158 A REPORT ON THE SIPUNCULOIDEA, COLLECTED BY DR WILLEY 



Islands retained their light straw colour, and the circular muscles do not show any 

 sign of division into bundles, nevertheless I think the two sets of specimens belong to 

 the same species. 



This is the species eaten by the Chinese. 



20. Sipunculus mundanus Sel. and Biilow. (VIII.) 



Four specimens from Pigeon Island, New Britain. 



The single specimen dredged on the Sow and Pigs Bank, in the British Museum, 

 from which Selenka and Biilow established the species was 33 — 34 cms. long. Dr 

 Willey's specimens were much shorter, the longest alone attaining a length of 10 cm. 

 As the only specimen opened showed no trace of reproductive organs, it is probable 

 that they are all young forms. 



21. Sipunculus nudus L. 



Two specimens from Blanche Bay. The posterior end of one of them had been 



seized by a small bivalve which had been partly dragged into the cavity formed by 



the introversion of this part of the body. This species is practically cosmopolitan, 



Selenka records it from the North Sea, English Channel, Mediterranean, Zamboango, 

 Malacca, the West Indies and Florida. 



22. Sipunculus priapuloides, Kor. and Dan. (V.) 



One specimen from Lifu, Loyalty Islands. 



This specimen agreed very well with the description of the species given by Koren 

 and Danielssen, the portion of the body from which the specific name is taken is 

 however not so prominent as in the figure of the animal given by the Norwegian 

 artists. There is however a clear change in the external appearance of the skin at 

 the posterior end. The specimen which had been two years in spirit was of an 

 iridescent gray colour. Koren and Danielssen's specimens came from Korsfjord near 

 Bergen and from S^ndfjord, so that this species has a remarkable range. 



23. Sipunculus vastus Sel. and Biilow. (VIII.) 



Four specimens from Pigeon Island, New Britain ; numerous specimens from Lifu, 

 Loyalty Islands, and two from the Isle of Pines, New Caledonia. 



This species was found by Mr Stanley Gardiner at both Roturna and Funafuti 

 and seem common. Selenka records it from the Marshall group of Islands. The Lifu 

 examples were much darker in colour and more opaque than those from New Britain 

 and from New Caledonia : in fact like the most nearly allied of its fellow species, 

 S. cumanensis, it may be divided into at least two varieties, S. vastus albus which 

 is a pearly white and fairly translucent and S. vastus obscurus which is a dark purplish 

 brown and quite opaque. 



The Zoological Laboratory, Cambridge. 

 August, 1898. 



