97 



indica. The antennae have a stout basal part and a slender distal joint, neavly as long as the 

 head ; the tentacle is only represented by its basal joint, arising from the anterior part of 

 the median dorsal groove. The palps are stout, ciliary, tapering distally, thrice as long as the 

 head. There occur two pairs of large eyes ; the anterior pair is situated in the middle of the 

 lateral side of the head, the posterior pair lies in front of its posterior margin. 



According to Pons the species is a widely distributed form in the Indian ocean, allied 

 to Lagisca crozetensis Mc Intosh. 



7. Lagisca (Polynoc) mimita Potts. 



POTïS, loc. cit. p. 337, Pi. XIX, XX and XXI, fïgs. 12, 31, 42 and 43. 



Stat. 99. 6°7'.5 Lat. N., 120° 26' Long. E. Anchorage off North Ubian. Depth 16 — 23 M. i 

 specimen. 



A small, badly preserved worm, that certainly must be identified with the above-named 

 species from the Maldives. The body, tapering posteriorly, has a length of 6 mm. and consists 

 of 38 segments ; it is a female, which unfortunately lacks all the elytra as well as most of the 

 dorsal cirri. The species is characterised by the great difterence in length and appearance of 

 the ventral and the dorsal bristles of the neuropodial fascicle ; the dorsal setae have a slender, 

 elongated, serrated, distal region, whereas in the ventral ones this region is short and swollen. 

 In the basal part of the tentacular cirri I could also observe some stout slightly curved bristles, 

 not mentioned by Potts. 



8. Lagisca sp. 



Stat. 51. Madura Bay. Deptli from 69 to 91- M. i specimen. 



A female worm, long 12 mm., with about 40 segments, that lacks all its elytra and 

 most of its cirri, too incomplete for a satisfactory description or Identification. 



Genus ScalisetOSUS -Mc Intosh '). 



Body of moderate length. Eyes large, placed closely together on each side of the pros- 

 tomium. Elytra 15 pairs or more, inserted on the same segments as in the preceding genera; 

 they cover the dorsum in front, but in the posterior region leave the central part bare. Dorsal bristles 

 slightly curved, with some blunt spines; ventral bristles hooked, with semilunar cusja. 



Though the hrst-described species of this genus, Scalisctostis cei'amensis, was mentioned in the 

 Challenger Annelida, only fifteen years later, in the British Annelids (p. 372) Mc Intosh gave the 

 diagnosis of this genus; afterwards Marenzeller"), Moore^) and Izuka*) have des^ribed from the 



i) Challenger Annelida, p. 103. 



2) Südjapanische .'Vnneliden, lil, p. 13, PI. III, fig. 12. 



31 Proc. Acad. Nat. Sc. Philadelphia, Vol. LV, 1903, p. 403 



4) Loc. cit. p. 59. 



53 



