168 ANNELIDA POLYCHAETA. 



uient, in the Q at the 23rd segment. In the anterior body- 

 region the lip of the dorsal setigerous lobe obtusely conical, 

 longer than the lips of the ventral lobe , which measure 

 about a third of its leugth. The ligules have the same 

 shape as the dorsal lobe, the superior of them is a little 

 longer, the inferior about of the same length. Dorsal cir- 

 rus extending somewhat beyond the tip of the superior 

 ligule, ventral cirrus reaching to the middle of the inferior 

 ligule. In the anterior feet both cirri show a lamellar en- 

 largement of their basal portion. In the inferior fascicle of 

 the ventral lobe there occur, besides the heterogomph fal- 

 cate bristles, a couple of heterogomph setose ones. In the 

 feet of the middle body-region the lip of the dorsal lobe 

 is considerably produced , with an oblong oval lamella at 

 its base; the ventral lobe has a cordiform anterior lip and 

 a large, round, lamellar posterior one. The superior ligule, 

 extending a little beyond the tip of the dorsal lobe , bears 

 near the base of the cirrus a rather large, oblong, oval 

 lamella ; the inferior ligule , not reaching to the distal end 

 of the ventral lobe , is furnished with a conical process 

 near its base. The dorsal cirrus is longer than the superior 

 ligule , smooth in the females , in the males provided with 

 papillae on its distal half. The ventral cirrus longer than 

 the inferior ligule, with an oblong, rhomboidal lamella 

 near the base of its ventral border and two long, narrow, 

 tongue-shaped lamellae at the dorsal edge. 



Bristles with knife-shaped terminal pieces of ordinary appea- 

 rance occur in both lobes. The anal segment shows longitudinal 

 grooves; the anal cirri as long as the posterior 10 segments. 



Paragnathi of proboscis : Maxillary region , I. two coni- 

 cal teeth behind each other ; II. small triangular patch ; 

 IV. larger semilunar group; III. group consisting of a large 

 transverse patch in the middle and a lateral one of 2 or 3 

 teeth on each side ; basal region , V. triangular group of 3 

 paragnathi; VI. short transverse ridge, slightly notched in 

 its middle ; VII. and VIII. a belt of three rows. — Malayan 

 Archipelago , Hoedt. 



Notes froru the Leyden Museum , "Vol. XI. 



