No. 104.] 133 



PHYLLODOCE (Sav.) Malmgren. 



Malmgrex. Nord. Hafs-Ann., p. 94, 



Phyllodoce aeen^ n. sp. 



PLATK (II), V, FIGS. 10-12. 



Head bluntly rounded in front, diameter increasing backward to 

 the middle line, just back of the middle slightly constricted ; mar- 

 gins behind the constriction sti-aight; posterior margin with a deep 

 triangular emargination ; lateral lobes broadly rounded. 



Antennae short, conical, rather stout, their length about equal to 

 the anterior diameter of the head. 



Eyes situated at posterior third of the head, latero-dorsal, large, 

 circular, dark brown to black. 



Tentacular cirri ; first and second equal, reaching some distance 

 beyond the head ; second and third equal, about double the length 

 of the first, reaching back to the ninth or tenth segment, subulate. 

 On the first segment, in the triangular space between the posterior 

 lobes of the head, there is a small, blunt papilla, its length about 

 equal to the base of the triangle ; this papilla is obvious in fresh 

 specimens, but is seen with difficulty in alcoholic specimens. 



Dorsal cirri of the anterior segments (fig. 10), broad heart-shaped, 

 from the twenty-fifth segment somewliat quadrangular (fig. 11), and 

 with the inner margin abruptly turned up, presenting a narrow sur- 

 face nearly at right angles to the larger outer part of the cirrus ; the 

 line of union of the two surfaces is thickened and densely covered 

 with long cilia. 



Yentral cirri, lower margin convex, upper margin nearly straight 

 in front ; they are rounded externally, pointed behind. 



SetEe numerous, of one kind only (fig. 12), very long with a 

 flexible capillary termination ; the stem is roughened near the artic- 

 ulation by numerous projecting points ; the appendix is joined to 

 the stem by a delicate membrane, and is minutely denticulated along 

 its thin margin. 



Anal cirri short, conical. 



Color : on the dorsum each segment has a dark brown crescent on 

 both its anterior and posterior margin, while the intervening part is 

 green ; thus there are transverse, hour-glass shaped green markings, 

 alternating with spindle-shaped brown markings ; on the first ten or 

 twelve segments the brown falls a little short of the outer margins 

 of the segments. The dorsal cirri are greenish-white with a large 

 patch of brown at base, nor quite so dark as the brown of the dorsum. 

 Back of the middle of the body a second brown spot appears on the 

 outer central part of each cirrus. The ventral surface is light green 

 with a central brown spot on each segment, and a similar spot be- 

 tween the bases of the feet. The head, antennse and tentacular 

 cirri are white. 



