131 



cirrus is rather long and projects beyond the distal part of the parapodium. In the succeeding 

 segments the number of spine-like setae (setae aristatae of other Acoëtidae) increases, but they 

 are not always smooth, as figured by Malaquin and Dehorxe (fig. 9), but often show a fascicle 

 of short spines beneath the tip, like in those of Panthalis a. o., only the arista appears to 

 be absent in Eiipolyodontes (PI. XXVIII, fig. i). In Eupolyod. mitsiikurii (according to Izuka) 

 these bristles should ha\'e a smooth tip, whereas in E. cornisJiii a row of spines should be 

 visible. The branchiae commence at the dorsal side of the 6"^ parapodium as a simple, 

 tubular appendix; in the succeeding one, the 7''% there is a couple of them, fixed at the 

 elytrophore. In the 9''^ parapodium the first spinning-gland appears from under the notopodium, 

 that has acquired the appearance of a fleshy lip ; at the same time a couple of pencil-bristles 

 (setae bipennato-penicillatae) becomes- visible in the dorsal part of the neurojiodium (PI. XXVUI, 

 fig. 3). They have a very long, narrow shaft, that at some distance from the tip grows 

 somewhat broader and then tapers distally ; beneath the tip there is on each side of the shaft 

 a row of long, flat spines, whereas inferiorly there is another group of shorter spines. In the 

 posterior segments these pencil-bristles have a shorter, plumper shape (PI. XXVIII, fig. 2). 



That Eupolyodo7ites gulo (Gr.), from the Red Sea, also should be found in the neigh- 

 bourhood of Amboina, as stated by Marexzeller and afterwards by Collin, appears some- 

 what improbable to me ; it may be suggested, that both authors overlooked the branchial 

 appendages on the prostomium, that characterized this species, as stated by Malaquin and 

 Dehorne. Neither can I approve Fauvel's suggestion ^) that Eupolyod. mitsttkurii Izuka should 

 be identical with Eupolyod. gulo Gr. {Eupolyod. cornis/iii Buch.), because of the great diffe- 

 rence in length of the palps in both species. 



Genus Polyodontes Renieri-). 

 [Acoëtes Aud. & Edw. ^), Eupompe Kinberg''], Pantltalis Kinberg''), pro partej. 



Eye-peduncles (ommatophores) arising from the lateral frontal corner of the prostomium. 

 Median antenna (tentacle) inserted in the dorsal median line of the prostomium ; lateral antennae 

 arising from the underside of the ommatophores. Parapodia with branchial papillae on the dorsal 

 surface. No true pencil-bristles (setae bipennato-penicillatae) present. 



I. Polyodontes sibogae n. sp. PI. XXMII, figs. 4 — 10. 



Stat. 169. Anchorage oft" Atjatuning (W. coast of New Guinea). Depth 57 M. i incomplete 

 specimen. 



Stat. 274. 5°28'.2 Lat. S., 134° 53.9 Long. E. North oft' Aru Islands. Depth 57 M. i incom- 

 plete specimen. 



At both above-named Stations an anterior fragment of a P olrodon tes-s,'^&c\&s was dred- 



1) IXe Congres intern, de Zoölogie tenu a Monaco, 1914, p. 470. 



2) Tavole per servire alla classific. e conosc. degli Animali, Padova, 1S17 (teste L. Agassiz). 



3) Ann. Sc. natui-. t. XXVII, 1832, p. 435, PI. X, figs. 7 — 14. 



4) Loc. cit. p. 24 and 25. , 



87 



