42 CALYPTROPHORAD.E. 



the mouth of the cell and wide at the other end ; the lower sur- 

 face of the outer aperture is furnished with two elongated horn- 

 like processes. To the centre of this basal cone is articulated or 

 affixed a similar pellucid horn-coloured cone, or rather obconic vase, 

 which is furnished with a slightly keeled ridge at its widest part, 

 and then contracts, as if it had a shorter conical lid with an aper- 

 ture in the middle of this lid-like contracted part for the emission 

 of the polypes. The two cones are as it were articulated to the 

 stem ; and the lower cone stands at right angles with regard to it, 

 and the upper at right angles with regard to the lower one, so that 

 the aperture of the upper one is vertical. 



65. CALYPTROPHORA. 



Characters of the family. 

 Calyptrophora, Gray, P. Z. 8. 1866, p. 25. 



141. Calyptrophora japonica. B.M. 

 Calyptrophora japonica, Gray, P. Z. S. 1866, p. 25. f. 1. 



Hob. Japan. 



The cones are only preserved on the inner side of the branches, 

 where they have been protected from erosion, during the voyage from 

 Japan, by the branches opposite to them. 



142. Calyptrophora trilepis. 



"Branches irregularly and sparsely dichotomous, subflabellate. 

 Branchlets very thin and flexible. Calycles in verticils of four, or 

 more generally five, formed of three large cylindrical scales, joined 

 angularly to each other, like the elbows of a stove-pipe. Aperture 

 closed by eight triangular scales. The distance between the verticils 

 is equal to or a little less than the length of the single polypes. The 

 ccenenchyma is very thin, and covered with irregular imbricated 

 scales. Axis hard and brittle, brown in the thicker branches, and 

 yellow in the younger. By its simplified scales, this species makes an 

 approach to the genus Calyptrophora, Gray." 



Primnoa trilepis, Pourtales, Bull Mm. Comp. Zool 1868, p. 130. 



A few small branches, 5 or 6 inches long, were obtained in 

 324 fathoms, off the Florida Reef. 



