92 DR. W. BAIRD ON THE GEPHYREA. [Feb. 13, 



to the foregoing (P. perlucens), that it was found burrowing like it 

 in holes in coral-rocks. 



11. Phascolosoma noduliferum. 



P/iascolosomum noduliferum, Stimpson, Proc. Acad. Philad. torn, 

 viii. p. .3/5, 1855 ; Diesing, Rev. der Rhyngod. I. c. p. 761, 1859. 



Phascolosoma noduliferum, Keferstein, Beitr. in I. c. p. 198, 18G5. 



Sipunculus (PhT/mosomum) nodulosus, Quatrefages, /. c. ii. p. 021. 

 no. 30, 1805. 



Sipuncidus (Pht/mosomum) nodidiferus, Quatrefages, /. c. ii. p. 624. 

 no. 42, 1865 *. 



Hab. Australiji, Sydney (J. M'Gillivrai/) ; Nicol Bay, north coast 

 of Australia (M. de Boulay) ; Australia (/. B. Jukes, Jisq.). B.M. 



12. Phascolosoma agassizii. 



Phascolosoma agassisii, Keferstein, Nnch. d. kiin. Gesellsch. der 

 Wissensch. in Gottingen, 1866 ; Zeitsch. fiir wissensch. Zool. Band 

 xvii. Heft i. p. 46, t. 6. f. 3-8, 1867. ^ . . 



Phascolosoma JIaivkinsii, Baird, MS. in jMus. Brit. 



Ilah. California and Panama {Arjassiz fide Keferstein) ; Esquinialt 

 Harbour, Vancouver Island (LieuL-Col. Ilaivkins). B.M. 



I had named this species after Lieut. -Col. Hawkins, H.INI. Coin- 

 niissioncr on the North-American Boundary Survey, Avho collected 

 the specimens, and to whom we are indebted for them. There are 

 two specimens, one much more slender than the other. This has 

 the exsertile portion protruded ; the other has it withdrawn, which 

 may account for the difference in circumference. 



13. Phascolosoma lordi, sp. uov. 



Corpus brevifusiforme, griseum, transverse rugosum, granuUs par- 

 vis fuscis obsitum, ad extremitalem posteriorcm coacervatis, ad 

 extremitalem anteriorem sparsis ; pars exseriilis cylindricu, bre~ 

 vis, rugibus circularibus circumdata. 



Long. Corp., 1 unc, part, exsert. 4 lin. 



Hab. Esnuimalt Harbour, Vancouver Island (</. A'. Lord, Esq.). 



B.I\I. 



The body of this animal is of a greyish colour, wrinkled across 

 with transverse rugse, or, as it were, corrugated. The skin is covered 

 with very small light-brown granules, which at the posterior extre- 

 mity are larger, darker-coloured, and more numerous, and at the 

 anterior extremity are very few and scattered at intervals. Tlie 

 exsertile portion is rather short, cylindrical in form, and rugose. 

 The tentacles ai'e withdrawn. "We have only one s])ecimen of this 

 species, which differs very much from the preceding in general 

 appearance, size, and colour, though collected at the same place. I 

 have named it after ]Mr. J. K. Lord, who was the naturalist attached 



""■ Quatrefages has, evidently in mistake, quoted this species t^Yice over, but 

 has, in the first instance, given it the name of nodulosus. The synonyms he has 

 quoted are the same in both instances. 



