1913] 



Protostigmata in Ascidians. 



453 



Synoicidce. 



Amaroucmm. — The process is the same as for the last. 



I am indebted to the members of the Biological Board of Canada for 

 providing me with the facilities for collecting material at the Dominion 

 Pacific and Atlantic Stations. Nearly all my material was obtained at 

 those stations. 



LITERATURE REFERENCES. 



1904. Damas, D., "Contribution a l'Etude des Tuniciers," 'Arch, de Biol.,' vol. 20, 

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1909. Daumezon, G., " Contributions a l'Etude des Synascidies du Golfe de Marseille," 



' Bull. Scient. de la Fr. et Belg.,' vol. 42, p. 269. 

 1907. Feehner, P., "Beitriige zur Kenntnis der Kiemenspaltenbildung der Ascidien/' 



' Zeit. Wiss. Zool.,' vol. 86, p. 523. 



1892. Garstang, W., " On the Development of the Stigmata in Ascidians," ' Roy. Soc. 



Proc.,' vol. 51, p. 505. 



1904a. Julin, G, " Recherches sur la Phylogenese des Tuniciers. Developpement do 



l'Appareil branchial," ' Zeit. Wiss. Zool.,' vol. 74, p. 544. 

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 1890. Lahille, F., ' Recherches sur les Tuniciers des Cotes de France.' Toulouse. 

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Corella avec une note sur la Formation des Protostigmates chez Ciona et 



Ascidiella" ' Arch, de Biol.,' vol. 17, p. 673. 

 1901. De Selys Longchamp, M., et Damas, D., " Recherches sur le Developpement post- 



embryonnaire et l'Anatomie definitive de Molgula a-mpulloides" ' Arch, de 



Biol.,' vol. 17, p. 385. 



1893. Willey, A., " Studies on the Protochordata. I. — On the Origin of the Branchial 



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