- 

 teriorly. There are 3 to 5 rows of yellow uncini in anterior series and a 

 single row of pointed, slightly curved spinous setae in back. The lower- 

 most setae are uncinate (fig. 9). In posterior thoracic segments the neuro- 

 podial uncini of the upper half of the series are replaced by an anterior 

 row of 8 or more large, evenly spaced modified spines (fig. 1) accom- 

 panied by more posterior rows of slightly curved uncinate hooks like 

 those in front. The lower part of the neuropodium has setae as in front 

 except for a conspicuous fascicle of distally pointed setae located in an 

 inferior-posterior position. 



Modified spines are present in setigerous segment 15 to the end of 

 the thorax ; they are translucent amber or somewhat rust colored, due 

 to a coat of extraneous substance. When clean they are smooth, straight 



