A POLYNOID AVITH BEANCHIiE. 435 



mens have been seen; only two, the Mediterranean Poly o- 

 dontes maxillosus and the Northern Panthalis Oerstedi, 

 have been found by more than one observer, but even they 

 are not very abundant. I will enumerate the species in the 

 order of their foundation : 



1817. — Polyodontes maxillosus (Ranzani), Audouin and 

 Edwards. Mediterranean. 



Described and figured by Claparede (4), who 

 gives its synonymy and refers to previous descrip- 

 tions and figures. 

 1833. — Acoetes Pleei, Audouin and Edwards. Mar- 

 tinique. 



Single specimen, described and figured by the 

 founders (2), and further described by Quatrefages 

 (15). Grube (8) refers it to the genus Polyo- 

 dontes. 

 1841. — Polyodontes Blainvillei (Costa), Claparede. 

 Mediterranean. 



Single specimen, imperfectly described by Costa 

 (5), who calls it a " Sigalion." Referred to the 

 genus Polyodontes by Claparede (4) . 

 1855. — Polyodontes gulo, Grube. Red Sea. 



Single specimen, described and figured by the 

 founder (8). 

 1855. — Eupompe Grubei, Kinberg. Near Guayaquil. 

 Single specimen. 

 Panthalis Oerstedi, Kinberg. British and Scan- 

 dinavian coasts. 

 Panthalis gracilis, Kinberg. Near Rio Janeiro. 

 Single specimen. 



All three described (11 and 12) and figured (12) 

 by their founder. 

 1855. — Acoetes lupina, Stimpson. South Carolina. 



Imperfect description by Stimpson (16). 

 1876. — Eupanthalis Kinbergi, Mcintosh. Adventure 

 Bank. 



Described and chsetse figured by the founder (13). 



