482 PROCEEDINGS OF THE ACADEMY OF [June, 



tori and glandular areas remain on the 2 preanal somites, and also 

 slightly indicated on the anal but bear no setae. 



Peristomium and last 3 somites without setae. First 3 setigerous 

 somites with a dorsal tuft of slender set£e and a single ventral aciculum, 

 but no crochets; other setigerous somites with a small dorsal fascicle 

 of slender setse and a ventral series of crochets, the number of which 

 increases for several somites caudad. 



The resemblance between the setae of this species and Nicomache 

 capensis is noteworthy. Slender setae of 3 forms, the first, which occurs 

 on all setigerous somites, is pale greenish-yellow, with a core of par- 

 allel fibres, long, tapering, with a distinct wing on one margin and a 

 much narrower one on the other, both leaving a long very fine tip free. 

 The second form is confined to an undetermined number of anterior 

 somites as far as X; colorless, exceedingly slender and very delicately 

 doubly fringed. The third form is found only posteriorly, the anterior 

 limit being imdetermined ; colorless, with a long, slender shaft of nearly 

 uniform diameter, the terminal part of which bears rather broad chaff- 

 like bearded processes, the exact arrangement of which cannot be deter- 

 mined but appears to be singly spiral toward the tip, paired toward 

 the base, the whole closely resembling the fruiting head of certain 

 grasses. 



Anterior acicula simple, stout, pointed, slightly curved fibrous spines 

 of a yellow color. 



Crochets yellow, with slender, tapering, curved, very fibrous stems, 

 strongly shouldered at surface of body, then constricted to a narrow 

 brittle neck, and again expanded terminally into a coarse broad head ; 

 terminal part unusually prominent and consequently frequently 

 broken off; principal hook prominent, acute, rather slender and, except 

 at the base, non-fibrillated ; supported and surmounted by 4-6 spines, 

 of which the first is large and vitreous, the others much smaller and, 

 like the expanded portion of the head, strongly fibrillated; beard 

 greatly developed, consisting of a transverse row of a small number of 

 tapering sickle-shaped hairs which arise from a stout transverse basal 

 plate, supported on a slight subrostral shoulder, and cur\'e high over 

 the apex of the principal hook to end in fine curled tips above its base. 

 The anterior crochets differ only in the position of the beard, which 

 arises much closer to the rostrum than in the more posterior ones, 

 and in their somewhat smaller size. 



The head and tail ends of the type specimens were foimd several 

 miles apart. 



Suruga Bay, 3,714, 60 fms., head; 3,725, 13 fms., caudal end. 



