16 ZOOLOGISCHE MEDEDEELINGEN — DEEL I. 



half the breadth of the head. No eyes are visible. There are 15 pairs of 

 elytra, not only overlapping each other in the middle of the dorsum, 

 but also covering entirely the parapodia ; they are large, reniform, with 

 the scar of attachment nearly in the centre and numerous ramified ner- 

 vous stems radiating from it. Their surface is bare, except the region 

 behind the concave border, that is covered with small tubercles; their 

 margin is smooth. Dorsal tubercles are present. The neuropodium is 

 strongly developed, triangular ; its fascicle consists of a dorsal part, with 

 slender setae, hardly dilated, finely serrated, while its ventral part con- 

 tains stouter bristles, with simple curved tip and obsolete fringes along 

 the dilated distal part. 



Lagisca malayana n. sp. 



Siboga-expedition, Stat. 273, anchorage of Poeloe Jedan (Aroe-islands). 



Two specimens, that unfortunately lost their elytra and almost all 

 their cirri, could not be identified with one of the known species. They 

 are characterized by a peculiar coloration on their dorsum ; the blackish 

 median area being separated by some longitudinal and transverse pale 

 lines in a number of regular compartments, lying in three transverse 

 rows. Head broader as long, divided by a median groove in two halves, 

 with two pairs of large eyes, the posterior of which are situated in front 

 of the posterior border of the head, whereas the anterior ones lie on the 

 lateral prominences. Lateral antennae slender, densely beset with long 

 cylindrical papillae, measure about two thirds of the length of the palpi. 

 Parapodia with both lobes nearly equal in length : ventral lobe rounded 

 triangular, with a short curved appendix ; its setae of the usual shape, 

 with bifid tip and dilated distal part, with laciniated fringes. Dorsal lobe 

 rounded, with cylindrical tip, enclosing the acicula ; its bristles slightly 

 curved, with smooth distal extremity and conspicuous dentate rows be- 

 neath it. Dorsal tubercles large. 



Scalisetosus Mc Intosh 1 ). 



Body of moderate length. Eyes large, placed close together on each 

 side of the prostomium. Elytra 15 pairs or more, inserted on the same 

 segments as in the preceding genera; they cover the dorsum in front, 

 but posteriorly leave the central part bare. Dorsal bristles slightly curved, 

 with some blunt spines; ventral ones hooked, with semilunar cusp. 



1) British Annelids, p. 372. 



