EURYTHOE. 27 



Amphinoma Blainville, Diet. sci. nat., 1828, 57, p. 450; Audouin & Milne Edwards, Hist. nat. litt. 



France. Annelidcs, 1831, 2, p. 121. 

 Linopherus Quatrefages, Hist. nat. anneles, 1865, 1, p. 392. 

 Leiiora Geube, Annulata Semperiana, 1878, p. 2. 



Amphinome vagans (Savigny). 



Pleione vagans Savigny, Descript. Egypte. Hist, nat., 1809 [ = 1822], 1, pt. 3, p. 60. 



Amphinoma vagans Bl.unville, Diet. sci. nat., 1828, 67, p. 451; Audouin & Milne Edwards, Hist. 



nat. litt. France. Annelides, 1834, 2, p. 122. 

 Amplmiome vagans Grube, Arehiv. naturg., 1850, 1, p. 289; Kinberg, Of vers. K. vet. akad. Forh., 



1857, 14, p. 12; Quatrefages, Hist. nat. anneles, 1865, p. 403; Baird, Journ. Linn. soc. London. 



ZooL, 1870, 19, p. 218; McIntosh, Challenger Annelida, 1885, p. 24; Horst, Notes Leyden mus., 



1886, 8, no. 3, p. 159; Kinberg, Fregatt. Eugenies Resa. Zool. Annulater, 1910, p. 34, pi. 11. 



fig. 6. 

 Pleione tetraedra Milne Edwards (nee Savigny), Regne anim. illust. Annelides, 1849, pi. 8, fig. 1, la. 

 Amphinome rostrata Kinberg (nee Pallas), Ofvers. K. vet. akad. Forh., 1857, 14, p. 12; McIntosh, 



ChaUenger Annelida, 1885, p. 21, pi. lA, fig. 16, pi. 2A, fig. 8-12; Andrews, Proe. U. S. N. M., 1891, 



14, p. 278; IzuKA, Journ. Coll. sci. Imper. univ. Tokyo, 1912, 30, p. 226, pi. 1, fig. 2, pi. 22, fig. 6-9. 

 Amphinome pallasii Quatrefages, Hist. nat. anneles, 1865, p. 394; Baird, Journ. Linn. soc. London. 



Zool., 1870, 19, p. 218; Ehlers, Mem. M. C. Z., 1887, 15, p. 26, pi. 1, fig. 4; Moore, Proc. Acad. 



nat. sci. Philad., 1903, p. 793; Fauvel, R6su1. campag. sci. Prince Monaco, 1914, 46, p. 85. 



Localities. Off Marquesas Islands. Sta. 3686 (lat. 12° 20' S; long. 144° 

 15' W.). Surface temp., 79° F. 19 September, 1899. One specimen 22 mm. 

 long taken on barnacles diifting at surface. 



Off Acapulco Light House, Mexico. Sta. 4596 (lat. 16° 48' N., long. 100° 

 27' W.). Surface temp., 84° F. 14 October, 1904. Six immature specimens 

 ranging in size from only 2.5 mm. to 8.5 nmi. were taken from driftwood. 



This species has often been taken similarly from driftwood elsewhere in 

 the Pacific as well as in the Atlantic. The specimens recorded agree in details 

 of structure of the setae and other parts with specimens from the Atlantic 

 excepting, in the case of those from the second locality, in slight points such as 

 the difference in size and form of the knob on the shortest setae, differences 

 possibly due to immaturity. The largest of the specimens from Sta. 4596 has 

 twenty-five somites, the smallest seventeen, the most caudal of these being 

 short and closely crowded. 



The forms that have usually been referred to A. vagans seem without doubt 

 to be partly grown specimens of the same species known as A. pallasii and, in 

 part, as A. rostrata. The true rostrata is a species occurring in the Indian Ocean 

 and differing from the Atlantic and Pacific form that has been Usted under 

 that name; vagans has priority over pallasii. 



EuRYTHOE Kinberg. 



Ofvers. K. vet. akad. Forh., 1857, 14, p. 13. 



