376 EDWARD S. MORSE ON 



Lang, Arnold. 



'96. Textbook of comparative anatomy. I'art2. London. Transl. by H. M. and M. Bernard. 



Lankester, K. R. 



'73. Summary of zoological observations made at Naples in I He winter of 1871-'72. Annals and mag. of nat. hist., 4th 



series, vol. 11, p. 81-1)7, fig. 1-3. 

 Macdonald, J. D. 



'61. On the physiology of the pallial .sinuses of the Bniehiopoda. Trans. Linn. sue. London, vol. 23, part 2, p. 373-375, 



pi. 35. 

 Morse, E. S. 



'70. The Brachiopoda, a division of Annelida. Ainer. journ. sci. and arts, 2d series, vol. 50, p. 100-104, fig. 1-3. 



'71. On tiie early stages of Turrbrutuliiul septenirionalis (Coulhouy). Mem. Boston soc. nat. hist., vol. 2, p. 2!)-39, pi. 

 1-2. 



'72. On the oviducts and embryology of Tcrebratnliiia. Amer. jonrn. sci. and art-s, 3d series, vol. 4, p. 262-203, pi. 3. 



'73a. Embryology of Terebratulina. Mem. Boston soc. nat. hist., vol. 2, p. 249-204, pi. 8-9. 



'73b. The systematic position of the Bracliiopmla. 1'roc. Boston soc. nat. hist., vol. 15, p. 315-372, pi. 1, fig. 1-42, 1-0. 



'78. On Japanese Lingula and shell mounds. Amer. journ. sei. and arts, 3d series, vol. 15, p. 150-157. 

 Owen, K. 



'35. On the anatomy of the Brachiopoda of Cuvier, etc. Trans, zool. soc. London, vol. 1, p. 145-104, pi. 22-23. 

 Schuchert, C. 



'93. A classification of the Bracliiopoda. Amer. geologist, vol. 11, p. 141-107, pi. 5. 



'97. A synopsis of American fossil Bracliiopoda including bibliography and synonymy. Bull. LI. S. geol. survey, no. 



87, 404 pp., 1 pi., iig. 1-0. 

 Schulgin, M. A. 



'84. Aryiope kowalevskii. (Ein beitrag zur kenntniss dcr bnichiopoden.) Zeitsehr. f. wissensch. zool., bd. 41, H. 1, p. 



116-141, pi. 8-0. 

 Semper, Carl. 



'62, '64. Ueber Lingula. Zeitschr. f. wissensch. zool., bd. 11, p. 100-104 ; bd. 14, p. 424. 

 Shipley, A. E. 



'83. On the structure and development of Argiope. Mittheil. zool. sta. Neapel, bd. 4, p. 492-520, pi. 39-40. 

 Sollas, J. W. 



'86-'87. The "coecal processes" of the shells of brachiopods interpreted as sense organs. Scientific proc. royal Dublin 



soc., new series, vol. 5, p. 318-320, 1 fig. 

 Vogt, Carl. 



'45. Anatomic der Lingula anatina. Nouv. mem. soc. Helvet. sci. nat., t. 7, 2 pis. 

 Williams, T. 



'51. Report on the British Annelida. Report British ass'n for the advancement of science, p. 159-272. 



EXPLANATION OF PLATES. 

 ABBREVIATIONS USED. 



a. anus. b. brachia. 



a. b. 1. anterior branch of lateral sinus. b. f. brachial fold. 



a. cl. anterior cluster of setae. b. g. brachial groove. 



a. f. anterior folds of pallium. b. g. in. brachial groove muscles. 



a. h. accessory "hearts of Hancock." b. 1. border lip of pallium. 



ap. aponeurosis of muscle of main pallial sinus opening. b. p. border of pallium. 



a. p. s. anterior pallial sinus. b. s. brachial sinus. 



az. azygos process. c. collar. 



