POLYCH^TA-BENHAM. 35 



The ventral chseta; (fig. 17-19) are about twenty-four in number; each is, 

 shaped like a spear head, the frilled region is short and marked by many very 

 fine closelv-set pectinated frills which take an undulating course across the bristle, 

 and are visible along both edges. The chaetse are not all alike, some being more 

 slender and having a longer frilled region than others. The frills commence at some 

 distance from the tip, which is curved and carries a short sub-apical tooth. 



I have placed this species in Willey's genus, which is defined as follows : — ■ 

 " A polynoid; antennae arising at a lower level than the tentaculum impar, segments 

 and elvtra numerous." It does not fit into any other genus, though it is remarkable 

 that the two species should occur in such wddely separated localities, the type species 

 living on the shores of Ceylon. 



Locality.- — 



Of? Maria Island, Tasmania, 1,300 fathoms. 



' Genus Physalidonotus Ehlers. 



Physalidonotus rugosus Benham. 

 Benham (1915), p. 182, pi. XXXVIII, figs. 16-22 ; pi. XXXIX, figs. 23-25. 

 Two individuals were obtained in the neighbourhood of the spot at which the 

 type was taken. 



Locality. — Off Maria Island, Tasmania, 65 fathoms. 

 Distribution. — Bass Strait, coast of Victoria. 



Genus Harmothoe Kinberg sensu-lato. 

 Harmothoe .'-pinosa Kinberg. 

 H. spinosa Kinberg (1855), p. 386. 

 H. spinosa Kinberg (1857), p. 21, pi. VI, fig. 31. 

 Polynoefidlo Grube (1877), p. 515. 

 P. vesiculosa Grube (1877), p. 514. 

 Lagisca antarctica Mcintosh (1885), p. 80, pi. XIII, fig. 1 ; pi. XVI, fig. 3 ; 



pi. XVIII, fig. 1 ; pi. VIA, figs. 10-11. 

 L. magellanica Mcintosh (1885), p. 82, and the varieties of this species. 

 H. spinosa Ehlers (1897), p. 12. 



H. spinosa Willey (1902), p. 264, pi. XLI, figs. 1-4 ; pi. XL! 11, figs. 1, 2, 4-8. 

 H. spinosa Ehlers (1908). p. 43. 

 H. spinosa Ehlers (1912), p. 10, pi. I, fig. 8. 

 H. spinosa Ehlers (1913), p. 438, pL XXVI, figs. 1-12. 

 H. spinosa Gravier (1906), p. 33. 



H. spinosa Gravier (1911), p. 88, pi. V, figs. 54-.59 ; pi. VI, figs. 64-69. 

 H. spinosa Fauvel (1916), p. 421, pi. VIII, figs. 8-9 (chfefce). 

 H. spinosa Fauvel (1917), p. 179, pi. Vf, figs. 47-48 (head). 



(Plate fig. 21.) 



