NO. 3 HARTMAN : POLYCHAETOUS ANNELIDS 333 



The single specimen from Clipperton Island, which was reported 

 (Hartman, 1939, p. 19) as Idanthyrsus pennatus, has been re-examined 

 and compared with the type of L. nesiotes with which it agrees fully. 

 The type of Tetreres treadwelli Hoagland (USNM no. 18964) from 

 the Philippines includes a single specimen with several coarse tube frag- 

 ments, partly constructed of coral-shell fragments. The body proportions 

 are much as in L. nesiotes; here also the inner paleae are much thicker 

 than the outer, and the latter are curved inward near the tip but at an 

 angle that is less marked. The membrane bordering the outer row of 

 paleae is similarly serrated, the fringes number about 11 on side, but 

 they are somewhat longer than in the type of L. nesiotes. It seems that 

 the 2 are identical. 



Distribution. — Paumotu Islands; Philippines; Bonin, Marshall, and 

 Gilbert islands ; Clipperton Island ; Galapagos. Littoral. 



Lygdamis asteriformis (Augener) 

 PlateSl, Figs. 30-33 



Hermella varians Treadwell, 1902, p. 210, f^g. 81; 1906, p. 1180; not 



Webster, 1879. 

 Sabellaria (Pallasia) asteriformis Augener, 1906, pp. 167-171, pi. 7, figs. 



129-138. 

 Johansson, 1927, p. 86. 



Materials examined. — Type of Hermella varians, USNM no. 16246 

 from Puerto Rico; other specimens so labelled, from Hawaii. 



The following description is based on the type specimen of Hermella 

 varians, collected by the steamer Fish Hawk in Mayaguez Harbor, 

 Puerto Rico, Jan. 13, 1899. Opercular paleae are of 2 distinct kinds; the 

 outer row contains 25 to 30 pairs of broad, thin, spatulate ones (pi. 31, 

 fig. 30) overlapping one another at their lateral edges, forming a trim 

 flange about the operculum. The inner paleae number only 4 on a side, 

 are short, thick, taper to a blunt, spinelike tip, and are much darker than 

 those of the outer row; they are inserted near the median line of the 

 operculum, on the lower half of the crown. Nuchal hooks consist of a 

 single pair; they are large, flat, dark brown, their tips strongly curved, 

 their expanded basal portion with a sharp cutting edge. The membrane 

 surrounding the paleae on the outer side is bounded by about 20 closely 

 spaced, basally thick, long, tapering cirri. 



Palpi are very long, cylindrical but taper distally; they extend for- 

 ward beyond the opercular setae. The oral papillae are not numerous, 

 but form a longitudinal series along the free edge of the opercular base. 



