172 ANNELIDA POLYCHAETA. 



ventral cirrus of the same length as the inferior ligule. 

 In the anterior feet the ventral and dorsal cirri greatly 

 enlarged at their base. In the inferior fascicle of the ven- 

 tral lobe sometimes a heterogomph setose bristle occurs. 

 At the feet of the posterior body-region the lip of the 

 dorsal lobe is conically produced , with a narrow oblong 

 oval lamella at the base of the ventral border, the ven- 

 tral lobe shows an obtuse , truncated anterior lip and a 

 large lamellar posterior one. The superior ligule, about of 

 the same length as the dorsal lobe , is provided at its dor- 

 sal side with a small rounded lamella in front of the base 

 of the dorsal cirrus, and with a rather elongated lamella 

 behind it; the inferior ligule, projecting as far as the ven- 

 tral lobe, has a large conical process near its base. Dorsal 

 cirrus much longer than the superior ligule, smooth in the 

 females , with eight papillae at the ventral side of their distal 

 end in the males; ventral cirrus a little longer than the in- 

 ferior ligule, on the dorsal side with two narrow tongue- 

 shaped lamellae , on the ventral side with an oblong lamella 

 near its base. Both lobes have setose bristles with knife-shaped 

 terminal pieces of ordinary appearance. Anal segment with 

 longitudinal grooves; anal cirri reaching as far as the pos- 

 terior 6 segments. 



Paragnathi of proboscis : Maxillary region , I. group of 

 4 or more ; II. semilunar group ; IV. large group ; III. a group 

 consisting of a large, transverse median patch and 2 or 3 

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

 teeth ; VI. short, curved ridge ; VII. and VIII. belt of two series 

 of teeth, alternating with each other. — Malayan Archipelago. 



In the same bottle , which contained N. malayana , I 

 found more than hundred examples of this small, cha- 

 racteristically marked species. Its body-length is very dif- 

 ferent and varies from 27 to 12 mm.; nevertheless the 

 small specimens are also in a state of sexual maturity and 

 have about the same number of segments as the larger 

 ones. The number of male and female specimens seems to 

 be nearly equal. 



Notes from the Leyden Mummui. Vol. XI. 



