366 THE ANNELIDA POLYCHAETA. 



of Chaetopterus and the name of the family must be Tricoeliidae. Mcintosh 

 adopts variopedatus but recognizes 1848 as the date of publication, and in the 

 synonymy Usts pergamentaceus with 1830 as the date, a procedure difficvdt to 

 justify. While some pages of Renier's work were apparently printed, there is 

 no evidence that his incomplete work was ever distributed , and in the Uterature 

 no definite citations to it are to be found. 



The type of Grube's genus Phyllochaetopterus, gracilis, has not been iden- 

 tified with certainty, I believe, since the time of its first description. Grube 

 attributes but a single pah* of tentacular appendages to his form and describes 

 these as short. It is generally assumed that Grube's specimens had lost the true 

 tentacles. As the genus is now accepted, two pairs of appendages are present 

 on the peristomium; but there must remain some doubt until gracilis has been 

 reidentified and fully described, as to whether that species is really congeneric 

 with the more recently described ones. 



Chaetopterus Cuvier. 



Regne anim., cd. 3, 1830, 3, p. 208. 



Tricoeiia Renier, Osserv. postume, 1848, p. 35. 



Chaetopterus pergamentaceus, Cuvier. 



Regne animal, ed. 3, 1830, 3, p. 208. 



Chaeloptents nnriegicus Sars, Beskr. og lagtt., 1835, p. 54, pi. 11, fig. 29a-29h. 



Tricoeiia varioyedata Renier, Osserv. postume, 1848, p. 35, pi. 8. 



Chaetopterus sarsii Sars, Nyt mag. naturv., 1863, p. 302. 



Chaetopterus insignis Baird, Trans. Linn. soc. London, 1864, 24, p. 477, pi. 49, fig. 1-S. 



Chaetopterus valencinii Quatrefages, Hist. nat. anneles, 1865, 2, p. 210, pi. 12, f. 1. 



Chaetopterus leuckartii Quatrefage.'^, Ihid., 18G5, 2, p. 216. 



Chaetopterus quatrefagesii Jodrdan, Not. zool. anat. Chaetop., 1809. 



Chaeliipltrui rarioj.edatus McIntosh, Brit, annelids, 1915, 3, pt. 1, p. 121. 



This interesting annelid appears to have a very wide distribution. De- 

 scribed originally from the Caribbean Sea, it has since been recorded under vari- 

 ous specific names from Norway and Sweden, the British Islands, and the coasts 

 of France, Mediterranean Sea, Red Sea, coasts of New England and North 

 Carolina, Strait of Magellan, and Chile. I am unable to find reliable differ- 

 ences between specimens collected at Panama and those from the Atlantic side 

 or between these and the European forms. C. pergamentaceus and norvegicus 

 both have priority over variopedatus, the most commonly used name. 



Locality. Panama. March, 1891. Several specimens and a number of 

 tubes. 



