TYPE PUOSOPTOIA. 275 



LITERATURE. 



POLYZOA. 



G J. AUman. A Monograph of the Fresh-water Polyzoa. London, 1856. 



T. Hincks. A History of the British Marine Polyzoa. London, 1880. 



H. Nitsche. Beitrcige zur Kenntniss der Bryozoen. Zeitsclir. fiir -wissenscli. 



Zoologie, XX, 1869 ; xxi, 1871 ; xxv, Suppl., 1875. 

 A. Hyatt. Observations on Polyzoa. Suborder Phylactolceinata. Proceedings 



Essex Institute, IV and v, 1866-68. 

 S. F. Harmer. On the Structure and Development of Loxosoma. Quarterly 



Journ. Microscop. Science, xxv, 1885. 

 C. B. Davenport. Papers in Bulletin of the Museum of Comp. Zoology, XX, 



1890 ; XXII, 1891 ; and xxiv, 1893. 



BEACHIOPODA. 



E. S. Morse. On the Systematic Position of the Brachiopoda. Proceed. Boston 



Soc. Nat. History, xv, 1893. 



W. K. Brooks. The Development of Lingula. The Chesapeake Zoolog. Labo- 

 ratory. Scient. Results of the Session of 1878. 



J. F. van Bemmelen. Untersuchungen iiber den anatomischen und histologischen 

 Bau der Brachiopoda testica/rdinia. Jeuaische Zeitschr., xvr, 1883. 



M. A. Schulgin. Argiope Kowalewskii. Bin Beitrag zur Kenntniss der Brachio- 

 poden. Zeitschr. filr wissensch. Zoologie, XLi, 1884. 



H. G. Beyer. A Study of the Structure of Lingula (Qlottidia) pyramidata. 

 Studies from the Biolog. Labor. Johns Hopkins University, III, 1886. 



F. Blochmann. Untersuchungen iiber den Bau der Brachiopoden. Jena, 1893. 



