67 



superficial secondarv areolation, another reticulum, which may be called the interstitial 

 reticulum, comes into view, the meshes of which do not coincide with the former." This is 

 not the case in Iphione ciincx: here nothing is to be seen as the thick wall of the areolae. 



Sub-famil)- Polynoinae. 



Bod)- usually short, rareh' elongate, consisting of 1 7 segments {O/ij^olepis) or more. 

 Elytra 9 pairs {O/igolepis) or more, inserted on segments 2, 4, 5, 7 9 .... 23, 26, 29 etc, 

 partly or totally covering the dorsum. Prostomium with 3 antennae and usually two pairs of 

 sessile eyes. Proboscis with '/,, papillae and four horny jaws with a smooth edge. Bristles 

 unjointed. Two anal cirri. 



I. L e p id o n o t i d ae. 



Genus Lcpidonotus Leach. 



Including only those species, that consist of 27 somites and are provided with 1 2 pairs 

 of elytra ; notopodial bristles all similar. 



I. LcpidoJiotiis acantholepis Gr. PI. XV, figs. 3 and 4. 



Grube, Annulata Semperiana, p. 24, PI. II, fig. i. 

 IMiCHAELSEN, Polvchaeteii von Ceylon, 1892, p. 5. 



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



Stat. 220. Anchorage off Pasir Pandjang, West coast of Binongka. Reef. 2 specimens. 



Stat. 234. Nalahia Bay, Nusa Laut Island. Reef. i specimen. 



Stat. 285. 8°39'.i Lat. S., I27°4'.4 Long. E., South coast of Timor. Depth 34 M. i specimen. 



This species, mentioned by Grübe from Upolu and the Philippines, was afterwards found 

 by Driesch in the neighbourhood of Ceylon. Like in the specimens from the Philippines and those 

 from Ceylon also in some of the Siboga-specimens the elytra are much smaller than in the worm 

 from Upolu and therefore also the number of tubercles is much smaller than in the last-named 

 specimen ; the tubercles also are much more different in size, as might be inferred from Grube's 

 figure. The surface of these tubercles shows a reticular structure, due to the presence of small 

 scales, that sometimes acquire the appearance of little .spines; along the margin of the elytra 

 here and there occur short cylindrical papillae. Michaelsen has rightly stated, that the ventral 

 bristles are not bifid, as mentioned by Grube, but trifid; for there are two small conical teeth 

 at the ba.se of their large faintly bent tip (PI. XV, fig. 3). They correspond to the largest teeth of 

 the distal transverse row in other Lepidonotus-species. The dorsal bristle-fascicle is rudimentary 

 and consi-sts of a stout acicula and some few slender bristles, serrated along both edges and 

 transversely grooved (PI. XV, fig. 4). There are two long anal cirri, measuring a third more than the 

 last dorsal cirri. If this species is to be ranged in the genus Lepidonotns, henceforward in the 

 diagnosis of that genus the phrase "elytra, covering the dorsum entirely" ought to be cancelled. 



