I 12 



podial fascicle, that in its upper part contains simple spinous as well as compound setae, the 

 specimens from the above-named stations ought to be identified with Sthenelais variabilis Potts 

 from Zanzibar and the Maldives ; unfortunately Potts' description does not contain many pecu- 

 larities neither about the head nor about the parapodia. The scales cover the whole dorsum 

 and are overlapping each other; the first pair excepted they are reniform, more or less 

 covered witli tubercles, that sometimes acquire the character of small spines. Rather long cilia 

 occur at their outer border, some of them arising from the surface of the elytron. The 

 prostomium is rounded trapezoidal, with a tentacle arising from the middle of its dorsum and 

 a pair of conspicuous eyes on each side of the latter ; the basal joint of the tentacle is trans- 

 versely. crrooved and bears two large aliform ctenidia, that cover the anterior eyes and extend 

 over the first parapodia. Its distal joint is not quite as long as the dorsal tentacular cirrus. 

 The palps are not very long, about twice as long' as the tentacle, bent backward, they reach 

 the 6'*' segment. The first parapodium bears two tentacular cirri, the ventral measuring about 

 a third of the dorsal one. The ventral cirrus of the second parapodium is not very long and 

 hardly reaches the distal end of the parapodium. The first branchial appendix occurs on the 

 second seo-ment. The dorsal cirrus of the third segment is represented by an obtuse tubercle. 

 The parapodia (PI. XXII, fig. 6) are characterized by a rather great number of stylodes ; be- 

 sides a short cylindrical appendage in the vicinity of the distal end of the acicula in both 

 branches of the feet, there occur along the ventral border of the neuropodium three or four 

 long stylodes. Moreover two or three stjdodes are situated next to the base of the ventral 

 cirrus, that is provided with a hook-like enlargement ; also the lip that surrounds the base of 

 the large neuropodial setae bears several small cylindrical lobes. The club-shaped notopodium 

 extends somewhat beyond. the neuropodium and bears a fan of long, curved bristles ; the neu- 

 ropodium has a triangular border and in the dorsal part of its bristle-fascicle is provided with 

 some simple setae, with spiral whorls below the tip. The shaft of its compound setae is not 

 always smooth in its distal part, but often obviously spinous. 



2. Sthenelais duèiosa n. sp. PI. XXII, fig. 7. 



< 

 Stat. 50. Bay of Badjo, West coast of Flores. Shore. i specimen. 

 .Stat. 313. Anchorage cast off Dangar Besar, Saleh Bay (Sunibawa). Reef. i specimen. 



At the above-named stations two anterior fragments of a St/iene/ais-species were col- 

 lected, that with regard to the appearance of the scales and the shape of the head much agree 

 with Sf/i. variabilis, but differ somewhat by the structure of their parapodia ; also the palps 

 appear to be somewhat longer than in the last-named species and being bent backward extend 

 to the 10"^ segment. In the 10* parapodium (PI. XXII, fig. 7) the neuropodial branch has a 

 triangular border, that next to the tip bears two fu.siform stylodes; both beset with some small 

 papillae ; its posterior lip consists of a large dorsal lobe, provided with four stylodes, and of a 

 smaller ventral lobe, also bearing 4 short cylindrical stylodes (with papillae). Moreover several 

 conical stylodes, situated next to each other, occur at the distal end of the ventral border. 

 The notopodium, somewhat club-shaped, shows on its frontal as well as on its posterior side 

 a couple of stylodes, beset with small papillae. 



68 



