THE ANATOMY OF PHORONIS AUSTRALIS. 153 
12. Hasweit, —.—“ Preliminary Note on an Australian Species of Phoro- 
nis,’ ‘Trans. Linn. Soc. N.S. W.,’ vii, p. 606. 
13. Harscuex, B.—‘ Ueber Entwicklung von Sipunculus nudus,” ‘ Arb. aus 
d. Zool. Inst. Wien,’ v, 1884, pp. 61—134. 
14. Koren & DanreLitsen.—‘ Fauna littoralis norvegiz,’ Bergen, 1877, pp. 
120—128. 
15. Kowateysky, A.—‘‘ Anatomy and Development of Phoronis,’ 1867 (in 
Russian), Abstract in ‘Arch. f. Naturgesch.,’ 1866-67, Bd. ii, pp. 
236—238. : 
16. Kroun, A.—“ Ueber Pilidium und Actinotrocha,”’ ‘ Miiller’s Archiv,’ 
1858, p. 293. 
17. Lanxester, E. R.—* Polyzoa,” ‘Encyclopedia Britannica.’ 
18. McIytosH, —.—*“* Notes on Phoronis Dredged by H.MLS. ‘“‘Challenger,” ” 
‘Proc. Roy. Soc. EHdin.,’ xi, 1881, p. 211. 
19. McIntosH, W. C.—‘*Phoronis Buskii,” ‘“Challenger” Reports,’ 
vol. xxviii, 1888. 
20. Morsz, EH. S.—‘‘ Embryology of Terebratulina,’ ‘Mem. Boston Soc. 
Nat. Hist.,’ ii. 
21. Miitier, Jon.— Ueber Verschiedene Formen von Seethiere,” ‘ Mil- 
ler’s Arch.,’ 1854, p. 84. 
22. Scunerper, A.—“ Ueber die Metamorphose d. Actinotrocha bran- 
chiata,” ‘ Miiller’s Arch,’ 1862, p. 49. 
24. Suiptny, A. H.—‘‘On the Structure and Development of Argiope,” 
‘Mith, Zool. St. Neap.,’ iv, 1888, pp. 494—577. 
25, SrreTHitt Wricut, Tu.—* Description of two Tubicolous Animals,” 
‘Proc. Roy. Phys. Soc. Hdin.,’ i, 1856, p. 165; and ‘ Edinb. New 
Phil. Journ.,’ iv, 1856, p. 318. 
EXPLANATION OF PLATES X, XI, XII, & XIII, 
Illustrating Dr. Wm. Blaxland Benham’s paper on “ The 
Anatomy of Phoronis australis.” 
Fie, 1.—View of Phoronis australis. Natural size, seen from the 
anal side. 
Fic. 2.—View of the oral or tentacular extremity, from the oral side. 
Natural size. 
Fic. 3.—Surface of a portion of the body wall, viewed under a lens, showing 
circular ridges. 
