52 jiuirnal of Fntom!)l<)K\ :in»i Zoolog\ 



the stems is effective through the stems themselves and the pres- 

 ence of the ganglion is not necessary for these characteristic move- 

 ments. The conduction from one member of the colony to another 

 seems more evident than from the base or stem to the tentacle re- 

 gion, and vice versa. 



BIBLIOGR.JlPHY 

 Allman, G. J. 



1856. A Monograph of Fresh-water Polvzoa. Rav Soc. pp. 1-110. pi. 

 1-11, 15 text. figs. 



Assheton, R. 



1912. Loxosoma loxalina and Loxosoma sultans, two n^w species. Q. 

 Jour. Mic. sc. vol. 58 N. S. pp. 117-14,3, pi. 6-7, 4 text figs. 



Braem, F. 



1890. Untersuehungen uber die Brvozoen des sussen Wassers. Bib. 

 Zool., 1.34 p.. 38 figs., 15 pi. 



Busk, G. 



1886. Report on the Polyzoa collected by H. M. S. Challenger during the 

 years 1873-1876. Chal. Rep., vol. 17, pp. 1-47. 



Claparede, V.. 



1871. Beitrage zur anatomic und Entwicklungsgeschichte der Seebry- 

 ozoen. Zeit. f. wi.ss. Zool. vol. 21, pp. 137-172, pi. 8-10. 



Davenport, C. B. 



1?93. On unatella gracilis. Bull. Mus. (^onip. Zool. Vol. 21. pp. 1-44, 

 6 pi. 



Ehlers, E. 



1890. Zur Kenntniss der Pediceliinen. Abh. d. K<>n. Gcs. d. Wiss. zu 

 Gnttingen. Vol. 36, 200 p. 5 pi. 



Focttinger, A. 



1887. Sur TAnatomie des Pedicellines do la cote d'()sten<lo. .\rch. dc 

 Biol. vol. 7, pp. 299-329, pi. 10. 



Gerwerzhagen, A. 



1913. Beitrage zur kenntniss der Bryozoen, I, Das Nervensystem von Cris- 

 tatella mucedo Tav. Zeit. f. wiss. Zool. 107 Bd., pp. 309-345, pi. 12-14. 



Harmer, S. F. 



1885. On the .structure and dcvclopnicnt of I.nvnsoma. Q. .lour. .Mic. 

 Sc. vol. 25, pp. 261-337, pi. 1-3. 



1886. On the life-historv of Pedicellina. Q. .lour. Mic. Sc. vol. 27, pp. 

 2.39-263, pi. 21-22. 



Hatschek, B. 



1877. Embryonalentwickluiig und Knospung der Pedicellina echinata. 

 Zeit. f. wiss. Zool. Bd. 29, pp. .502-.561, pi. 27-30, 4 wood cuts. 



Hincks, T. 



A History of the British Marine Polyzoa. Vol. 1 and 2. London. 



Hyatt, A. 



1865-8. Observations on Polyzoa. Essex Inst. vol. 4, pp. 197-222; vol. 

 5. pp. 145-160. Vol. V, 1868, pp. 193-2.30, 21 text figs. 



