64 

 2. Aphrogenia villosa, \-ar. lacvis n. v. 



Stat. 2S5. 8° 39.1 Lat. .S., I27°4'.4 Long. E. Anchorage .South coast of Tiinor. Depth 34 ^L 

 1 specimen. 



At tlie South coa.st of Timor a worm was dredged, tliat must be considered as a variety 

 of the preceding species. It has a length of 8 mm. ; its dorsum is dark grey with a glossy 

 appearance, whereas on the ventral side a row of indistinct black spots occurs on each side 

 of the niedian line. Like in Aphrog. villosa the dorsal bristles of the elytrophore-segments are 

 longer than those of the cirriphore-ones and arch over the dorsum ; these bristles are also 

 provided at the tip with a cap of villi, however their shaft is smooth and does not show 

 a n \' tracé of t r a n s v e r s a 1 r i cl o- e s. 



ö 



3. Aphrogenia nigi-optinctata Horst. PI. XIV, fig. 13. 



Horst, Zool. Mededeel. R. .Musciini Nat. Historie, Leiden, vol. W, 1916, p. 77. 



Stat. 37. Sailus Ketjil, Paternoster Islands. Depth 27 M. and less. i specimen. 

 Stat. 315. Anchorage east of Sailus Besar, Paternoster Islands. Depth up to 36 RL i young 

 specimen. 



A small worm, measuring only 7 mm. in length and consisting of about 27 segments. 



The body is pale-grey coloured with a black spot on the dorsum of the parapodia of 

 the cirriphore-segments. There are 1 3 pairs of elytra, much resembling in shape and appea- 

 rance those of Ap/irog. z'i//osa, onlv somewhat more elongated transversally ; besides the minute 

 papillae they show some larger round cellular figures, as present in the elytra oi Aphrog. alba. 



The dorsal bristles (PI. XIV, fig. 13) of the elytrophore-segments are not so long as 

 in Aphrog. villosa, and do not reach to the meclian dorsal line ; they are pale-yellow, longitu- 

 dinally striated and possess at the tip a cluster of c o a r s e, h i g h 1 y r e f r a c t i v e t u b e r- 

 c 1 e s, that somewhat resembles the swelling below the tip of the short dorsal bristles of Her- 

 mione h\strix. 



In the specimen of Stat. 315 these tubercles are not visible; there only a cap-like swel- 

 ling is present. The ventral bristles are simply bifurcated, without accessory teeth. The dorsal 

 cirri are very long, with a clavate terminal joint ; the ventral ones are rather short, conical, 

 with an enlarged tip, not reaching to the distal end of the foot. 



.Sub-family Iphionixae. 



Bod\- short, consisting of 29 segments. Proboscis with ^o papillae and four jaws with 

 a denticulated edge. Only two antennae and a facial tubercle instead of the tentacle. Elytra 



12 or 13 pairs, provided with hexagonal areas, situated on segments 2, 4, 5, 7, 9 23 



and 27. Parapodia apparently uniramous, their notopodial fascicle arising at their anterior side; 

 notopodial bristles .slender, with cup-shaped transverse rows, neuropodial ones stouter, with 

 simple hook and a close series of transverse spinose row^s beneath it. 



