104 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



antennae are easily overlooked ; they are much smaller and inserted far 

 back at the posterolateral margin of the prostomium, near the origin of 

 the first neuropodium. There are no visible eyespots. Nuchal organs are 

 located at the postectal margins of the prostomium. 



The proboscis (everted) has 20 terminal bifid papillae, the 10 of 

 each side separated from each other by a middorsal and midventral low 

 papilla. The subterminal papillae are in 22 rows with 3 to 5 longitudinal, 

 though irregular rows, the largest are distal and they decrease rapidly in 

 size proximally. There is a much larger middorsal one. The proximal 

 surface of the proboscis is smooth. The jaws (seen by dissection) are 

 broad, triangular, amber colored with darker tips. 



The first parapodium is directed forward at the sides of the prostom- 

 ium. Its neuropodium is much larger than its notopodium. The former 

 is in front of, and below the latter and projects far forward so as to be 

 at the sides of the prostomium. Its acicular lobe carries 10 or more long, 

 slender preacicular setae (there are no postacicular setae) arranged in a 

 crescent about the aciculum. The neuropodium is enlarged as a broad, 

 flat lobe that is continuous with a digitate ventral cirrus. The first 

 notopodium is above and somewhat behind the neuropodium; it is a 

 low acicular cone lacking cirri but with a crescentic preacicular fascicle 

 of about 20 setae and a much weaker postacicular series of 7 delicate 

 setae. Other parapodia are lateral in position and normal in their parts. 

 The second through fourth segments have preacicular fascicles that 

 exceed in size and length the postacicular fascicles. Thereafter the post- 

 acicular setae come to be the more conspicuous ones. 



Interramal cirri are first present from the fourth segment and con- 

 tinued back to near the end ; the last 4 or 5 segments lack them. These 

 cirri are recurved, inscribing nearly a circle where best developed; they 

 are tapering and visibly ciliated at the margins. 



Acicular lobes in anterior parapodia are broad and short, with a 

 slight incision at the place where the aciculum emerges. Those in middle 

 segments are much broader and also slightly incised where the aciculum 

 emerges. In posterior segments the neuroacicular lobe comes to be more 

 prolonged at its end than the comparable notoacicular lobe; both are 

 conical where the aciculum emerges. Setae appear dusky in mass but are 

 pale yellow seen individually. Preacicular setae are barred and distally 

 pointed. Postacicular setae are of 2 kinds; most are long, slender and 

 appear smooth along the cutting edge. A few in the middle of the series 

 differ in having, at the widest part, near the base of the cutting edge, 

 5 to 7 prolonged, pointed teeth, so large as to be visible even under 

 moderately low magnification. 



