PSEUDONEREIS 227 



Perinereis Kinberg. 



Ofvers. K. vet. akad. Forli., 1865, no. 4, p. 175; St. Joseph, Ann. sci. nat., 1897, ser. 5, 8, p. 285; 



Gravier, Nouv. arch. Mus. liist. nat., 1901, ser. 4, 3, p. 155. 

 Lipephile Malmgrkn, Annulata Polychaeta, 1867, p. 50. 

 Stratonice Malmgren, Op. cU., 1867, p. 56. 

 Hedyle Malmgren, Op. cit., 1867, p. 58 (epitokous form). 



Perinereis helleri Grube. 

 Plate 35, fig. 8. 



Nereis {Perinereis) helleri Grube, Annulata Semperiana, 1878, p. 81. 



This species has a close resemblance to P. cultrifera Grube occurring on the 

 coasts of Europe. The specimens represented in the present collection agree 

 essentially with Grube's description of the type of helleri, which is from the 

 Philippines, as far as it goes. 



The teeth of the maxillae are distally blunt or subacute, clearly less acute 

 than in cultrifera. The paragnatha in group V are three in number, conical, 

 arranged in a triangle. There is a single, lamelliform transverse tooth in VI. 

 In I are two small conical teeth, one behind the other. In II there is a group of 

 small conical teeth, few in number (seven to ten). In III there is a transverse 

 patch of about ten teeth, usually in three transverse rows, with on each side of 

 this patch and at some distance from it a characteristic group of two teeth 

 one behind the other. In IV there are fourteen or more teeth in a triangular 

 patch, with at its anterior apex often two teeth considerably smaller than the 

 others. 



The anterior eyes are decidedly farther apart than the posterior ones, in 

 this not agreeing with Grube's statement as to helleri. 



Localities. Paumotu Islands: Makcmo. Reef flat. 20 October, 1899. 

 Anterior ends of two specimens. 



Easter Island. Shore. 20 December, 1904. Several specimens. 



Pseudonereis Kinberg. 



Ofvers. K. vet. akad. Forh., 1865, no. 4, p. 174. 

 Paranereis Kinrerg, Op. cit., 1865, p. 175. 

 Naumachim Kinberg, Op. cU., 1865, p. 176. 



