HARMOTIIOE HIIISUTA. 53 



considerably shorter than this; it is dusky in color; it is terete, a little narrowing 

 to near the middle of the length and then more quickly narrowing into the slender 

 terminal filament. The palpi in length surpass the lateral tentacles. They 

 are stout proximally, narrow strongly distad and toward the end are more 

 abruptly reduced and end in a paler, slenderly conical tip. Dusky in color. 

 (Plate 2, fig. 2). 



The parapodia of the peristomium lie close at the side of and partly beneath 

 the prostomium. Each bears three curved setae of the notopodial type. 



The metastomial somites are all distinctly separated. Excepting toward 

 the end of the body they are of nearly uniform length which is medium. The 

 first three somites on the ventral side are bent caudad at the middle into a short 

 subrectangular flap or tongue-like process. Nephridial papillae low, rounded. 



Parapodia prominent but shorter than the width of the somites. A typical 

 parapodium at the proximal end is very deep but is compressed anterocaudally. 

 The neuropodium is a short subcylindrical process extending obliquely dorso- 

 ectad from near the middle of the dorsal surface of the parapodium; distally it 

 is truncate, the distal surface bearing the numerous setae, and the ventral edge 

 is extended into a slender, subulate acicular process. The neurocirrus is attached 

 on the ventral surface proximad of the middle; the cirrophore is short and 

 narrows distad to the base of the style which at its beginning is of the same 

 width; the style is short and subulate, reaching the bases of the nearest neuro- 

 podial setae but fails much of reaching the end of the neuropodium; the cirro- 

 phore is dark but the style pale. The notocirri are stout and subcorneal, 

 usually darkened or dusky; they are densely clothed with long ciha mostly 

 exceeding in length the diameter of the style. (Plate 2, fig. 3). 



The acicula are pale, extending into the acicular processes but not pro- 

 jecting beyond the neuropodial, and but little beyond the notopodial, process. 

 Neuropodial aciculum much stouter than the notopodial. Neuropodial setae 

 much exceeding the notopodials in length; arranged in vertical series spreading 

 in fan-like manner; about forty in number in the parapodia of the median region. 

 Each consists of a slender shaft and a spear-Hke head, the seta gently curved 

 from a little below the head to the tip. Head bidentate, the principal tooth a 

 Httle curved, the subapical tooth small, straight, and acute, parallel, or nearly 

 so, to the axis of the principal tooth; convex side of the head densely pectinate 

 from the base nearly to the lower tooth. The most ventral neuropochals are 

 shorter than the others, with the heads much reduced in length. (Plate 2, fig. 7, 8 ) . 

 The notopodial setae are very numerous and are densely arranged in whorls; 



