NO. 3 POLYCHAETOUS ANNELIDS 13 



resemble those farther back. A typical parapodium has a slender fascicle 

 of penicillate setae above, about 6 heavy, aristate setae, and a full fascicle 

 of spinous, geniculate setae below. Notosetae are fine, few in number, 

 inconspicuous throughout. Notopodia are sheaflike, at the anterior base 

 of neuropodia ; the latter are deep, truncate. 



Digitiform branchiae are first present from the ninth setiger, gradu- 

 ally increase in length but continue as simple processes to the end of the 

 piece. 



Family Sigalionidae 



Eusigalion lewisii (Berkeley) 



Sigalion lewisii Berkeley, 1939, pp. 326-328, fig. 23. 



E. hancocki Hartman, 1939, pp. 59-60, pi. 12, figs. 141-145, 148-152. 



Collection.— A 2A-'i9 (1). 



A single specimen agrees fully with others from, the eastern tropical 

 Pacific. 



Distribution. — Eastern Pacific, in warm waters; Venezuela. 



Leanira grubei (Tread well) 



Sthenelais ffrubeiTreadwell, 1902, p. 187, figs. 10-13. 

 Eupholoe grubei TrtzAwtW, 1939, p. 197. 

 Hartman, 1942, pp. 106-107. 



Collections.— A 7-39 ( 1 ) ; A 38-39 (2). 



Composite setae are tapering, pointed, lack canaliculae. The type spec- 

 imen has been re-examined and referred to Leanira (Hartman, 1942, p. 

 106). 



Distribution. — Puerto Rico; Tobago Island, British West Indies; 

 Caledonia Bay, Panama. 



Leanira incisa (Grube) 

 PI. 1, Figs. 1-4; PI. 2, Figs. 9-11 



Sthenelais incisa Grube, 1878, pp. 518-520. 



Sthenelais simplex Ehlers, 1887, pp. 60-63, pi. 13, figs. 2, 3, pi. 14, figs. 



l-6;Treadwell, 1902, p. 187. 

 L. simplex Augener, 1906, pp. 106-107, pi. 1, figs. 16, 17. 

 Augener, 1918, pp. 107-108; Monro, 1930, p. 70. 



Collection.— A 4-39 (1). 



In this single specimen the prostomium has 4 circular eyespots, on the 

 anterior half, near the base of the median ceratophore (pi. 2, fig. 10) , thus 

 differing from the original accounts. The m.edian antenna has a pair of 

 lateral ctenidia, as first shown by Ehlers (1887, pi. 13, fig. 2). The first 



