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and is provided with a stout fascicle of upward bent bristles. In the neuropodium, that has a 

 triangular border, there is a dorsal group of simple setae, whorled below the tip and some 

 compound bristles (PI. XXIII, fig. 9) with a smooth shaft and a slender, multi-articulated 

 appendix, that ends in a thin, bifurcated tip; ventrally of these there occur three other setae 

 with a single-jointed appendix. The ventral part of this fascicle consists only of slender bristles, 

 with a multi-articulated appendix. 



Genus Leanira Kinberg '). 



Prostomium with a single median antenna (tentacle), usually with ctenidia at its basal 

 joint ; lateral antennae fused with the first parapodia. Parapodial and buccal ctenidia as well as 

 stylodes present. No dorsal cirrus on the third segment. Dorsal bristles simple, slender, with 

 spirally arranged, denticulated whorls ; setae of the ventral fascicle compound with pectinate- 

 canaliculate appendix, in some species however in its upper part some simple bristles, with 

 spinous whorls below the tip. Papillae of the proboscis "/^j. 



WiLLEY in 1905 has united under the name of St/ienokpis-) those Leanira-s'^&ci&s, that 

 are characterised "by the presence of a long tentaculum impar born upon a ceratophore, which 

 is provided with a pair of spatulate appendages", suggesting that the true Z^ff;«/ra-species were 

 distinguished "by the presence of a very small tentaculum impar inserted directly upon the 

 prostomium, not born upon a ceratophore." This suggestion, in my opinion. is not correct, 

 for Ehlers says about L. /lystricis^), that the tentacle emerges from the middle of the 

 cephalic lobe and consists of a cylindrical basal joint and a slender terminal part ; also 

 L. tctragona (Oerst.) ^) one of the first described species of Leanira shows a tentacle with a 

 conspicuous ceratophore and with ctenidia. Therefore I think that it is not allowed to divide 

 the species of Leanira in two groups on account of the length of the tentacle and of the ab- 

 sence or presence of antennal ctenidia. 



I. Leanira sibogae n. sp. PI. XXIV, figs. i — 3. 



Stat. 4. 7°42' Lat.S., 114°! 2' .6 Long. E. Anchorage of Djangkar (Java). Depth 9 M. 5 specimens. 



Stat. 19. Bay of Labuan Tring, West coast of Lombok. Depth 18 — 27 M. 2 specimens. 



Stat. 47. Bay of Bima. Depth 55 M. i specimen. 



Stat. 51. Molo Strait. Depth from 69 to 91 M. 7 specimens. 



Stat. 213. Saleyer Anchorage. Depth up to 36 M. 3 incomplete specimens. 



Stat. 313. Anchorage East of Dangar Besar, Saleh Bay (Celebes). Depth up to 36 M. i specimen. 



At the above-named Stations specimens of a Zf««/r^?-species were dredged, that could 

 not be identified with one of the known species. The longest of them, a female, measures 50 

 mm. in length and has about 100 segments. The smallest has only a length of 8 mm. and 

 consists of about 50 segments. They are pale red coloured, especially along the posterior and 



1) Loc. cit. p. 30. 



2) Loc. cit. p. 259. 



3) Z.W.Z. Bd. XXV, 1S74, p. 35, PI. II, figs. 5-1 1. 



4) M.\LMGREN, Nordiska Hafs-annulater, p. SS, PI. XI, fig. 14. 



71 



