)(J 



much more richly tnitccl than the original one. They agree, 

 however, in all essential characters with the type-specimen. 

 They are somewhat larger, the body of the most complete 

 measuring 28 mm. in length (exclusive of the appendages) and 

 of similar breadth to that procured by the "Challenger." 



No scales existed on any of the examples (three), so that they 

 would seem to be very slightly attached. Whether the delicate 

 scale with a group of small papillae — in the bottle beside the 

 specimens — pertained to this form is unknown. The caudal 

 cirri were likewise absent, the bristles of the last pair of feet 

 being directed backward and greatly diminished in length. 



In the description of the specimen from the " Challenger " * 

 it is stated tiiat the dorsal surface of the partially extended 

 proboscis shows two papilhe, one beneath each flattened frontal 

 lobe, but such probably refers to the two marked lateral fillets, 

 which when the organ is fully extended occur opposite the gap 

 between the dorsal and ventral series of terminal papilla;. The 

 basal region is somewhat constricted and minutely corrugated 

 and divided by a furrow into two fillets. Beyond the latter the 

 organ dilates and forms a dorsal and a ventral crescent, whilst 

 the lateral region passes forwards as a peak. The dorsal and 

 ventral series of papilla; at the tip of the organ in extension are 

 9 in number, and they readily fall off in the preparations. The 

 horny jaws follow the ordinary arrangement, the right of the 

 dorsal pair passing between the ventral. 



In the structure of the feet and of the bristles — both dorsal 

 and ventral — they agree with the example from New Zealand. 

 Opposite the base of each foot is a deep dimple causing the foot 

 from the dorsal surface to have a bilobed base. Attached to 

 the tip of one or two segmental papillae — by a stalk from the 

 lumen — were little whitish masses of sperms — all the specimens 

 apparently being males. It comes to be a question as to 

 whether such a type is not more or less pelagic at this period, 

 a feature perhaps not unconnected with its wide distribution. 

 The alimentary canal posteriorly formed a small empty tube, 

 the bodv-cavity being filled with masses of sperms. 



The OligoU'pis viohucci of Levinsen, from the Kara Sea, 

 published the following year (i886j appears to be the same 

 form.f 



POLYEUXOA L.'EVIS, MclntOsh, 1885. 



188^. Polxcinioa Ln'vis, Mcintosh, Ann. "Challenger," p. 76, 

 ^Pl. xii., fig. 2, and PI. XX., fig. 8. 



A single example devoid of scales was obtained in the trawl 

 by Dr. Gilchrist in 470 fathoms, 25 miles off Cape Point Light- 



* Op. cit. p. 122. f Kani-Havets Ledoniie, Kjohenhavn, 1886. 



