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of the usual type, with an acute, bare distal end. According to Fischli's description, tliese 

 bristles should be smooth. The ventral cirrus does not extend to the extremity of the neuro- 

 podial lobe. The head is more broad than long, dotted with a brownish pigment especially in 

 its anterior part ; it is divided by a median dorsal groove in two halves, that have a rounded 

 frontal border and are provided with a short peak. In the median line a short, oval tentacle 

 arises, that presumably lacks the distal joint; on each side a short antenna is situated, not 

 quite as long as the head, with a rather thick basal part and filiform tip. The palps are stout, 

 twice as long as the head, tapering di.stally, faindy annulated ; according to Fischli they should 

 have distinct annular grooves. There are two pairs of large eyes, far remote from each other; 

 the anterior pair is situated in the middle of the lateral side, the posterior pair in front of the 

 posterior margin of the head. The median area of the dorsum is brownish, on each segment 

 being divided by a pale, transverse line in an anterior broad and a posterior narrow field. The 

 anterior part of the dorsum however is colourless. The largest specimen has a length of about 

 15 mm.; the number of its segments amounts to 40. 



2. Polynoë kampeni Horst. PI. XXI, figs. 13, \Afa and b. 



Horst, Zool. Mededeel. R. Museum Nat. Historie, Leiden, vol. I, 191 5, p. 20. 



3° 12' Lat. S., ii6°38' Long. E. South East off Borneo. Dec. 1908. P. N. VAN K.\MrEN. 

 I specimen. 



A slender worm, long about 10 mm.; the number of its segments amounts to 44. The 

 head (El. XXI, fig. 13) much agrees with that of Lagisca magellanüa, var. Grubei Mc Int. 

 (Challenger Annelida Polychaeta, PI. III, fig. 5); it is divided by a median groove into two oval 

 halves, each terminating in a prominent frontal peak. Both pairs of eyes are situated on the 

 posterior half of the head; the anterior pair a little behind the middle of the lateral 

 side, the other pair in front of the posterior margin. The tentacle is slender, somewhat longer 

 than the head. The lateral antennae are tiny and rather short, about a fourth of the length 

 of the tentacle. The palps are stout in their basal part. terminating in a filiform tip. There 

 have been 18 pairs of scales, but only the posterior ones are left and cover the anal end of the 

 body. They are elliptical, translucent, finely granular, entirely smooth without any appendages; 

 the scar of attachment is placed somewhat eccentrically, with a nerve-ganglion in its vicinity, from 

 which numerous dichotomously ramifying stems are emerging. The ventral branch of the parapodia 

 is more developed than the dorsal one, and has an elongated triangular lobe ; its fascicle con- 

 tains in its ventral part setae (PI. XXI, fig. 14^5) with a simple curved tip, without secondary 

 process and with a subterminal dilated part, finely denticulated. Of the dorsal bristles (PI. XXI, 

 fig. \\a) 2. few have a subterminal dilated part with laciniated fringes, whereas other are slen- 

 der, not dilated, finely denticulated. The notopodium, with a short cylindrical lobe, enclosing 

 the acicula, has the bristles slightly curved, denticulated. The dorsal cirri are long and slender, 

 tapering distally, extending beyond the extremity of the bristle-fascicles ; the ventral cirrus extends 

 somewhat beyond half the length of the foot. 



59 



