ZOANTHARIA 



J 5 



enteries are also weak and only project very little into the coelenteron. The filaments have the usual 

 structure. So far as I can see, the nematocysts of the same kind and size as in the body-wall are 

 scarce. The same is the case with the thick-walled capsules which are very narrow, often curved 

 and not much thickened (length 34—36 u). 



Sexual organs. Eggs at different stages of development are found in the single specimen 

 examined by me. 



The carcincecium. The inner wall of the carcinceciuni is bounded externally by a fairly thick 

 cuticle. Under this lies a continuous ectoderm with numerous nematocyst capsules of the same kind 

 as in the body-wall of the polyps. On the outer side of the carcincecium the ectoderm was for the 

 most part removed. The mesoglcea on both sides of the entodermal canal-system is fairly thick and 

 almost equally developed on both sides. The entodermal canal-system (text-fig. 2, p. 13) forms large 

 lacunae separated by very narrow bridges of connective tissue, by means of which the two layers of 

 the mesoglcea are easily separated from each other. In the single specimen I had for examination I 

 found no canal in the margin of the carcinceciuni that differed in size from the other parts of the 

 canal-system (text-fig. 2). Thus, the entodermal canal-system seems to be more developed than in 

 E. incrustatus; I have said, seems to be, for I have only examined the ventral margin of the carcinceciuni 

 a little way inwards. The difference in the development of the canal-system is seen most distinctly 

 on comparing E. abyssorum with E. paguripliiliis. The inner as well as the outer parts of the carci- 

 ncecium are richly incrusted with foraminifera. 



Remarks. The claster of this species arising from a grain of sand (PI. 6, fig. 27a Verrill 1885b) 

 is probably another species. I have no knowledge of this form. 



Epizoanthus paguriphilus Verr. 



PL i, fig. 8. 



Epizoanthus paguriphilus n. sp. Verrill 1882 Americ. Journ. (3) 23 p. 137, 316. 



Verrill, Verrill 1883 Report Anth. Bull. M. Comp. Zool. Cambridge 



p. 61, PI. 8, fig. 5. 

 Zoantlnis (Corticant/ms) paguriphilus Verr. Andres 1883 le Attinie p. 541. 

 Epizoanthus paguriphilus Verr. Haddon & Shackleton 1891, p. 641, PI. 58, figs. 23 — 25, PL 59, 



fig. 6, PI. 60, fig. 5 (contains index of literature up to 1891). 

 Epizoanthus hirondellei 11. sp. Jourdan Bull. Soc. zool. France. Vol. 16 p. 269. 1891. 



— Jourdan. Jourdan Res. Camp. Albert I. Monaco Fase. 8. p. 7 Tab. 1. figs. 3 — 5. 1895. 



Occurrence: 6i°44' N., 27 W. 485 Danish fathoms; bottom-temp. 6i°. Ingolf-Exp. St. 81, 2 sp. 

 6i°28'N., 26°25'W. 780 Danish fathoms; bottom-temp. 4-3°. Ingolf-Exp. St. 75, 1 sp. 

 6o° 7' N., 9° 33' W. 750 m. Michael Sars Exp. 14-8. 1902. St. 79 b. Bergen Museum. 

 59° 28' N., 8° W. 1100 — 1300111. temperature at 1000 m. 8-07°. Michael Sars Exp. 12-8. 1902. St 76. 

 Geographical distribution. North Atlantic N. E. coast of America to N. W. Europe in 

 deep water (H. & S.), Azores J. Roule. 



Dimensions: The largest carcincecium had a length of 6 cm. and a breadth of 4-5 cm. The 

 largest polyps were in the contracted state about 1-5 cm. broad and 1 cm. high, the smallest colony 

 was 2 - 5 cm. long and 1-5 cm. broad. 



