252 bulletin: museum of compaeative zoology. 



LITERATURE. 



Herdman, W. A. 



'82. E-eport ou the Tuuicata, Part I. The Voyage of H. M. S. " Challenger," 



Zoology, Yol. VI. 

 '88. Ibid., Part III, Vol. XXVII. 

 '91. A revised classification of the Tunicata, etc. Liuueau Society's 



Journal, Zoology, Vol. XXIII. 



Metcalf, H. M. 



'93. Notes upon an apparently new species of Octacnemus, etc. Jolius 



Hopkins Univ. Circ, No. 106. 

 :00. The anatomy of Octaoiemus patagonie7isis. Notes on the morphology 



of the Tunicata. Zoolog. Jalirbuch, Abth. f. Anat. uud Outogonie der 



Thiere, Bd. XIII, p. 572 and p. 519. 



Moseley, H. N. 



'76. Ou two new forms of deep-sea ascidians, obtained during the voyage 

 of H. M. S. " Challenger." Trans. Linn. Soc. London, ser. 2 (Zool.) 

 Vol. IIL p. 287. 



Ritter, Wm. E. 



:01. Papers from the Harriman Alaska Expedition, XXIII. The ascidians. 

 Proc Washington Acad. Sciences, Vol. Ill, p. 225, 



