Actiniae. 307 



PAPEKS EEFEPtPED TO. 



1. Carlgren, Oskar. — ' Uber das Vorkommen von Rrutriiumen bei Aktinien.' 

 (VorlJiufige Mitteilung.) Ofversigt k. Vetenskaps Akad. Fork., 18Uo, Stockholm. 



2. Carlgren, Oskar. — ■' Ergebnisse den Hamburger Magalhaensischen Samniel- 

 reise ; Zoantharien,' 1899. 



2a. Carlgren, Oskar. — •' Die Brutpflege der Actiniarien.' Biol. CentralbL, XXI. 

 (1901), p. 468. 



3. Haddon, a. — 'Actiniaria of Torres Straits.' Trans. Boi/. BiMin Soc, 

 VI., Series 2 (1897). 



4. KowALEVSKY, A. — ' Investigations on the development of Invertebrates ' 

 (Russian), Mem. Roy. Soc. Friends of Nat. Sci., Anfhrop. and Ethnog., Moscow, 

 1873. See Jahresb. Anat. u. Phys., 1873. 



5. KwiETNiEwsKi, Casimir I\. — ' Actiniaria von Ost-Spitzbergen,' Zoologische 

 Jahrbiiclier, 1898, p. 121. 



(). Verrill, a. E. — 'Notes on Radiata.' Trans. Go7in. Acad., I., pp. 328 and 492, 

 1807-71. 



7. Verrill, A. E. — ' Descriptions of imperfectly known and new Actinians, with 

 critical notes on other species.' Il.-V., American Journal of Science, VII. (1899^. 



8. Wilson, E. B. — ' The Development of Eenilla.^ Phil. Trans., London, 

 CLXXIV. (1883). 



9. Wyville Thomson, Sir C— ' The Voyage of the ''Challenger," ' 1877. 



EXPLANATION OF PLATES. 



With the exception of figs. 1, G, 18 and 19, which are represented 

 natural size, and the diagrammatic drawing (fig. 8), all the figures 

 have been drawn from sections as seen under Swift's 1-in. obj., 

 No. 2 eye-piece, slightly enlarged. The sections were made by the 

 Cambridge rocking microtome, from tissues stained in picrocarmine, 

 embedded in the usual way, and mounted in Canada balsam. 



LIST OF ABBREVIATIONS. 



h. c brood chamber. 



c coelenteron. 



d directive mesenteries. 



ec ectoderm. 



em embryos. t 



en endoderm. 



in. ec invaginated ectoderm. 



in. en invaginated endoderm. 



in. mg invaginated mesoglo-a. 



in. invagination opening. 



I. m longitudinal muscle. 



uies mesenteries. 



m. f. mesenterial filaments. 



lug mesoglcea. 



m. I muscle lamellae. 



X 2 



