1909.] NATURAL SCIENCES OF PHILADELPHIA. 243 



HESIONIDiB. 



Podarke pugettensis Johnson. 



Podarke pugette7isis Johnson, Proc. Bos. Soc. Nat. Hist., XXIX (1901), 

 pp. 397, 398; PI. 3, figs. 23-25. 



About fifty specimens collected at San Diego are stated to have 

 been "parasitic on starfish." 



The occurrence of this species on a starfish (Luidia) in the vicinity 

 of Port Townsend has been already reported in these Proceedings for 

 1908 and it seems probable that this habit is general. The reference 

 by Harrington and Griffin in their paper on Puget Sound Inverte- 

 brates to "the curious Ophiodromvs, an annelid that lives between 

 the arms of the starfish [Asterias] and is colored so as to resemble the 

 surface of the latter," probably relates to this species. 



The appendages of some of the dorsalmost setae of the subacicular 

 fascicle and the ventralmost of the supra-acicular fascicle are much 

 longer and more slender than the others. 



NEPHTHYDIDJE. 

 Nephthys caeca ( Fabricius) Oersted. 



Nereis coeca, Fabricius, Fauna Groenlandica, 17S0, p. 304. 



This species is represented by six large specimens from the vicinity 

 of Monterey Bay and by about twenty from San Diego, where it appears 

 to be common and was taken from the littoral zone and down to a 

 depth of fifty feet. 



The San Diego examples are of small to medium size and colorless 

 or slightly marked with brown figures and bands on the prostomium 

 and a feAv anterior segments. The setae of some specimens are long, 

 of others short and one of the latter is filled with nearly mature ova. 



Those from Monterey Bay are much larger, measuring about ISO 

 mm. in length and one counted having 152 segments. Three of them 

 are very smooth and colorless, except that there is a brown or black 

 "spread-eagle" figure on the prostomium and crossbars on a few an- 

 terior segments. The others have the body of a deep purplish brown 

 both dorsally and ventrally, the parapodia colorless. 



The free margins of the prostomium are thin and produced. The 

 serrated setae form long flowing tufts, dusky at the base, as long as 

 the parapodia or nearly equal to the body width. The annulated 

 setae are short and small, except on anterior parapodia. Several 

 specimens have the single caudal cirrus intact. 



The extended proboscis is rather slender clavate with ten bifid 

 orifical papillae above and ten below and twenty-two longitudinal 



