Actiniae. 307 



PAPERS KEFERKEU TO. 



1. Caklgken, Oskar. — 'tjber das Vorkommen voii liruUiiuinen bei Aktinicn.' 

 (Vorliiufige Mitteilung.) Ofversvjt k. Veieuskaps Akad. Fork., lcS93, Stockholm. 



'1. Carlgren, Oskar. — ' Ergebnissc den Hamburger Magalliaensischen Sammel- 

 reise ; Zoantharien,' 1899. 



2a. Carlgren, Oskar. — ' Die Brutpflege der ActiaiarieH.' Biol. Gentralbl., XXI. 

 (1901), p. 468. 



3. Haddon, a. — ' Actiniaria of Torres Straits.' Trans. Roy. Dublin Sac, 

 Vr., Series 2 (1897). 



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

 (Russian), Mem. Roy. Soc. Friends of Nat. Sci., Anthrop. and Etlmog., Moscow, 

 1873. See Jahresb. Anat. u. Fhys., 187S. 



5. KwiETNiEWSKi, Casimir E. — ' Actiniaria von Ost-Spitzbergen,' Zoologische 

 Jahrbilcher, 1898, p. 121. 



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

 1867-71. 



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

 critical notes on other species.' II.-V., Anterican Journal of Science, VII. (1899 j, 



8. Wilson, E. P. — ■' The Development of Renilla.'' 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, 6, 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 coeleuteron. 



d directive mesenteries. 



ec ectoderm. 



em embryos. 



en endoderm. 



in. ec invaginated ectoderm. 



in. en invaginated endoderm. 



in. mg invaginated mesogloea. 



in. invagination opening. 



I. m longitudinal muscle. 



mes mesenteries. 



m.f. mesenterial filaments. 



mg mesogloea. 



m. I muscle lamellae. 



X 2 



