238 PROCEEDINGS OF THE ACADEMY OF [April, 



styles tapering to delicate tips. On the type they reach to the fol- 

 lowing segments; that of I to VII, dorsal of II and III both to IX, 

 ventral of II to VI or VII. On the cotype, which has the anterior 

 segments much contracted, each reaches about three segments farther 

 caudad. 



The body of the type is slender, slightly depressed, flattened ventrally, 

 widest in anterior fourth, and tapers regularly caudad; the length of 

 the segments varies from one-fifth the width anteriorly to two-thirds 

 width posteriorly. As noted above the cotype is much contracted 

 and consequently much stouter. Fygidium unknown. 



Parapodia (Plate VII, fig. 3) uniramous, prominent, strictly lateral, 

 posteriorly equaling width of somites. That of I a tentacular cirrus 

 (neurocirrus) only; of II dorsal and ventral tentacular cirri (notocirrus 

 and neurocirrus); III the first setigerous. Typical parapodia consist 

 of somewhat flattened neuropodia supported by a single, stout, tapered 

 aciculum and divided at the distal end into a low, entire post-setal lip 

 and a slightly more prominent presetal lip divided by a notch into 

 supra-acicular and subacicular lobes, to the dorsal border of the latter 

 of which the slightly curved end of the aciculum is adherent. 



Foliaceous notocirri begin on IV and foliaceous neurocirri on III; 

 both are prominent and the former strongly imbricated on the dorsum 

 of the parapodia, Notocirrophores prominent, erect, well separated 

 from the neuropodia, more than half as long as the latter and equally 

 broad. Styles not strongly asymmetrical, with basal auricles only 

 slightly developed, those of anterior segments nearly regularly ovoidal, 

 with bluntly rounded ends and about two-thirds as wide as long. 

 Farther back they increase in size and become more slender (twice 

 as long as wide) and more acutely tipped, without any trace of the 

 truncate end seen in so many species, though the tips of some are 

 slightly recurved. On middle somites they approach nearer to the 

 ovate-lanceolate form usual in Eulalia rather than the form usually 

 characterizing PhyUodoce. In the posterior third they again become 

 shorter and broader — much like poplar leaves — with rather abruptly 

 acuminate tips. Rather firmly attached, of thin, membranous tex- 

 ture and with a striated border of colored glands. Neurocirri attached 

 by low, broad eirrophores to the bases of the neuropodia. Styles all 

 very large and foliaceous and projecting one-third or more of their 

 length beyond the neuropodia. On the first few segments they are 

 very broad and subelliptical, but soon become more acute and asym- 

 metrical and gradually much more elongated and slender. 



Setse (Plate VII, fig. 4) all colorless, in fan-shaped supra- and sub- 



