1843. 



Eteone pus r i 



1851. 



■>■> ) 



1865. 



■>•> ) 



■>•> 



Eulalia , 



}) 



Eteone „ 



1867. 



■>•) ) 



1874. 



y> j 



1879. 



j) i 



1890. 



)) } 



1896. 



>; ) 



ETEONE PUSILLA. 107 



rhomboidal. Setigerous process slightly bifid. The terminal dilatations of the shafts of 

 the bristles have a long curved spine and several smaller ones on each side. The distal blade 

 is of moderate length, broad and slightly bulged inferiorly, and tapering somewhat 

 abruptly to a fine point. The edge is minutely serrated. Ventral cirrus irregularly 

 ovate, and more or less pointed posteriorly. 



Synonyms. 



CErsted. Consp. Annul., p. 30, f. 84. 



Grube. Fam. Annel., pp. 57, 130. 



Malmgren. Nord. Hafs-Annul., p. 102, Tab. xv, f. 37. 



De Quatrefages. Annel., ii, p. 122 (?). 



idem. Ibid., ii, p. 151. 



Malmgren. Annul. Polych., p. 26. 



Malm. Op. cit., G-oteb., p. 81. 



Verrill. Check List, U. S. Comm. F. and F., (sep. copy) p. 8. 



Giard. Bull. Sc. Fr. Belg., t. xxii, p. 77. 



Michaelsen. Polych. deutsch. meere, p. 37. 



Habitat. — Dredged in 100 fathoms, St. Magnus Bay, Shetland, 1867 (Dr. Gwyn 

 Jeffreys) . 



Canadian and American coasts. 



Head (Plate LXV, fig. 6) spathulate, forming a somewhat elongated blunt cone, with 

 the short subulate tentacles at each side anteriorly and separated antero-posteriorly from 

 each other. The eyes in the preparation are invisible, or only a faint trace of one remains. 

 The tentacular cirri are also short and subulate, being little more than half the diameter 

 of the post-cephalic segment. 



Body about two inches or more in length, nearly equally narrowed anteriorly and 

 posteriorly, though the tip of the tail is the more attenuate. It is rounded dorsally, 

 flattened ventrally, the latter surface having a median groove anteriorly. The anal cirri 

 are absent, but, according to Malmgren, they are elongate linear-fusiform. 



The foot (Plate LXIX, fig. 7) bears an obliquely ovate cirrus, which at the tenth foot 

 is more or less sessile, that is, its pedicle or ceratophore is shorter. The lamella, which 

 has its greatest diameter external and the lower edge dependent, thus touches the 

 setigerous process, whereas the longer pedicle, e. g. from the thirtieth to the seventieth 

 foot, carries it further outward, a feature still more marked at the hundredth foot. The 

 lamella in the latter has also become somewhat rhomboidal, the long dorsal and ventral 

 edges being straight, the outer and inner rounded. From the thirtieth to the seventieth 

 foot the process projects considerably beyond the tip of the setigerous region, but this 

 condition is less marked at the hundredth foot, probably from the elongation of the 

 latter. The setigerous process is somewhat bifid, and it has a series of slightly curved 

 bristles (Plate LXXVII, fig. 17), the ends of the shafts being enlarged and furnished 

 with a long curved spine and several smaller ones on each side. The distal blade is of 

 moderate length, broad and somewhat bulged inferiorly, and tapered rather abruptly 

 to a fine extremity. The edge is minutely serrated. The inferior cirrus is also irregularly 

 ovate at the tenth foot, with a tendency to a point at the tip, which, with that of the 



