106 University of California Publications. | ZOOLOGY 
Metcalf, M. M. 
1893. On the Eyes and Subneural Gland of Salpa. Supplement to The 
Genus Salpa, by Brooks. In addition to the most detailed 
study of the organs treated yet published, bearings of the 
results on question of relationships of the species considered. 
1900. Notes on the Morphology of the Tunicata. Zool. Jahrb., Bd. 
XIII, pp. 495-602. Numerous anatomical observations, par- 
ticularly on the brain, subneural gland, and associated parts 
in many species of the class, including several Salpae; struc- 
ture and affinities of Octacnemus patagoniensis. 
Panceri, Paolo. 
1872. Gli organi luminosi e la luce dei Pirosomi e delle Foladi. Atti 
della R. Acad. della Scienze fisiche e mathematiche de 
Napoli, Vol. V, No. 13, p.51, Pls. 3. In addition to first 
recognition of the function of the light producing organs, 
various observations on anatomy and embryology. Most 
of the observations on P. giganteum. 
Peron, M. 
1804. Mémoire sur le nouveau genre Pyrosoma. Annals du Muséum 
d’hist. natur, T. IV, p. 437, Pl. 72. Pyrosoma atlanticum 
described. 
Perrier, Edmond. 
1899. Traité de Zodlogie. Tasc. V, Amphioxus-Tuniciers. 
Quoy et Gaimard. 
1834. Voyage de découvertes de 1’Astrolabe. Zodlogie, t. III, pp. 559- 
602, Pls. 86-89. Many species of Salpa and Doliolum elab- 
orately, but in many instances not accurately, illustrated; 
many of the figures not identifiable. 
Salensky, W. 
Beitrige zur Embryonalentwicklung der Pyrosomen. Zodl. 
Jahrb. (Abth. f. Anat. u. Entw.), Bd. V, Hft. 1, pp. 1-98. 
This, along with Salensky’s numerous other papers on the 
development not only of Pyrosoma, but also of Salpa and 
compound ascidians, indispensable to students of the devel- 
opment of these groups. 
Savigny, Jules-César. 
1816. Mémoires sur les Animaux sans Vertébres. 2d partie, Ist fasc., 
p- 124, Pl. XXIV. S. octofora and S. cylindrica examined 
and figured. Affinity of Salpa to ascidians confirmed. 
Seeliger, O. 
1889. Ueber den Generationswechsel der Salpen. Jena Zeitschr. f. 
Naturwiss, Bd. 22, Hft. 3, pp. 399-414. In this and various 
other important papers by this author, affinities of all the 
kinds of tunicates discussed, particularly from the develop- 
mental point of view. 
