332 PROCEEDINGS OP THE ACADEMY OF [June, 



Fort Rupert agrees exactly with the description given by Johnson ; the 

 other two have the cephahc appendages and the dorsal cirri longer and 

 more slender, the eyes farther back, and the neuropodial setse more 

 slender. All of them exhibit marked asymmetry in the arrangement 

 of the elytra. 



Fort Rupert, shore of Union Bay, Vancouver Island, B. C, and Sta- 

 tions 4193, Halibut Bank, Gulf of Georgia, B. C, 18-23 fathoms, green 

 naud and fine sand; 4197, same locality, 31-90 fathoms, sticky green 

 mud and fine sand. 



Polynoe fragilis (Baird) Johnson. 



Lepidonotus fragilis Baird, Proc. Zool. Soc. Lon., 1863, p. 108. 



Polynoe fragilis, Johnson, Proc. Cal. Acad., Vol. I, Zoology, pp. 179-181. 



Three complete examples from near Port Townsend alone represent 

 this most interesting commensalistic species. The margins of the 

 elytra are frequently more complexly folded than is indicated by 

 Johnson. Dr. Heath's label states that the color in life is ''entire 

 surface of body light yellow, the elytra allowing the color of the body, 

 to show through." It is stated that the specimens Avere taken from 

 Asterias sp. The resemblance of these worms to the arms of the star- 

 fish is most remarkable and is a subject well worth careful and detailed 

 study by someone on the ground. 



Station 4222, Admiralty Inlet, vicinity of Port Townsend, Washing- 

 ton, 39 fathoms, gray sand and broken shells. 



Hermadion trunoata Moore. 



Harmathoe fruncata Moore, Proc. Acad. Nat. Sci. Phila., 1902, pp. 272-274, 

 PL XIV, figs. 21-28. 



This species was originally described from the anterior end of a 

 specimen in the collection of the Academy of Natural Sciences of 

 Philadelphia, at that time supposed to have been collected in Green- 

 land, but now believed to have been taken by Dr. Benjamin Sharp at 

 Icy Cape, Alaska. It is well represented in this collection from the 

 more southern stations. The completeness of some of the examples 

 permits the addition of the following notes to the original description. 

 A length of 80 mm. is attained, the posterior region of the body being 

 slender and tapering. There are 63 segments with 15 pairs of elytra, 

 borne on segments II, IV, V, VII, IX, XI, XIII, XV, XVII, XIX, 

 XXI, XXIII, XXVI, XXIX and XXXII, and leaving the posterior 

 part of the body unprotected except by the bristling setse. The 

 cephalic peaks are rudimentary, being coalesced with the bases of the 

 lateral tentacles, and the anterior eyes are farther forward than in the 

 type. The style of the median tentacle is slender, about twice the 



